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<p align="center">
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<strong>ThreadPool, so easy.</strong>
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</p>
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<p align="center">
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<img src="https://img.shields.io/badge/程序员-龙台-blue.svg" />
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<a target="_blank" href="http://mp.weixin.qq.com/s?__biz=Mzg4NDU0Mjk5OQ==&mid=100007311&idx=1&sn=d325c1a509d6ee89469a1134ac0a8cf5&chksm=4fb7c6f778c04fe111e9cf52723675b8e8cbbbf9e848741a5d9c20620ff6c778b6613e021a34&scene=18#wechat_redirect">
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<img src="https://img.shields.io/badge/公众号-龙台 blog-yellow.svg" />
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</a>
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<a target="_blank" href="https://github.com/longtai94/dynamic-thread-pool">
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<img src="https://img.shields.io/badge/⭐-github-orange.svg" />
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</a>
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<a href="https://github.com/longtai94/dynamic-thread-pool/blob/develop/LICENSE">
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<img src="https://img.shields.io/github/license/longtai94/dynamic-thread-pool?color=42b883&style=flat-square" alt="LICENSE">
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</a>
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<img src="https://img.shields.io/badge/JDK-1.8-violet.svg" />
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<img src="https://img.shields.io/badge/release-v1.0.0-green.svg" />
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<img src="https://img.shields.io/github/stars/longtai94/dynamic-thread-pool.svg" />
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</p>
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<br/>
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我有一个 IDEA，动态线程池监控，主意来源于美团技术公众号 [点击查看美团线程池文章](https://tech.meituan.com/2020/04/02/java-pooling-pratice-in-meituan.html)
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<br/>
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看了文章后深受感触，再加上最近线上线程池的不可控以及不可逆等问题，想做出一个兼容性、功能性、易上手等特性集于一身的的开源项目。目标还是要有的，虽然过程可能会艰辛
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<br/>
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目前这个项目是由作者独立开发，时间在下班后、周六天等。具体什么时候能发布 1.0 版本不好说，需要看实际的开发情况
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<br/>
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根据目前的想法，美团技术文章中支持的特性，DTP（Dynamic Thread Pool）项目都会兼容进去，可能部分会因为作者技术有限，无法兼容
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比如：
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- 修改阻塞队列长度
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- 修改线程池核心线程数、最大线程数、线程存活时长...
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- 线程池详细信息监控
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- 线程池负载报警
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- ...
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<br/>
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项目不会强依赖某个不通用的中间件，比如配置中心：Nacos、Apollo、Consul... 有可能会将组件全部支持，自定义选择使用
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<br/>
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<img src="https://images-machen.oss-cn-beijing.aliyuncs.com/image-20210707112609388.png" alt="美团动态化线程池功能架构" style="zoom:50%;" />
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<br/>
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> 图片来源自美团技术博客
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<br/>
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## 本地部署
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目前动态线程池功能已经完成，大家可以直接把代码拉到本地运行
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<br/>
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> 项目数据库连接是作者个人 ECS Docker 搭建的 MySQL，防君子不防小人，大家直接使用即可
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<br/>
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启动 server 模块下 ServerApplication 启动类
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<br/>
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启动 example 模块下 ExampleApplication 启动类
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<br/>
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可以通过调用接口修改线程池配置
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<br/>
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修改请求如下，**在做示例时不要改动 tenantId、itemId、tpId**
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<br/>
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POST http://localhost:6691/v1/cs/configs
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<br/>
|
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```json
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{
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"tenantId": "common",
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"itemId": "message-center",
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"tpId": "message-consume",
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"coreSize": 3,
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"maxSize": 10,
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"queueType":9,
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"capacity":1000,
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"keepAliveTime" : 1000,
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"isAlarm":1,
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"capacityAlarm":80,
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"livenessAlarm":80
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}
|
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```
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<br/>
|
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接口调用成功后，观察 example 控制台日志输出，日志输出包括不限于此信息即为成功
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<br/>
|
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[🚀] Changed thread pool. coreSize :: x, maxSize :: x, queueType :: x, capacity :: x, keepAliveTime :: x
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