redis 实例

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#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#include <hiredis/hiredis.h>
void doTest() {
    //redis默认监听端口为6387，可以在配置文件中修改
    redisContext* c = redisConnect("127.0.0.1", 6379);
    if ( c->err)
    {
        redisFree(c);
        printf("Connect to redisServer faile\n");
        return ;
    } 
    printf("Connect to redisServer Success\n");
    const char* command1 = "set key1 value1";
    redisReply* r = (redisReply*)redisCommand(c, command1);
    if( NULL == r) {
        printf("Execut command1 failure\n");
        redisFree(c);
        return;
    } 
    if( !(r->type == REDIS_REPLY_STATUS && strcasecmp(r->str,"OK")==0)) {
        printf("Failed to execute command[%s]\n",command1);

        freeReplyObject(r);
        redisFree(c);
        return;
    } 
    freeReplyObject(r);
    printf("Succeed to execute command[%s]\n", command1);
    const char* command2 = "strlen key1";
    r = (redisReply*)redisCommand(c, command2);
    if ( r->type != REDIS_REPLY_INTEGER) {
        printf("Failed to execute command[%s]\n",command2);
        freeReplyObject(r);
        redisFree(c);
        return;
    } 
    intlength= r->integer;
    freeReplyObject(r);
    printf("The length of 'key1' is %d.\n", length);
    printf("Succeed to execute command[%s]\n", command2);
    const char* command3 = "get key1";
    r = (redisReply*)redisCommand(c, command3);
    if ( r->type != REDIS_REPLY_STRING)
    {
        printf("Failed to execute command[%s]\n",command3);
        freeReplyObject(r);
        redisFree(c);
        return;
    } 
    printf("The value of 'key1' is %s\n", r->str);
    freeReplyObject(r);
    printf("Succeed to execute command[%s]\n", command3);
    const char* command4 = "get key2";
    r = (redisReply*)redisCommand(c, command4);
    if ( r->type != REDIS_REPLY_NIL)
    {
        printf("Failed to execute command[%s]\n",command4);
        freeReplyObject(r);
        redisFree(c);
        return;
    } 
    freeReplyObject(r);
    printf("Succeed to execute command[%s]\n", command4);
    redisFree(c);
} 
int main(void)
{
    doTest();

    return 0;
}
编译：
gcc testredis.c -lhiredis -o testredis
运行：
./testredis