redis 安装与c语言使用redis

一、redis安装

1.apt install redis-server

2.netstat -ntlp 查看，有6379表示redis服务已启动。

3.默认安装无密码，vim /etc/redis/redis.conf 放开 requirepass ，使用foobared 作为密码。

4./etc/init.d/redis-server retsart

5.redis-cli -a foobared

6.ping 得到 pong 表示成功。

二、c 语言使用redis

1.https://github.com/redis/hiredis 下载最新tag 源码

2.cmake .

3. make -j4

4.将所有.h 拷贝到include 中，libhiredis.so 拷到lib中。

#include 
#include 
#include "hiredis.h"

int main()
{
    redisContext *ctx = redisConnect("127.0.0.1",6379);
    if (ctx == NULL)
    {
        printf("errn");
        exit(-1);
    }
    if (ctx ->err)
    {
        printf("connect error %sn",ctx->errstr);
        exit(-1);
    }

    struct redisReply* reply = (struct redisReply*)redisCommand(ctx,"Auth %s","foobared");
    printf("auth ret is %sn",reply->str);
    freeReplyObject(reply);

    reply = (struct redisReply*)redisCommand(ctx,"set xx 1");
    printf("cmd ret is %sn",reply->str);
    freeReplyObject(reply);

    reply = (struct redisReply*)redisCommand(ctx,"get xx");
    printf("cmd ret is %sn",reply->str);
    freeReplyObject(reply);

    redisFree(ctx);
    return 0;
}

6. gcc test.c -I redis/include/ -L redis/lib/ -lhiredis && ./a..out

7.结果