redis存取二进制数据

loviezhang

于 2015-09-30 10:27:48 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/loviezhang/article/details/48825923

本文通过示例代码详细介绍了如何使用redisCommandArgv接口在Redis中进行二进制数据的存储与读取，强调了该接口的二进制安全性。

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redis提供的API中，redisCommandArgv接口是二进制安全的，我们可以利用此接口实现对二进制的存取。下面是测试代码

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

#include <iostream>
#include <sstream>

#include "hiredis.h"

struct st
{
	int a;
	int b;
	char c;
	int d;
};

void set(void)
{
	struct st t;
	t.a = 1;
	t.b = 2;
	t.c = 'a';
	t.d = 4;

	redisContext *c = redisConnect("127.0.0.1", 6379);
	if (!c) {
		printf("connect to redis fail\n");
		exit(1);
	}

	const char *v[3];
	size_t vlen[3];
	v[0] = "set";
	vlen[0] = strlen("set");

	v[1] = "c";
	vlen[1] = strlen("c");

	v[2] = (const char *)&t;
	vlen[2] = sizeof(struct st);

	redisReply *r = (redisReply *)redisCommandArgv(c, sizeof(v) / sizeof(v[0]), v, vlen);
	if (!r) {
		printf("empty reply\n");
		exit(1);
	}

	printf("reply: