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提到限流，常规情况，可以通过spring-cloud-starter-alibaba-sentinel 或者 resilience4j-ratelimiter 组件完成，但是如果不借助现有组件让我们自己开发一套限流工作应该如何应对呢？
本次我们通过Redis + Lua 脚本来实现一个限流组件。
首先创建项目：redis-limit

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>com.wheelmouse</groupId><artifactId>study</artifactId><version>1.0-SNAPSHOT</version></parent><artifactId>redis-limit</artifactId><description>redis限流</description><properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><!-- 去掉springboot默认配置 --><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><!--commons-api-util--><dependency><groupId>com.wheelmouse</groupId><artifactId>commons-api-util</artifactId><version>1.0-SNAPSHOT</version></dependency><!--使用log4j2替换 LogBack--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-log4j2</artifactId></dependency><!--guava--><dependency><groupId>