Redis接口的调用

1、hiredis是redis数据库的C接口，目录为/redis-3.2.6/deps/hiredis

2、示例代码如下：

    #include <stdio.h>

    #include <stdlib.h>

    #include <stddef.h>

    #include <stdarg.h>

    #include <string.h>

    #include <assert.h>

    #include "hiredis.h"

    int main()

    {

        //连接redis

        redisContext* c = redisConnect("127.0.0.1", 6379);

        if ( c->err)

        {

            redisFree(c);

            printf("Connect to redisServer faile\n");

            return -1;

        }

        printf("Connect to redisServer Success\n");

        const char* setCommand = "set name andy";

        redisReply* r = (redisReply*)redisCommand(c, setCommand);

        if( NULL == r)

        {

            printf("Execut setCommand failure\n");

            redisFree(c);

            return -1;

        }

        if( !(r->type == REDIS_REPLY_STATUS && strcasecmp(r->str,"OK")==0))

        {

            printf("Failed to execute command[%s]\n",setCommand);

            freeReplyObject(r);

            redisFree(c);

            return -1;

        }

        freeReplyObject(r);

        printf("Succeed to execute command[%s]\n", setCommand);

        const char* getCommand = "get name";

        r = (redisReply*)redisCommand(c, getCommand);

        if ( r->type != REDIS_REPLY_STRING)

        {

            printf("Failed to execute command[%s]\n",getCommand);

            freeReplyObject(r);

            redisFree(c);

            return -1;

        }

        printf("Succeed to execute command[%s]\n", getCommand);

        printf("The value of 'name' is %s\n", r->str);

        freeReplyObject(r);

        redisFree(c);

        return 0;

    }

3、编译，运行如下：

    [root@localhost hiredis]# g++ -o main main.cpp libhiredis.a

    [root@localhost hiredis]# ./main

    Connect to redisServer Success

    Succeed to execute command[set name andy]

    Succeed to execute command[get name]

    The value of 'name' is andy