diff --git a/CHANGELOG/CHANGELOG-3.8.md b/CHANGELOG/CHANGELOG-3.8.md
index 9ae41e6a3..bdec996d9 100644
--- a/CHANGELOG/CHANGELOG-3.8.md
+++ b/CHANGELOG/CHANGELOG-3.8.md
@@ -1,70 +1,285 @@
-## [v3.8.3-patch.6](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.6) 	(2025-07-23)
-
-### Bug Fixes
-* fix: Add friend DB in notification sender [#3438](https://github.com/openimsdk/open-im-server/pull/3438)
-* fix: remove update version file workflows have new line in 3.8.3-patch branch. [#3452](https://github.com/openimsdk/open-im-server/pull/3452)
-* fix: s3 aws init [#3454](https://github.com/openimsdk/open-im-server/pull/3454)
-* fix: use safe submodule init in workflows in v3.8.3-patch. [#3469](https://github.com/openimsdk/open-im-server/pull/3469)
-
-**Full Changelog**: [v3.8.3-patch.5...v3.8.3-patch.6](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.5...v3.8.3-patch.6)
-
-## [v3.8.3-patch.5](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.5) 	(2025-06-10)
+## [v3.8.3-patch.16](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.16) 	(2026-03-19)
 
 ### New Features
-* feat: optimize friend and group applications [#3396](https://github.com/openimsdk/open-im-server/pull/3396)
+* feat: provide the interface required [#2712](https://github.com/openimsdk/open-im-server/pull/2712)
+* feat: add webhooks of online status and remove zookeeper configuration. [#2716](https://github.com/openimsdk/open-im-server/pull/2716)
+* feat: Add More Multi Login Policy [#2770](https://github.com/openimsdk/open-im-server/pull/2770)
+* feat: Push configuration can ignore case sensitivity [#2775](https://github.com/openimsdk/open-im-server/pull/2775)
+* feat: support app update service [#2794](https://github.com/openimsdk/open-im-server/pull/2794)
+* feat: implement merge milestone PR to target-branch. [#2796](https://github.com/openimsdk/open-im-server/pull/2796)
+* feat: support app update service [#2811](https://github.com/openimsdk/open-im-server/pull/2811)
+* feat: ApplicationVersion move chat [#2813](https://github.com/openimsdk/open-im-server/pull/2813)
+* feat: Update login policy [#2822](https://github.com/openimsdk/open-im-server/pull/2822)
+* feat: support stream message [#2824](https://github.com/openimsdk/open-im-server/pull/2824)
+* feat: merge js sdk [#2856](https://github.com/openimsdk/open-im-server/pull/2856)
+* feat: Print Panic Log [#2850](https://github.com/openimsdk/open-im-server/pull/2850)
+* feat: seq user and conversation seq synchronization [#2924](https://github.com/openimsdk/open-im-server/pull/2924)
+* feat: support aws [#2938](https://github.com/openimsdk/open-im-server/pull/2938)
+* feat: Prometheus can auto set port [#2943](https://github.com/openimsdk/open-im-server/pull/2943)
+* feat: Change upload logs systemType to AppFramework. [#2927](https://github.com/openimsdk/open-im-server/pull/2927)
+* feat: support quote ContentType in SendMsg. [#2819](https://github.com/openimsdk/open-im-server/pull/2819)
+* feat: Group Monitoring Components, Enable Host Mode && Deprecate reliabilityLevel and unreadCount in notification.yml [#2975](https://github.com/openimsdk/open-im-server/pull/2975)
+* feat: Add node_exporter in docker-compose [#2979](https://github.com/openimsdk/open-im-server/pull/2979)
+* feat: Optimize Scheduled Task [#2985](https://github.com/openimsdk/open-im-server/pull/2985)
+* feat: Optimizing RPC call [#2993](https://github.com/openimsdk/open-im-server/pull/2993)
+* feat: optimize error stack information [#2995](https://github.com/openimsdk/open-im-server/pull/2995)
+* feat: config center [#2997](https://github.com/openimsdk/open-im-server/pull/2997)
+* feat: support message cache [#3007](https://github.com/openimsdk/open-im-server/pull/3007)
+* feat: optimize log output [#3026](https://github.com/openimsdk/open-im-server/pull/3026)
+* feat: support GetLastMessage [#3029](https://github.com/openimsdk/open-im-server/pull/3029)
+* feat: Add enable config center button &&  fix: grpc connection leakage [#3036](https://github.com/openimsdk/open-im-server/pull/3036)
+* feat: change appNotificationAccount to appManagerAccount && fix: enable config center add env check && fix: error return [#3038](https://github.com/openimsdk/open-im-server/pull/3038)
+* feat: SendBusinessNotification supported configuration parameters [#3048](https://github.com/openimsdk/open-im-server/pull/3048)
+* feat: add backup volume && optimize log print [#3066](https://github.com/openimsdk/open-im-server/pull/3066)
+* feat: optimize code and support running in single process mode [#3142](https://github.com/openimsdk/open-im-server/pull/3142)
+* feat: Change after webhook filter && feat SendSimpleMsg [#3151](https://github.com/openimsdk/open-im-server/pull/3151)
+* feat: the default notification.yml is not configured properly [#3168](https://github.com/openimsdk/open-im-server/pull/3168)
+* feat: add a new message type: Markdown text [#3162](https://github.com/openimsdk/open-im-server/pull/3162)
+* feat: add a field to specify whether to send a notification message w… [#3163](https://github.com/openimsdk/open-im-server/pull/3163)
+* feat: optimizing BatchGetIncrementalGroupMember [#3180](https://github.com/openimsdk/open-im-server/pull/3180)
+* feat: system account send msg doesn't need friend verify [#3187](https://github.com/openimsdk/open-im-server/pull/3187)
+* feat: sending messages supports returning fields modified [#3192](https://github.com/openimsdk/open-im-server/pull/3192)
+* feat: set configs api [#3183](https://github.com/openimsdk/open-im-server/pull/3183)
+* feat: check if the secret in config/share.yml has been changed during registration [#3223](https://github.com/openimsdk/open-im-server/pull/3223)
+* feat: Implement webhook in createConversation [#3228](https://github.com/openimsdk/open-im-server/pull/3228)
+* feat: add a function for business info change to update related conve… [#3225](https://github.com/openimsdk/open-im-server/pull/3225)
+* feat: add filtering for invalid messages and invalid conversations to… [#3239](https://github.com/openimsdk/open-im-server/pull/3239)
+* feat: implement stress-test tools. [#3261](https://github.com/openimsdk/open-im-server/pull/3261)
+* feat: support server-issued configuration, which can be set for individual users [#3271](https://github.com/openimsdk/open-im-server/pull/3271)
+* feat: GetConversationsHasReadAndMaxSeq support pinned [#3281](https://github.com/openimsdk/open-im-server/pull/3281)
+* feat: Implement stress test v2. [#3292](https://github.com/openimsdk/open-im-server/pull/3292)
+* feat: GroupApplicationAgreeMemberEnterNotification splitting [#3297](https://github.com/openimsdk/open-im-server/pull/3297)
+* feat: optimize server code [#3319](https://github.com/openimsdk/open-im-server/pull/3319)
+* feat: add rpc interface permission check [#3366](https://github.com/openimsdk/open-im-server/pull/3366)
+* feat: optimize friend and group applications [#3384](https://github.com/openimsdk/open-im-server/pull/3384)
+* feat: support distributed lock in crontask. [#3401](https://github.com/openimsdk/open-im-server/pull/3401)
+* feat: Implement etcd and kafka auth. [#3394](https://github.com/openimsdk/open-im-server/pull/3394)
+* feat: support redis sentinel. [#3423](https://github.com/openimsdk/open-im-server/pull/3423)
+* feat: add api logger [#3427](https://github.com/openimsdk/open-im-server/pull/3427)
+* feat: add nickname for adminUser [#3435](https://github.com/openimsdk/open-im-server/pull/3435)
+* feat: support mongo replicaset mode. [#3433](https://github.com/openimsdk/open-im-server/pull/3433)
+* feat: enable redis aof-use-rdb-preamble && disable auto rdb [#3529](https://github.com/openimsdk/open-im-server/pull/3529)
+* feat: implement auth local cache. [#3533](https://github.com/openimsdk/open-im-server/pull/3533)
+* feat: add msgDBSave webhook when data save to DB. [#3578](https://github.com/openimsdk/open-im-server/pull/3578)
+* feat: implement DeleteConversations interface. [#3549](https://github.com/openimsdk/open-im-server/pull/3549)
+* feat: replace LongConn with ClientConn interface and simplify message handling [#3643](https://github.com/openimsdk/open-im-server/pull/3643)
+* feat: add error code for handled friend requests and improve error handling in friend operations [#3670](https://github.com/openimsdk/open-im-server/pull/3670)
+* feat: update protocol support botPlatform [#3696](https://github.com/openimsdk/open-im-server/pull/3696)
+* feat: gomake upgrade [#3702](https://github.com/openimsdk/open-im-server/pull/3702)
 
