C 连接示例

运行前必备:
下载并安装 hiredis。

示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <hiredis.h>

int main(int argc, char **argv) {
    unsigned int j;
    redisContext *c;
    redisReply *reply;

if (argc < 4) {
      printf("Usage: 192.xx.xx.195 6379 instance_id password\n");
      exit(0);
    }
    const char *hostname = argv[1];
    const int port = atoi(argv[2]);
    const char *instance_id = argv[3];
    const char *password    = argv[4];


    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);
    }

    /* AUTH */
    reply = redisCommand(c, "AUTH %s", password);
    printf("AUTH: %s\n", reply->str);
    freeReplyObject(reply);

    /* PING server */
    reply = redisCommand(c,"PING");
    printf("PING: %s\n", reply->str);
    freeReplyObject(reply);

    /* Set a key */
    reply = redisCommand(c,"SET %s %s", "name", "credis_test");
    printf("SET: %s\n", reply->str);
    freeReplyObject(reply);

    /* Try a GET  */
    reply = redisCommand(c,"GET name");
    printf("GET name: %s\n", reply->str);
    freeReplyObject(reply);

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

    return 0;
}

运行结果：