@Bean
    public CachePlugin cachePlugin() {
        return new CachePlugin();
    }
the cache plugin.
@return the shenyu plugin
shenyu-spring-boot-starter/shenyu-spring-boot-starter-plugin/shenyu-spring-boot-starter-plugin-cache/src/main/java/org/apache/shenyu/springboot/starter/plugin/cache/CachePluginConfiguration.java