测试redis EXPIRE设置过期时间并读取数据

测试redis EXPIRE设置过期时间命令

概述

本例子的测试场景是这样的:设置一条数据的过期时间,待数据过期后再获取redisReply 结果中的数据。


测试例子:

#include
#include
#include


#include


int main(int argc, char **argv) {
    unsigned int j;
    redisContext *c;
    redisReply *reply;
    const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
    int port = (argc > 2) ? atoi(argv[2]) : 6379;


    struct timeval timeout = { 1, 500000 }; // 1.5 seconds
    c = redisConnectWithTimeout(hostname, port, timeout);
    if (c == NULL || c->err) {
        if (c) {
            printf("Connection error: %s\n", c->errstr);
            redisFree(c);
        } else {
            printf("Connection error: can't allocate redis context\n");
        }
        exit(1);
    }


    /* Set a key */
    reply = redisCommand(c,"HSET  key  %s %s %s %s", "foo","value","dd", "hello world");
    printf("SET: %s\n", reply->str);
    freeReplyObject(reply);




    reply = (redisReply *)redisCommand(c,"EXPIRE %s %d","key",10);
    if(NULL == reply)
    {
        printf("%s\n","{\"result\":-1,\"errormsg\":\"设置随机数过期时间失败\"}");
    }




    reply = (redisReply *)redisCommand(c,"EXPIRE %s %d","key",10);
    if(NULL == reply)
    {
        printf("%s\n","{\"result\":-1,\"errormsg\":\"设置随机数过期时间失败\"}");
    }
    reply = (redisReply *)redisCommand(c,"hmget key %s %s","foo","dd");
    if(reply !=NULL){
    sleep(20);
    printf("%s\n",reply->element[0]->str);
    }


    /* Disconnects and frees the context */
    redisFree(c);


    return 0;
}

编译:

gcc example.c  -I /usr/local/include/hiredis/ -L /usr/local/lib -lhiredis


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