Redist PING, SET, GET example. Requires hiredis library

alvaro-redis.c

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

#include "hiredis.h"
// Shameless copy of example.c
// Depends on hiredis - download and make, drop this file on the hiredis folder and run
// gcc alvaro-redis.c libhiredis.a -o alvaro-redis -static  

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);
    }

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

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

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

    /* DEL alvaro */
    reply = redisCommand(c,"DEL alvaro");
    freeReplyObject(reply);

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

    return 0;
}