 ### Bug Fixes
-* fix: solve unocrrect invite notification [Created [#3219](https://github.com/openimsdk/open-im-server/pull/3219)
+* fix: the message I sent is not set to read seq in mongodb [#2718](https://github.com/openimsdk/open-im-server/pull/2718)
+* fix: cannot modify group member avatars [#2719](https://github.com/openimsdk/open-im-server/pull/2719)
+* fix: auth package import twice [#2724](https://github.com/openimsdk/open-im-server/pull/2724)
+* fix: join the group chat directly, notification type error [#2772](https://github.com/openimsdk/open-im-server/pull/2772)
+* fix: change update group member level logic [#2730](https://github.com/openimsdk/open-im-server/pull/2730)
+* fix: joinSource check args error. [#2773](https://github.com/openimsdk/open-im-server/pull/2773)
+* fix: Change group member roleLevel can`t send notification [#2777](https://github.com/openimsdk/open-im-server/pull/2777)
+* fix: client sends message status error to server [#2779](https://github.com/openimsdk/open-im-server/pull/2779)
+* fix: del UserB's conversation version cache when userA set conversati… [#2785](https://github.com/openimsdk/open-im-server/pull/2785)
+* fix: improve setConversationAtInfo logic. [#2782](https://github.com/openimsdk/open-im-server/pull/2782)
+* fix: improve transfer Owner logic when newOwner is mute. [#2790](https://github.com/openimsdk/open-im-server/pull/2790)
+* fix: improve getUserInfo logic. [#2792](https://github.com/openimsdk/open-im-server/pull/2792)
+* fix: improve time condition check mehtod. [#2804](https://github.com/openimsdk/open-im-server/pull/2804)
+* fix: webhook before online push [#2805](https://github.com/openimsdk/open-im-server/pull/2805)
+* fix: set own read seq in MongoDB when sender send a message. [#2808](https://github.com/openimsdk/open-im-server/pull/2808)
+* fix: solve err Notification when setGroupInfo. [#2806](https://github.com/openimsdk/open-im-server/pull/2806)
+* fix: improve condition check. [#2815](https://github.com/openimsdk/open-im-server/pull/2815)
+* fix: Write back message to Redis [#2836](https://github.com/openimsdk/open-im-server/pull/2836)
+* fix: get group return repeated result [#2842](https://github.com/openimsdk/open-im-server/pull/2842)
+* fix: SetConversations can update new conversation [#2838](https://github.com/openimsdk/open-im-server/pull/2838)
+* fix(push): push content with jpush [#2844](https://github.com/openimsdk/open-im-server/pull/2844)
+* fix #2860 migrate jpns to jpush [#2861](https://github.com/openimsdk/open-im-server/pull/2861)
+* fix: concurrent write to websocket connection [#2866](https://github.com/openimsdk/open-im-server/pull/2866)
+* fix: Remove admin token in redis [#2871](https://github.com/openimsdk/open-im-server/pull/2871)
+* Fix Push2User webhookBeforeOfflinePush [#2862](https://github.com/openimsdk/open-im-server/pull/2862)
+* fix: move workflow to correct path [#2837](https://github.com/openimsdk/open-im-server/pull/2837)
+* fix: del login Policy [#2825](https://github.com/openimsdk/open-im-server/pull/2825)
+* fix: Wrong Redis Error Check [#2876](https://github.com/openimsdk/open-im-server/pull/2876)
+* fix: minor log typo [#2881](https://github.com/openimsdk/open-im-server/pull/2881)
+* fix: webhookAfterSingleMsgRead will be called correctly [#2884](https://github.com/openimsdk/open-im-server/pull/2884)
+* fix: webhookBeforeSendSingleMsg will call before black and friend check [#2885](https://github.com/openimsdk/open-im-server/pull/2885)
+* fix: Wrong Redis Error Check [#2891](https://github.com/openimsdk/open-im-server/pull/2891)
+* fix: improve crontask delete outdated Data. [#2901](https://github.com/openimsdk/open-im-server/pull/2901)
+* fix: go mod [#2906](https://github.com/openimsdk/open-im-server/pull/2906)
+* fix: group member update face_url [#2910](https://github.com/openimsdk/open-im-server/pull/2910)
+* fix: update set seq implement. [#2911](https://github.com/openimsdk/open-im-server/pull/2911)
+* fix https://github.com/openimsdk/open-im-server/issues/2895 [#2896](https://github.com/openimsdk/open-im-server/pull/2896)
+* fix:  Can choose whether to set the port. [#2929](https://github.com/openimsdk/open-im-server/pull/2929)
+* fix: Configure move service discovery into discovery [#2934](https://github.com/openimsdk/open-im-server/pull/2934)
+* fix: compilation failed under Windows [#2940](https://github.com/openimsdk/open-im-server/pull/2940)
+* fix: server can return isEnd to control fetch messages when sdk pull … [#2949](https://github.com/openimsdk/open-im-server/pull/2949)
+* fix:Only print panic function frame && feat: log.ZPanic [#2947](https://github.com/openimsdk/open-im-server/pull/2947)
+* fix: seq user and conversation seq synchronization [#2958](https://github.com/openimsdk/open-im-server/pull/2958)
+* fix: fetch message return isEnd and endSeq panic. [#2959](https://github.com/openimsdk/open-im-server/pull/2959)
+* fix: rpc panic recover [#2957](https://github.com/openimsdk/open-im-server/pull/2957)
+* fix: modifying other fields while setting IsPrivateChat does not take effect [#2972](https://github.com/openimsdk/open-im-server/pull/2972)
+* fix: when fetching a referenced message, it indicates that the original message has been deleted. [#2977](https://github.com/openimsdk/open-im-server/pull/2977)
+* fix: when unable EnableHistoryForNewMembers, new group member can read last one message. [#3001](https://github.com/openimsdk/open-im-server/pull/3001)
+* fix: redis save error when KickTokens [#3002](https://github.com/openimsdk/open-im-server/pull/3002)
+* fix: The message @ information will be set only for members in the gr… [#3009](https://github.com/openimsdk/open-im-server/pull/3009)
+* fix: restart permission check [#3011](https://github.com/openimsdk/open-im-server/pull/3011)
+* fix: The system cannot be restarted the first time the configuration is set. [#3013](https://github.com/openimsdk/open-im-server/pull/3013)
+* fix: jssdk not init [#3016](https://github.com/openimsdk/open-im-server/pull/3016)
+* fix: online status error [#3022](https://github.com/openimsdk/open-im-server/pull/3022)
+* fix: GetUsersOnline returns an error in the online list [#3040](https://github.com/openimsdk/open-im-server/pull/3040)
+* fix: seq conversion failed without exiting [#3052](https://github.com/openimsdk/open-im-server/pull/3052)
+* fix: check error in BatchSetTokenMapByUidPid [#3076](https://github.com/openimsdk/open-im-server/pull/3076)
+* fix: DeleteDoc crash [#3078](https://github.com/openimsdk/open-im-server/pull/3078)
+* fix: the abnormal message has no sending time, causing the SDK to be abnormal [#3087](https://github.com/openimsdk/open-im-server/pull/3087)
+* fix: crash caused [#3100](https://github.com/openimsdk/open-im-server/pull/3100)
+* fix: the user sets the conversation timer cleanup timestamp unit incorrectly [#3102](https://github.com/openimsdk/open-im-server/pull/3102)
+* fix: solve workflows stop when merge failed [#3106](https://github.com/openimsdk/open-im-server/pull/3106)
+* fix: seq conversion not reading env in docker environment [#3130](https://github.com/openimsdk/open-im-server/pull/3130)
