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前言
之前给公司作网关，一直想找个牛逼点的C++ 的 或者 C的 redis连接库。 结果很多都不近人意。
常见的是：hiredis 和hirredisvip
hiredis 和hirredisvip 都是最基础的。也没封装什么连接池啊，自动重连啊，那些东西。适合简单的场景。或者你自己手艺好，能自己封装一层好的接口。
后来尝试：cloredis
最后发现：redisplus plus
直到有一天我问同事，他们给我看redis官网推荐的C++的连接库，有好多库。好几页。而平时看的redis中文网推荐的才几个。艾玛。耽误事儿啊。
然后我接触了redisplus plus (redis++）。感觉蛮给力的玩意。
连接单机模式的
#include <unistd.h>
#include <chrono>
#include <tuple>
#include <iostream>
#include <vector>
#include <map>
#include <unordered_set>
#include <sw/redis++/redis++.h>
#include <sw/redis++/sentinel.h>
#include <sw/redis++/connection.h>
#include <sw/redis++/connection_pool.h>
//using namespace std;
using namespace sw::redis;
using namespace std::chrono;
int main()
{
ConnectionOptions connection_options;
connection_options.host = "192.168.11.85"; // Required.
connection_options.port = 16379; // Optional. The default port is 6379.
//connection_options.password = "auth"; // Optional. No password by default.
connection_options.db = 5; // Optional. Use the 0th database by default.
ConnectionPoolOptions pool_options;
pool_options.size = 3; // Pool size, i.e. max number of connections.
pool_options.wait_timeout = std::chrono::milliseconds(100);
ConnectionOptions connection_options2;
connection_options2.host = "192.168.11.85";
connection_options2.port = 16379;
connection_options2.db = 7;
ConnectionPoolOptions pool_options7;
pool_options7.size = 3;
pool_options7.wait_timeout = std::chrono::milliseconds(100);
Redis * redisofDB1 = NULL;
Redis * redisofDB7 = NULL;
// 开始连接
try{
redisofDB1 = new Redis(connection_options, pool_options);
redisofDB7 = new Redis(connection_options2, pool_options7);
}catch (const ReplyError &err) {
printf("RedisHandler-- ReplyError：%s \n",err.what());
return false ;
}catch (const TimeoutError &err) {
printf("RedisHandler-- TimeoutError%s \n",err.what());
return false ;
}catch (const ClosedError &err) {
printf("RedisHandler-- ClosedError%s \n",err.what());
return false ;
}catch (const IoError &err) {
printf("RedisHandler-- IoError%s \n",err.what());
return false ;
}catch (const Error &err) {
printf("RedisHandler-- other%s \n",err.what());
return false ;
}
/*
std::map<std::string, std::string> hashTerm;
redisofDB7->hgetall("FORWARD.PLAT.DETAIL",std::inserter(hashTerm, hashTerm.end()));
for(auto it1 = hashTerm.begin() ;it1 != hashTerm.end(); it1++)
{
std::cout <<"Plat ID：" <<it1->first <<std::endl;
std::cout << "Plat UserName & Password"<<it1->second <<std::endl;
}
*/
// 开始干活
auto cursor = 0LL;
auto pattern = "*";
auto count = 5;
//std::unordered_set<std::string> keys;
std::map<std::string, std::string> hashs;
while (true) {
cursor = redisofDB7->hscan("FORWARD.PLAT.DETAIL",cursor, pattern, count, std::inserter(hashs, hashs.begin()));
if (cursor == 0) {
break;
}
}
if(hashs.size() < 1)
{
printf("we get nothing !\n");
}
for(auto it1 = hashs.begin() ;it1 != hashs.end(); it1++)
{
std::cout <<"Plat ID：" <<it1->first <<std::endl;
std::cout << "Plat UserName & Password"<<it1->second <<std::endl;
}
OptionalString strValue = redisofDB1->hget("XNY.CARINFO","CRC01211711100232");
std::cout<< " CRC01211711100232 的 vin :" << *strValue << std::endl;
std::string straa = *strValue;
if(straa.empty())
{
std::cout << "we gete nothing " << std::endl ;
}
std::cout<< " ---- CRC01211711100232 的 details :" << straa << std::endl;
std::cout<< " ---- 下面试试hincrby ---- " << std::endl;
auto cursor2 = 0LL;
