使用redis-plus-plus库连接redis的实现方法

sudo apt install libhiredis-dev

sudo yum install hiredis-devel.x86_64

git clone https://github.com/sewenew/redis-plus-plus.git

unzip 文件名

#进入解压后获取到的文件夹
cd redis-plus-plus
#创建build文件夹且进入
mkdir build && cd build
#编译生成makefile文件
cmake ..
#编译源代码
make
#安装
sudo make install

sudo yum install cmake3 -y

.
├── Makefile
└── src
    ├── generic.cc
    ├── list.cc
    ├── set.cc
    └── string.cc
1 directory, 5 files

test: test.cc
g++ -std=c++17 -o $@ $^ /usr/local/lib/libredis++.a /lib/x86_64-linux-gnu/libhiredis.a -pthread

//头文件根据实际情况，可能路径不同
#include<iostream>
#include<vector>
#include<string>
#include<hiredis/hiredis.h>
#include<sw/redis++/redis.h>
int main(){

    Redis redis("tcp://127.0.0.1:6379");//传入url
    return 0;
}

//添加元素
std::string key = "key";
std::string value = "hello";

bool b = redis.set(key, value);
//b = redis.set("mykey", "World", std::chrono::seconds(0),sw::redis::UpdateType::EXIST);
//b = redis.set("mykey", "World", std::chrono::milliseconds(0), sw::redis::UpdateType::NOT_EXIST);
std::cout << "set " << key << value << std::endl;
if(b){
    std::cout << " set OK" << std::endl;
}else{
    std::cout << "set failed" << std::endl;
}

//批量添加元素
std::vector<std::pair<std::string,std::string>> v = {{"key","hello",},{"key1","world"},{"key2", "redis"}};
redis.mset(v.begin(),v.end());

//判断元素是否存在
std::string key = "key";
long long n = redis.exists(key);
std::cout << "exists key" << std::endl << n << std::endl;

//获取元素
sw::redis::OptionalString ret = redis.get(key);
std::cout << "redis<<< " << "get " << key << std::endl;
if(ret){
    std::cout << *ret << std::endl;
}else{
    std::cout << "nil" << std::endl;
}

//批量获取元素
std::vector<sw::redis::OptionalString> values;
//创建插入迭代器
//std::insert_iterator<std::vector<sw::redis::OptionalString>> ret = std::inserter(values, values.begin());
std::insert_iterator<std::vector<sw::redis::OptionalString>> ni(values,values.begin());

redis.mget({"key", "key1", "key2"}, ni);

//输出获取到的元素
for(auto e : values){
    std::cout << *e << std::endl;
}

//设置过期时间
std::string key = "key";
bool b = redis.expire(key,std::chrono::seconds(10));
if(b == false)std::cout << "expire failed" << std::endl;

//获取过期时间
long long s = redis.ttl(key);
std::cout << key << "的过期时间：" << s << std::endl;

//获取当前key的类型
std::string type = redis.type(key);
std::cout << key << "类型为：" << type << std::endl;

redis.flushdb();