+* fix: the source message of the reference is withdrawn, and the referenced message is deleted [#3137](https://github.com/openimsdk/open-im-server/pull/3137)
+* fix: Offline push does not have a badge && Android offline push [#3146](https://github.com/openimsdk/open-im-server/pull/3146)
+* fix: PCAndOther multi login policy can`t get old clients correctly [#3158](https://github.com/openimsdk/open-im-server/pull/3158)
+* fix: solve uncorrect notification when set group info [#3172](https://github.com/openimsdk/open-im-server/pull/3172)
+* fix: the sorting is wrong after canceling the administrator in group settings [#3185](https://github.com/openimsdk/open-im-server/pull/3185)
+* fix: solve uncorrect GroupMember enter group notification type. [#3188](https://github.com/openimsdk/open-im-server/pull/3188)
+* fix: solve unocrrect invite notification [#3213](https://github.com/openimsdk/open-im-server/pull/3213)
+* fix: AdminToken save to redis && limit 1 for each userID [#3224](https://github.com/openimsdk/open-im-server/pull/3224)
+* fix: improve stress test tools parms. [#3265](https://github.com/openimsdk/open-im-server/pull/3265)
+* fix: oss specifies content-type when uploading [#3267](https://github.com/openimsdk/open-im-server/pull/3267)
+* fix: transferring the group owner to a muted member, incremental version error [#3284](https://github.com/openimsdk/open-im-server/pull/3284)
+* fix: group status in GroupDismissedNotification [#3286](https://github.com/openimsdk/open-im-server/pull/3286)
+* fix: data version SetVersion will add record [#3304](https://github.com/openimsdk/open-im-server/pull/3304)
+* fix: delete token [#3313](https://github.com/openimsdk/open-im-server/pull/3313)
+* fix: optimize grpc option and fix some interface permission checks [#3327](https://github.com/openimsdk/open-im-server/pull/3327)
+* fix: standalone mode cannot be used [#3360](https://github.com/openimsdk/open-im-server/pull/3360)
+* fix: solve user not found when notification invitedUserID is zero in … [#3375](https://github.com/openimsdk/open-im-server/pull/3375)
+* fix: send simple msg [#3362](https://github.com/openimsdk/open-im-server/pull/3362)
+* fix: solve updateUserInfoEx null pointer. [#3326](https://github.com/openimsdk/open-im-server/pull/3326)
+* fix: add rpc interface permission check [#3377](https://github.com/openimsdk/open-im-server/pull/3377)
+* fix: optimize friend and group applications [#3389](https://github.com/openimsdk/open-im-server/pull/3389)
+* fix redis config db field [#3395](https://github.com/openimsdk/open-im-server/pull/3395)
+* fix: prometheus discovery [#3408](https://github.com/openimsdk/open-im-server/pull/3408)
+* fix: import friends send notification [#3420](https://github.com/openimsdk/open-im-server/pull/3420)
+* fix: improve mileston PR workflows contents. [#3382](https://github.com/openimsdk/open-im-server/pull/3382)
+* fix: solve webhook incorrect attentionID references. [#3411](https://github.com/openimsdk/open-im-server/pull/3411)
+* fix: solve `createTime` not set in setConversation and Create Conversation. [#3447](https://github.com/openimsdk/open-im-server/pull/3447)
+* fix: update log level in crontask dist look. [#3440](https://github.com/openimsdk/open-im-server/pull/3440)
+* fix: use safe submodule init in workflows. [#3468](https://github.com/openimsdk/open-im-server/pull/3468)
+* fix: fix incorrect kicked logic. [#3480](https://github.com/openimsdk/open-im-server/pull/3480)
+* fix: added AtUserIDList to the @ message for API sending. [#3472](https://github.com/openimsdk/open-im-server/pull/3472)
+* fix: solve batch incorrect error in Find DocIDs [#3476](https://github.com/openimsdk/open-im-server/pull/3476)
+* fix: correctly aggregate read seqs [#3442](https://github.com/openimsdk/open-im-server/pull/3442)
+* fix: performance issues with Kafka caused [#3485](https://github.com/openimsdk/open-im-server/pull/3485)
+* fix: searchMessage method has potential NPE bug [Created [#3289](https://github.com/openimsdk/open-im-server/pull/3289)
+* fix: admin token in standalone mode [#3499](https://github.com/openimsdk/open-im-server/pull/3499)
+* fix: revert contentType in API msg [#3509](https://github.com/openimsdk/open-im-server/pull/3509)
+* fix: optimize to lru  local cache. [#3514](https://github.com/openimsdk/open-im-server/pull/3514)
+* fix: fill in the most recent sendTime for a gap message to prevent th… [#3522](https://github.com/openimsdk/open-im-server/pull/3522)
+* fix: solve incorrect batchGetIncrGroupMember when group dismissed. [#3526](https://github.com/openimsdk/open-im-server/pull/3526)
+* fix: GetSortedConversationList nil pointer when chatlog not found. [#3531](https://github.com/openimsdk/open-im-server/pull/3531)
+* fix: switch kafka & etcd image namespace to bitnamilegacy [#3555](https://github.com/openimsdk/open-im-server/pull/3555)
+* fix: solve incorrect time.Unix and logger asyncwrite [#3584](https://github.com/openimsdk/open-im-server/pull/3584)
+* fix: db manager [#3600](https://github.com/openimsdk/open-im-server/pull/3600)
+* fix: update JSON field names to camelCase in conversation structs [#3609](https://github.com/openimsdk/open-im-server/pull/3609)
+* Fix: Resolved the issue of incorrect generation of conversationID [#3581](https://github.com/openimsdk/open-im-server/pull/3581)
+* fix: solve msg wsHandler panic. [#3595](https://github.com/openimsdk/open-im-server/pull/3595)
+* fix: resolve deadlock in cache eviction and improve GetBatch implementation and full id version [#3591](https://github.com/openimsdk/open-im-server/pull/3591)
+* fix: reset user conversation seq when rejoining group to resolve message recall issue [#3640](https://github.com/openimsdk/open-im-server/pull/3640)
+* fix(group): move member count retrieval after member deletion for accurate updates [#3651](https://github.com/openimsdk/open-im-server/pull/3651)
+* fix(group): set max_seq to 0 when join group [#3649](https://github.com/openimsdk/open-im-server/pull/3649)
+* fix: Mongo Malloc upsert overwrites min_seq initialization [#3657](https://github.com/openimsdk/open-im-server/pull/3657)
+
+### Chores
+* chore: remove unused content [#2786](https://github.com/openimsdk/open-im-server/pull/2786)
+* chore: update admin front image version [#2893](https://github.com/openimsdk/open-im-server/pull/2893)
+
+### Refactors
+* refactor: Refactor rpc call && auto gen rpc_call code [#2969](https://github.com/openimsdk/open-im-server/pull/2969)
+* refactor: improve workflows logic. [#3072](https://github.com/openimsdk/open-im-server/pull/3072)
+* refactor: change sendNotification to sendMessage to avoid ambiguity regarding message sending behavior. [#3173](https://github.com/openimsdk/open-im-server/pull/3173)
+* refactor: improve setConversations method. [#3194](https://github.com/openimsdk/open-im-server/pull/3194)
+* refactor: move stress-test tools location. [#3295](https://github.com/openimsdk/open-im-server/pull/3295)
+* refactor: support modified config and args in mage. [#3466](https://github.com/openimsdk/open-im-server/pull/3466)
 
