redis知识积累

这里会记录redis的一些常用命令与理论

redis常用命令

ps -ef|grep redis
which redis-cli
redis-cli -h 192.168.201.208
auth redis_pwd

查询配置
config get tcp-keepalive

redis知识理论

redis默认的tcp-keepalive是300秒，可以通过添加依赖，自定义tcp_user_timeout

       
            io.netty
            netty-transport-native-epoll
            linux-aarch_64
        
        
            io.netty
            netty-transport-native-epoll
            linux-x86_64
        

代码实现

protected ClientResources createClientResource() {

    return ClientResources.builder()
            .nettyCustomizer(new NettyCustomizer() {
                @Override
                public void afterBootstrapInitialized(Bootstrap bootstrap) {
                    if (EpollProvider.isAvailable()) {
                        // TCP_USER_TIMEOUT >= TCP_KEEPIDLE + TCP_KEEPINTVL * TCP_KEEPCNT
                        // https://blog.cloudflare.com/when-tcp-sockets-refuse-to-die/
                        bootstrap.option(EpollChannelOption.TCP_USER_TIMEOUT, 7000);
                    }
                }
            }).build();
}