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68 lines
2.3 KiB
68 lines
2.3 KiB
3 years ago
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# Polaris RateLimit Example
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## Project Explanation
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This project shows how to use ratelimit feature of Polaris to complete Spring Cloud application's rate limit
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[Polaris](https://github.com/polarismesh): Polaris is Tencent open source cloud-native's operation centre and component, provide multi dimensional rate limit service and reliability of application firewall
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## Example
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### How to access
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Before showcasing the project, let's get to know how to access Polaris rate limit component
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> ** 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.**
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1, first, change document `pom.xml`, introduce Polaris ratelimit starter
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```xml
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<dependency>
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<groupId>com.tencent.cloud</groupId>
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<artifactId>spring-cloud-starter-tencent-polaris-ratelimit</artifactId>
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</dependency>
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```
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2. Launch Application
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Examples provided by Polaris all support to run at IDE, or compile and run with orders
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- Launch Polaris locally
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- at Polaris end, through control panel, under namespace Product, add RateLimitCalleeService
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- Launch callee server:
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1. Launch IDE directly: First find `RateLimitCalleeService`, execute main then launch application
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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
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- After launching, one can watch server instance from Polaris control panel
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3. Invoke Service
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After visiting http://127.0.0.1:48081/business/invoke, one can see the following information:
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````
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hello world for ratelimit service 1
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hello world for ratelimit service 2
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hello world for ratelimit service 3
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...
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````
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4. Configuration rate limit and verification
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Polaris provide three wats to conduct rate limit configuration (control panel, HTTP port and local files)
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this example is HTTP configuration. One can figure with the following steps:
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````
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curl -X POST -H "Content-Type:application/json" 127.0.0.1:8090/naming/v1/ratelimits -d @rule.json
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````
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5. Verify rate limit result
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continue visit http://127.0.0.1:48081/business/invoke, one can see, after 10 invokes, rate limit will start:
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````
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hello world for ratelimit service 1
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hello world for ratelimit service 2
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````
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