 ### Builds
-* build: update gomake version in dockerfile.[Patch branch] [#3416](https://github.com/openimsdk/open-im-server/pull/3416)
+* build: improve workflows logic. [#2801](https://github.com/openimsdk/open-im-server/pull/2801)
+* build: implement version file update when release. [#2826](https://github.com/openimsdk/open-im-server/pull/2826)
+* build: update mongo and kafka start logic. [#2858](https://github.com/openimsdk/open-im-server/pull/2858)
+* build: create changelog tool and workflows. [#2869](https://github.com/openimsdk/open-im-server/pull/2869)
+* build(deps): bump github.com/golang-jwt/jwt/v4 from 4.5.0 to 4.5.1 [#2851](https://github.com/openimsdk/open-im-server/pull/2851)
+* build: update Server version. [#2887](https://github.com/openimsdk/open-im-server/pull/2887)
+* build: implement services image build and CI release. [#2920](https://github.com/openimsdk/open-im-server/pull/2920)
+* build: update kubernetes deployment Run. [#2919](https://github.com/openimsdk/open-im-server/pull/2919)
+* build: fix uncorrect path. [#3020](https://github.com/openimsdk/open-im-server/pull/3020)
+* build: fix docker images build. [#3024](https://github.com/openimsdk/open-im-server/pull/3024)
+* build: keep conflict is true. [#3103](https://github.com/openimsdk/open-im-server/pull/3103)
+* build: comment out admin services. [#3537](https://github.com/openimsdk/open-im-server/pull/3537)
+* build: improve publish docker image workflow. [#3552](https://github.com/openimsdk/open-im-server/pull/3552)
+* build: add sdk version log in registerClient [#3574](https://github.com/openimsdk/open-im-server/pull/3574)
+
+### Others
+* Revert: Change group member roleLevel can`t send notification [#2789](https://github.com/openimsdk/open-im-server/pull/2789)
+* Introducing OpenIM Guru on Gurubase.io [#2788](https://github.com/openimsdk/open-im-server/pull/2788)
+* revert: write msg to redis [#2883](https://github.com/openimsdk/open-im-server/pull/2883)
+* Add a lead time for the token's issuance time. [#2914](https://github.com/openimsdk/open-im-server/pull/2914)
+* docs: improve deployment docs in kubernetes. [#2973](https://github.com/openimsdk/open-im-server/pull/2973)
+* update: env image version [#3055](https://github.com/openimsdk/open-im-server/pull/3055)
+* License [#3293](https://github.com/openimsdk/open-im-server/pull/3293)
+* docs: update slack link. [#3479](https://github.com/openimsdk/open-im-server/pull/3479)
+* Update CHANGELOG for release v3.8.3-patch.1 [#3164](https://github.com/openimsdk/open-im-server/pull/3164)
+* Update CHANGELOG for release v3.8.3-patch.2 [#3175](https://github.com/openimsdk/open-im-server/pull/3175)
+* Update CHANGELOG for release v3.8.3-patch.3 [#3206](https://github.com/openimsdk/open-im-server/pull/3206)
+* Update CHANGELOG for release v3.8.3-patch.4 [#3226](https://github.com/openimsdk/open-im-server/pull/3226)
+* Update CHANGELOG for release v3.8.3-patch.5 [#3405](https://github.com/openimsdk/open-im-server/pull/3405)
+* Update CHANGELOG for release v3.8.3-patch.6 [#3473](https://github.com/openimsdk/open-im-server/pull/3473)
+* docs: update readme of config file. [#3356](https://github.com/openimsdk/open-im-server/pull/3356)
+* ​Build: Implement rate limiting and circuit breaker for API and RPC services.​​ [#3572](https://github.com/openimsdk/open-im-server/pull/3572)
+* merge: pre-release-v3.8.4 [#3623](https://github.com/openimsdk/open-im-server/pull/3623)
+* Simplify iOS background push gating (#3611) [#3612](https://github.com/openimsdk/open-im-server/pull/3612)
+* bugfix(conversation):removed unexpectedly called functions and itself… [#3668](https://github.com/openimsdk/open-im-server/pull/3668)
+* @lkzz made their first contribution in https://github.com/openimsdk/open-im-server/pull/2724
 [#2724](https://github.com/openimsdk/open-im-server/pull/2724)
+* @alilestera made their first contribution in https://github.com/openimsdk/open-im-server/pull/2773
 [#2773](https://github.com/openimsdk/open-im-server/pull/2773)
+* @kursataktas made their first contribution in https://github.com/openimsdk/open-im-server/pull/2788
 [#2788](https://github.com/openimsdk/open-im-server/pull/2788)
+* @yoyo930021 made their first contribution in https://github.com/openimsdk/open-im-server/pull/2844
 [#2844](https://github.com/openimsdk/open-im-server/pull/2844)
+* @wikylyu made their first contribution in https://github.com/openimsdk/open-im-server/pull/2861
 [#2861](https://github.com/openimsdk/open-im-server/pull/2861)
+* @storyn26383 made their first contribution in https://github.com/openimsdk/open-im-server/pull/2862
 [#2862](https://github.com/openimsdk/open-im-server/pull/2862)
+* @morya made their first contribution in https://github.com/openimsdk/open-im-server/pull/2881
 [#2881](https://github.com/openimsdk/open-im-server/pull/2881)
+* @HonQii made their first contribution in https://github.com/openimsdk/open-im-server/pull/3395
 [#3395](https://github.com/openimsdk/open-im-server/pull/3395)
+* @github-actions[bot] made their first contribution in https://github.com/openimsdk/open-im-server/pull/3164
 [#3164](https://github.com/openimsdk/open-im-server/pull/3164)
+* @xuzhijvn made their first contribution in https://github.com/openimsdk/open-im-server/pull/3289
 [#3289](https://github.com/openimsdk/open-im-server/pull/3289)
+* @ozudev made their first contribution in https://github.com/openimsdk/open-im-server/pull/3612
 [#3612](https://github.com/openimsdk/open-im-server/pull/3612)
 
