You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
spring-cloud-tencent/spring-cloud-tencent-examples/polaris-ratelimit-example/README.md

66 lines
2.1 KiB

3 years ago
# Spring Cloud Polaris RateLimit Example
## Project Explanation
This project shows how to use ratelimit feature of Polaris to complete Spring Cloud application's rate limit
## Example
### How to access
Before showcasing the project, let's get to know how to access Polaris rate limit component
> ** note: this chapter is to help you understand different ways to access, the codes in the example has been executed, you don't need to re-edit.**
1, first, change document `pom.xml`, introduce Polaris ratelimit starter
```xml
<dependency>
<groupId>com.tencent.cloud</groupId>
<artifactId>spring-cloud-starter-tencent-polaris-ratelimit</artifactId>
</dependency>
```
2. Launch Application
Examples provided by Polaris all support to run at IDE, or compile and run with orders
- Launch Polaris locally
- at Polaris end, through control panel, under namespace Product, add RateLimitCalleeService
- Launch callee server:
1. Launch IDE directly: First find `RateLimitCalleeService`, execute main then launch application
2. compile package then launch: first execute `mvn clean package` compile the package, then execute `java -jar ratelimit-callee-sevice-${verion}.jar` execute the application
- After launching, one can watch server instance from Polaris control panel
3. Invoke Service
After visiting http://127.0.0.1:48081/business/invoke, one can see the following information:
````
hello world for ratelimit service 1
hello world for ratelimit service 2
hello world for ratelimit service 3
...
````
4. Configuration rate limit and verification
Polaris provide three wats to conduct rate limit configuration (control panel, HTTP port and local files)
this example is HTTP configuration. One can figure with the following steps:
````
curl -X POST -H "Content-Type:application/json" 127.0.0.1:8090/naming/v1/ratelimits -d @rule.json
````
5. Verify rate limit result
continue visit http://127.0.0.1:48081/business/invoke, one can see, after 10 invokes, rate limit will start:
````
hello world for ratelimit service 1
hello world for ratelimit service 2
````