-**Full Changelog**: [v3.8.3...v3.8.3-patch.5](https://github.com/openimsdk/open-im-server/compare/v3.8.3...v3.8.3-patch.5)
+**Full Changelog**: [v3.8.3-patch.15...v3.8.3-patch.16](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.15...v3.8.3-patch.16)
 
-## [v3.8.3-patch.4](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.4) 	(2025-03-13)
+## [v3.8.3-patch.12](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.12) 	(2025-10-24)
 
 ### Bug Fixes
-* fix: solve unocrrect invite notificationfrom #3213
+* fix: full id version [#3589](https://github.com/openimsdk/open-im-server/pull/3589)
+* fix: incorrect redis fields. [#3602](https://github.com/openimsdk/open-im-server/pull/3602)
 
-**Full Changelog**: [v3.8.3-patch.3...v3.8.3-patch.4](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.3...v3.8.3-patch.4)
+**Full Changelog**: [v3.8.3-patch.11...v3.8.3-patch.12](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.11...v3.8.3-patch.12)
 
-## [v3.8.3-patch.3](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.3) 	(2025-03-07)
+## [v3.8.3-patch.9](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.9) 	(2025-08-19)
 
 ### New Features
-* feat: optimizing BatchGetIncrementalGroupMember #3180
+* feat: enable redis aof-use-rdb-preamble && disable auto rdb [Created [#3535](https://github.com/openimsdk/open-im-server/pull/3535)
 
 ### Bug Fixes
-* fix: solve uncorrect notification when set group info #3172
-* fix: the sorting is wrong after canceling the administrator in group settings #3185
-* fix: solve uncorrect GroupMember enter group notification type. #3188
-
-### Refactors
-* refactor: change sendNotification to sendMessage to avoid ambiguity regarding message sending behavior. #3173
+* fix: fill in the most recent sendTime for a gap message to prevent th… [#3523](https://github.com/openimsdk/open-im-server/pull/3523)
 
-**Full Changelog**: [v3.8.3-patch.2...v3.8.3-patch.3](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.2...v3.8.3-patch.3)
+**Full Changelog**: [v3.8.3-patch.8...v3.8.3-patch.9](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.8...v3.8.3-patch.9)
 
-## [v3.8.3-patch.2](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.2) 	(2025-02-28)
+## [v3.8.3-patch.8](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.8) 	(2025-08-13)
 
 ### Bug Fixes
-* fix: Offline push does not have a badge && Android offline push (#3146) [#3174](https://github.com/openimsdk/open-im-server/pull/3174)
+* fix: fix incorrect kicked logic and PCAndOther Login policy In v3.8.3-patch [#3511](https://github.com/openimsdk/open-im-server/pull/3511)
+* fix: solve batch incorrect error in Find DocIDs in v3.8.3-patch branch. [#3515](https://github.com/openimsdk/open-im-server/pull/3515)
 
-**Full Changelog**: [v3.8.3-patch.1...v3.8.3-patch.2](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.1...v3.8.3-patch.2)
+**Full Changelog**: [v3.8.3-patch.7...v3.8.3-patch.8](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.7...v3.8.3-patch.8)
 
-## [v3.8.3-patch.1](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.1) 	(2025-02-25)
+## [v3.8.3-patch.7](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.7) 	(2025-07-29)
 
 ### New Features
-* feat: add backup volume && optimize log print [Created [#3121](https://github.com/openimsdk/open-im-server/pull/3121)
+* feat: add filtering for invalid messages and invalid conversations to… [#3483](https://github.com/openimsdk/open-im-server/pull/3483)
 
 ### Bug Fixes
-* fix: seq conversion failed without exiting [Created [#3120](https://github.com/openimsdk/open-im-server/pull/3120)
-* fix: check error in BatchSetTokenMapByUidPid [Created [#3123](https://github.com/openimsdk/open-im-server/pull/3123)
-* fix: DeleteDoc crash [Created [#3124](https://github.com/openimsdk/open-im-server/pull/3124)
-* fix: the abnormal message has no sending time, causing the SDK to be abnormal [Created [#3126](https://github.com/openimsdk/open-im-server/pull/3126)
-* fix: crash caused [#3127](https://github.com/openimsdk/open-im-server/pull/3127)
-* fix: the user sets the conversation timer cleanup timestamp unit incorrectly [Created [#3128](https://github.com/openimsdk/open-im-server/pull/3128)
-* fix: seq conversion not reading env in docker environment [Created [#3131](https://github.com/openimsdk/open-im-server/pull/3131)
-
-### Builds
-* build: improve workflows contents. [Created [#3125](https://github.com/openimsdk/open-im-server/pull/3125)
+* fix: correctly aggregate read seqs [#3482](https://github.com/openimsdk/open-im-server/pull/3482)
+* fix: import friends send notification in v3.8.3-patch [#3488](https://github.com/openimsdk/open-im-server/pull/3488)
+* fix: solve redis config db field in v3.8.3-patch [#3490](https://github.com/openimsdk/open-im-server/pull/3490)
 
-**Full Changelog**: [v3.8.3-e-v1.1.5...v3.8.3-patch.1-e-v1.1.5](https://github.com/openimsdk/open-im-server-enterprise/compare/v3.8.3-e-v1.1.5...v3.8.3-patch.1-e-v1.1.5)
\ No newline at end of file
+**Full Changelog**: [v3.8.3-patch.6...v3.8.3-patch.7](https://github.com/openimsdk/open-im-server/compare/v3.8.3-patch.6...v3.8.3-patch.7)
diff --git a/config/alertmanager.yml b/config/alertmanager.yml
index 6c675ab6f..0f4d9875f 100644
--- a/config/alertmanager.yml
+++ b/config/alertmanager.yml
@@ -1,34 +1,36 @@
+# Global Alertmanager runtime and SMTP settings.
 global:
-  resolve_timeout: 5m
-  smtp_from: alert@openim.io
-  smtp_smarthost: smtp.163.com:465
-  smtp_auth_username: alert@openim.io
-  smtp_auth_password: YOURAUTHPASSWORD
-  smtp_require_tls: false
-  smtp_hello: xxx
+  resolve_timeout: 5m # Wait time before an alert is considered resolved when no further updates are received.
+  smtp_from: alert@openim.io # Sender address displayed in alert emails.
+  smtp_smarthost: smtp.163.com:465 # SMTP relay endpoint in host:port format.
+  smtp_auth_username: alert@openim.io # SMTP authentication username (commonly the same as smtp_from).
+  smtp_auth_password: YOURAUTHPASSWORD # SMTP authorization token or app password.
+  smtp_require_tls: false # Set to true when your SMTP provider requires STARTTLS.
+  smtp_hello: xxx # HELO/EHLO identity presented to the SMTP server.
 
 templates:
-  - /etc/alertmanager/email.tmpl
+  - /etc/alertmanager/email.tmpl # Go template file used to render HTML email content.
 
+# Root routing tree for all incoming alerts.
 route:
-  group_by: [ 'alertname' ]
-  group_wait: 5s
-  group_interval: 5s
-  repeat_interval: 5m
-  receiver: email
+  group_by: [ 'alertname' ] # Alerts sharing this label value are batched into one notification.
+  group_wait: 5s # Initial delay before sending the first notification for a new alert group.
+  group_interval: 5s # Minimum interval between notifications for the same alert group.
+  repeat_interval: 5m # Reminder interval while an alert group remains firing.
+  receiver: email # Default receiver when no child route matches.
   routes:
     - matchers:
-        - alertname = "XXX"
-      group_by: [ 'instance' ]
+        - alertname = "XXX" # Example matcher; replace with a real alert name or remove this route.
+      group_by: [ 'instance' ] # Override grouping for this specific route.
       group_wait: 5s
       group_interval: 5s
       repeat_interval: 5m
       receiver: email
 
 receivers:
-  - name: email
+  - name: email # Receiver name referenced by route.receiver.
     email_configs:
-      - to: 'alert@example.com'
-        html: '{{ template "email.to.html" . }}'
-        headers: { Subject: "[OPENIM-SERVER]Alarm" }
-        send_resolved: true
+      - to: 'alert@example.com' # Recipient mailbox for alert notifications.
+        html: '{{ template "email.to.html" . }}' # Rendered with the template declared in email.tmpl.
+        headers: { Subject: "[OPENIM-SERVER]Alarm" } # Custom email subject line.
+        send_resolved: true # Also send a notification when the alert recovers.
diff --git a/config/email.tmpl b/config/email.tmpl
index 824144e9d..ab9642e85 100644
--- a/config/email.tmpl
+++ b/config/email.tmpl
@@ -1,3 +1,6 @@
+{{/* OpenIM Alertmanager email template.
+This template renders both firing and resolved alerts.
+Each alert entry reads labels and annotations from Prometheus rule definitions. */}}
 {{ define "email.to.html" }}
 {{ if eq .Status "firing" }}
     {{ range .Alerts }}
diff --git a/config/instance-down-rules.yml b/config/instance-down-rules.yml
index bcac7ba60..60b26e33f 100644
--- a/config/instance-down-rules.yml
+++ b/config/instance-down-rules.yml
@@ -1,30 +1,31 @@
+# Default Prometheus alert groups for OpenIM.
 groups:
-  - name: instance_down
+  - name: instance_down # Fires when a monitored target remains unreachable.
     rules:
       - alert: InstanceDown
-        expr: up == 0
-        for: 1m
+        expr: up == 0 # The built-in "up" metric is 0 when the latest scrape fails.
+        for: 1m # Trigger only if the condition remains true for more than 1 minute.
         labels:
-          severity: critical
+          severity: critical # Used by Alertmanager for routing and notification priority.
         annotations:
           summary: "Instance {{ $labels.instance }} down"
-          description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes."
+          description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minute."
 
-  - name: database_insert_failure_alerts
+  - name: database_insert_failure_alerts # Detects failures when persisting messages to Redis or MongoDB.
     rules:
       - alert: DatabaseInsertFailed
-        expr: (increase(msg_insert_redis_failed_total[5m]) > 0) or (increase(msg_insert_mongo_failed_total[5m]) > 0)
-        for: 1m
+        expr: (increase(msg_insert_redis_failed_total[5m]) > 0) or (increase(msg_insert_mongo_failed_total[5m]) > 0) # Any positive increase indicates write failures occurred in the last 5 minutes.
+        for: 1m # Avoid firing on very short spikes.
         labels:
           severity: critical
         annotations:
           summary: "Increase in MsgInsertRedisFailedCounter or MsgInsertMongoFailedCounter detected"
-          description: "Either MsgInsertRedisFailedCounter or MsgInsertMongoFailedCounter has increased in the last 5 minutes, indicating failures in message insert operations to Redis or MongoDB,maybe the redis or mongodb is crash."
+          description: "Either MsgInsertRedisFailedCounter or MsgInsertMongoFailedCounter increased in the last 5 minutes, indicating message insert failures to Redis or MongoDB and a possible backend outage."
 
-  - name: registrations_few
+  - name: registrations_few # Operational early-warning rule for unusually low login/registration activity.
     rules:
       - alert: RegistrationsFew
-        expr: increase(user_login_total[1h]) == 0
+        expr: increase(user_login_total[1h]) == 0 # No successful login/registration events observed in 1 hour.
         for: 1m
         labels:
           severity: info
@@ -32,10 +33,10 @@ groups:
           summary: "Too few registrations within the time frame"
           description: "The number of registrations in the last hour is 0. There might be some issues."
 
-  - name: messages_few
+  - name: messages_few # Operational early-warning rule for unusually low messaging activity.
     rules:
       - alert: MessagesFew
-        expr: (increase(single_chat_msg_process_success_total[1h])+increase(group_chat_msg_process_success_total[1h])) == 0
+        expr: (increase(single_chat_msg_process_success_total[1h])+increase(group_chat_msg_process_success_total[1h])) == 0 # No successful single or group messages observed in 1 hour.
         for: 1m
         labels:
           severity: info
diff --git a/config/openim-api.yml b/config/openim-api.yml
index df0177d24..89be50123 100644
--- a/config/openim-api.yml
+++ b/config/openim-api.yml
@@ -8,7 +8,7 @@ api:
 
 
 prometheus:
-  # Whether to enable prometheus
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # autoSetPorts indicates whether to automatically set the ports
   autoSetPorts: true
diff --git a/config/openim-msggateway.yml b/config/openim-msggateway.yml
index 8ac07faae..7c2f17158 100644
--- a/config/openim-msggateway.yml
+++ b/config/openim-msggateway.yml
@@ -9,7 +9,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-msgtransfer.yml b/config/openim-msgtransfer.yml
index c6ea06803..972a378b7 100644
--- a/config/openim-msgtransfer.yml
+++ b/config/openim-msgtransfer.yml
@@ -1,5 +1,5 @@
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # autoSetPorts indicates whether to automatically set the ports
   autoSetPorts: true
diff --git a/config/openim-push.yml b/config/openim-push.yml
index 58784f13d..ab65a2eee 100644
--- a/config/openim-push.yml
+++ b/config/openim-push.yml
@@ -28,7 +28,7 @@ circuitBreaker:
   request: 500 # Request threshold; circuit breaker evaluation occurs when reached
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: false
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-auth.yml b/config/openim-rpc-auth.yml
index 09ceef0f4..e1c359120 100644
--- a/config/openim-rpc-auth.yml
+++ b/config/openim-rpc-auth.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-conversation.yml b/config/openim-rpc-conversation.yml
index 1135ffe6e..f07710ba7 100644
--- a/config/openim-rpc-conversation.yml
+++ b/config/openim-rpc-conversation.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-friend.yml b/config/openim-rpc-friend.yml
index 1135ffe6e..f07710ba7 100644
--- a/config/openim-rpc-friend.yml
+++ b/config/openim-rpc-friend.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-group.yml b/config/openim-rpc-group.yml
index 154b149e1..20ac70af2 100644
--- a/config/openim-rpc-group.yml
+++ b/config/openim-rpc-group.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-msg.yml b/config/openim-rpc-msg.yml
index e05eeb7e4..d3fadb941 100644
--- a/config/openim-rpc-msg.yml
+++ b/config/openim-rpc-msg.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-third.yml b/config/openim-rpc-third.yml
index f6fbee695..29f05a027 100644
--- a/config/openim-rpc-third.yml
+++ b/config/openim-rpc-third.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Enable or disable Prometheus monitoring
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # List of ports that Prometheus listens on; these must match the number of rpc.ports to ensure correct monitoring setup
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/openim-rpc-user.yml b/config/openim-rpc-user.yml
index c46db7f37..9b16b85ec 100644
--- a/config/openim-rpc-user.yml
+++ b/config/openim-rpc-user.yml
@@ -11,7 +11,7 @@ rpc:
   ports:
 
 prometheus:
-  # Whether to enable prometheus
+  # Enable Prometheus metrics exposure for this service; set to true to allow scraping.
   enable: true
   # Prometheus listening ports, must be consistent with the number of rpc.ports
   # It will only take effect when autoSetPorts is set to false.
diff --git a/config/prometheus.yml b/config/prometheus.yml
index 0b13326d1..68a9e7c45 100644
--- a/config/prometheus.yml
+++ b/config/prometheus.yml
@@ -1,35 +1,34 @@
-# my global config
+# Global Prometheus runtime settings.
 global:
   scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
   evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
-  # scrape_timeout is set to the global default (10s).
+  # scrape_timeout defaults to 10s unless overridden in a specific scrape job.
 
-# Alertmanager configuration
+# Alertmanager endpoints that receive alert events from Prometheus.
 alerting:
   alertmanagers:
     - static_configs:
-        - targets: [127.0.0.1:19093]
+        - targets: [127.0.0.1:19093] # Alertmanager address in host:port format.
 
-# Load rules once and periodically evaluate them according to the global evaluation_interval.
+# Rule files loaded by Prometheus.
 rule_files:
-  - instance-down-rules.yml
+  - instance-down-rules.yml # Default OpenIM alert rules; add more files here if needed.
 # - first_rules.yml
 # - second_rules.yml
 
-# A scrape configuration containing exactly one endpoint to scrape:
-# Here it's Prometheus itself.
+# Scrape jobs used to collect infrastructure and OpenIM service metrics.
 scrape_configs:
-  # The job name is added as a label "job=job_name" to any timeseries scraped from this config.
-  # Monitored information captured by prometheus
-
-  # prometheus fetches application services
+  # The job_name value is attached as the "job" label in collected time series.
   - job_name: node_exporter
     static_configs:
-      - targets: [ 127.0.0.1:19100 ]
+      - targets: [ 127.0.0.1:19100 ] # node_exporter endpoint for host CPU, memory, disk, and network metrics.
+
+  # OpenIM services are discovered dynamically from the admin API.
+  # For multi-host deployments, replace 127.0.0.1 with a reachable internal address.
 
   - job_name: openimserver-openim-api
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/api"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/api" # Service discovery endpoint for OpenIM API instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12002 ]
 #        labels:
@@ -37,7 +36,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-msggateway
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/msg_gateway"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/msg_gateway" # Service discovery endpoint for msggateway instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12140 ]
 #        #      - targets: [ 127.0.0.1:12140, 127.0.0.1:12141, 127.0.0.1:12142, 127.0.0.1:12143, 127.0.0.1:12144, 127.0.0.1:12145, 127.0.0.1:12146, 127.0.0.1:12147, 127.0.0.1:12148, 127.0.0.1:12149, 127.0.0.1:12150, 127.0.0.1:12151, 127.0.0.1:12152, 127.0.0.1:12153, 127.0.0.1:12154, 127.0.0.1:12155 ]
@@ -46,7 +45,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-msgtransfer
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/msg_transfer"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/msg_transfer" # Service discovery endpoint for msgtransfer instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12020, 127.0.0.1:12021, 127.0.0.1:12022, 127.0.0.1:12023, 127.0.0.1:12024, 127.0.0.1:12025, 127.0.0.1:12026, 127.0.0.1:12027 ]
 #        #      - targets: [ 127.0.0.1:12020, 127.0.0.1:12021, 127.0.0.1:12022, 127.0.0.1:12023, 127.0.0.1:12024, 127.0.0.1:12025, 127.0.0.1:12026, 127.0.0.1:12027, 127.0.0.1:12028, 127.0.0.1:12029, 127.0.0.1:12030, 127.0.0.1:12031, 127.0.0.1:12032, 127.0.0.1:12033, 127.0.0.1:12034, 127.0.0.1:12035 ]
@@ -55,7 +54,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-push
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/push"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/push" # Service discovery endpoint for push service instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12170, 127.0.0.1:12171, 127.0.0.1:12172, 127.0.0.1:12173, 127.0.0.1:12174, 127.0.0.1:12175, 127.0.0.1:12176, 127.0.0.1:12177 ]
 ##      - targets: [ 127.0.0.1:12170, 127.0.0.1:12171, 127.0.0.1:12172, 127.0.0.1:12173, 127.0.0.1:12174, 127.0.0.1:12175, 127.0.0.1:12176, 127.0.0.1:12177, 127.0.0.1:12178, 127.0.0.1:12179, 127.0.0.1:12180,  127.0.0.1:12182, 127.0.0.1:12183, 127.0.0.1:12184, 127.0.0.1:12185, 127.0.0.1:12186 ]
@@ -64,7 +63,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-auth
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/auth"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/auth" # Service discovery endpoint for auth RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12200 ]
 #        labels:
@@ -72,7 +71,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-conversation
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/conversation"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/conversation" # Service discovery endpoint for conversation RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12220 ]
 #        labels:
@@ -80,7 +79,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-friend
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/friend"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/friend" # Service discovery endpoint for friend RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12240 ]
 #        labels:
@@ -88,7 +87,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-group
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/group"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/group" # Service discovery endpoint for group RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12260 ]
 #        labels:
@@ -96,7 +95,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-msg
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/msg"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/msg" # Service discovery endpoint for msg RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12280 ]
 #        labels:
@@ -104,7 +103,7 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-third
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/third"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/third" # Service discovery endpoint for third-party RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12300 ]
 #        labels:
@@ -112,8 +111,8 @@ scrape_configs:
 
   - job_name: openimserver-openim-rpc-user
     http_sd_configs:
-      - url: "http://127.0.0.1:10002/prometheus_discovery/user"
+      - url: "http://127.0.0.1:10002/prometheus_discovery/user" # Service discovery endpoint for user RPC instances.
 #    static_configs:
 #      - targets: [ 127.0.0.1:12320 ]
 #        labels:
-#          namespace: default
\ No newline at end of file
+#          namespace: default
diff --git a/pkg/common/cmd/api.go b/pkg/common/cmd/api.go
index 1356f90d6..8ffce5177 100644
--- a/pkg/common/cmd/api.go
+++ b/pkg/common/cmd/api.go
@@ -92,7 +92,9 @@ func (a *ApiCmd) runE() error {
 		&a.apiConfig.Notification,
 		a.apiConfig,
 		[]string{},
-		[]string{},
+		[]string{
+			a.apiConfig.Discovery.RpcService.MessageGateway,
+		},
 		api.Start,
 	)
 }
diff --git a/pkg/common/storage/cache/redis/online.go b/pkg/common/storage/cache/redis/online.go
index c11473695..d09c44e9a 100644
--- a/pkg/common/storage/cache/redis/online.go
+++ b/pkg/common/storage/cache/redis/online.go
@@ -112,7 +112,7 @@ func (s *userOnline) SetUserOnline(ctx context.Context, userID string, online, o
 	end
 `
 	now := time.Now()
-	argv := make([]any, 0, 2+len(online)+len(offline))
+	argv := make([]any, 0, 4+len(online)+len(offline))
 	argv = append(argv, int32(s.expire/time.Second), now.Unix(), now.Add(s.expire).Unix(), int32(len(offline)))
 	for _, platformID := range offline {
 		argv = append(argv, platformID)
diff --git a/pkg/rpccache/online.go b/pkg/rpccache/online.go
index fb7f18393..fa6fc73d3 100644
--- a/pkg/rpccache/online.go
+++ b/pkg/rpccache/online.go
@@ -214,8 +214,6 @@ func (o *defaultOnlineCache) GetUserOnlinePlatform(ctx context.Context, userID s
 	if err != nil {
 		return nil, err
 	}
-	tmp := make([]int32, len(platformIDs))
-	copy(tmp, platformIDs)
 	return platformIDs, nil
 }
 
diff --git a/pkg/tools/batcher/batcher.go b/pkg/tools/batcher/batcher.go
index 93a31ed8f..bbaa2ca93 100644
--- a/pkg/tools/batcher/batcher.go
+++ b/pkg/tools/batcher/batcher.go
@@ -151,12 +151,21 @@ func (b *Batcher[T]) Put(ctx context.Context, data *T) error {
 
 func (b *Batcher[T]) scheduler() {
 	ticker := time.NewTicker(b.config.interval)
+	// Track whether b.data was closed by an external caller so the
+	// cleanup below does not close it a second time. The only routes
+	// out of this function that leave b.data open are the nil-message
+	// and ticker paths; the ok == false branch means someone already
+	// closed the channel, and calling close(b.data) again there would
+	// panic with "close of closed channel" (#3653).
+	externallyClosed := false
 	defer func() {
 		ticker.Stop()
 		for _, ch := range b.chArrays {
 			close(ch)
 		}
-		close(b.data)
+		if !externallyClosed {
+			close(b.data)
+		}
 		b.wait.Done()
 	}()
 
@@ -169,6 +178,7 @@ func (b *Batcher[T]) scheduler() {
 		case data, ok := <-b.data:
 			if !ok {
 				// If the data channel is closed unexpectedly
+				externallyClosed = true
 				return
 			}
 			if data == nil {