auto pattern2 ="*";
auto count2 = 20;
std::map<std::string, std::string> vv;
std::vector<std::string> vlist;
while (true) {
cursor2 = redisofDB7->hscan("FORWARD.LIST.002",cursor2, pattern2, count2, std::inserter(vv, vv.begin()));
if (cursor2 == 0) {
break;
}
}
for(auto it1 = vv.begin() ;it1 != vv.end(); it1++)
{
vlist.push_back(it1->first);
}
for(auto uu = vlist.begin(); uu !=vlist.end(); uu ++ )
{
std::cout << *uu << std::endl;
}
return 0;
}
连接哨兵模式的
#include <unistd.h>
#include <chrono>
#include <tuple>
#include <iostream>
#include <vector>
#include <map>
#include <sw/redis++/redis++.h>
#include <sw/redis++/sentinel.h>
#include <sw/redis++/connection.h>
#include <sw/redis++/connection_pool.h>
//using namespace std;
using namespace sw::redis;
int main()
{
SentinelOptions sentinel_opts;
// sentinel_opts.nodes = {{"127.0.0.1", 9000},
// {"127.0.0.1", 9001},
// {"127.0.0.1", 9002}}; // Required. List of Redis Sentinel nodes.
sentinel_opts.nodes = {{"192.168.127.134", 26379}};// Required. List of Redis Sentinel nodes.
// Optional. Timeout before we successfully connect to Redis Sentinel.
// By default, the timeout is 100ms.
sentinel_opts.connect_timeout = std::chrono::milliseconds(200);
// Optional. Timeout before we successfully send request to or receive response from Redis Sentinel.
// By default, the timeout is 100ms.
sentinel_opts.socket_timeout = std::chrono::milliseconds(200);
auto sentinel = std::make_shared<Sentinel>(sentinel_opts);
ConnectionOptions connection_opts;
//connection_opts.password = "auth"; // Optional. No password by default.
connection_opts.db = 1;
connection_opts.connect_timeout = std::chrono::milliseconds(100); // Required.
connection_opts.socket_timeout = std::chrono::milliseconds(100); // Required.
ConnectionPoolOptions pool_opts;
pool_opts.size = 3; // Optional. The default size is 1.
auto redis = Redis(sentinel, "mymaster", Role::MASTER, connection_opts, pool_opts);
Redis* p = &redis;
std::map<std::string, std::string> hash;
p->hgetall("PLATINFO",std::inserter(hash, hash.end()));
for(auto it = hash.begin() ;it != hash.end(); it++)
{
std::cout <<"Plat ID：" <<it->first <<std::endl;
std::cout << "Plat UserName & Password"<<it->second <<std::endl;
}
ConnectionOptions connection_opts2;
//connection_opts.password = "auth"; // Optional. No password by default.
connection_opts2.db = 2;
connection_opts2.connect_timeout = std::chrono::milliseconds(100); // Required.
connection_opts2.socket_timeout = std::chrono::milliseconds(100); // Required.
auto redisDB2 = Redis(sentinel, "mymaster", Role::MASTER, connection_opts2, pool_opts);
Redis*pp = &redisDB2;
std::map<std::string, std::string> hashTerm;
pp->hgetall("TERMINAL:LIST:test123456789012",std::inserter(hashTerm, hashTerm.end()));
for(auto it1 = hashTerm.begin() ;it1 != hashTerm.end(); it1++)
{
std::cout <<"Plat ID：" <<it1->first <<std::endl;
std::cout << "Plat UserName & Password"<<it1->second <<std::endl;
}
// 是否存在
bool bb = p->hexists("PLATINFO","test123456789012");
std::cout << "PLATINFO 里 存在 test123456789012:" << bb << std::endl;
// hget - 注意这里，OptionalString 是大部分查询命令的返回值类型，要想转为string 需要加*
OptionalString strValue = p->hget("PLATINFO","test1234567890123");
std::cout<< " test123456789012 的 details :" << *strValue << std::endl;
std::string straa = *strValue;
if(straa.empty())
{
std::cout << "we gete nothing " << std::endl ;
}
std::cout<< " ---- test123456789012 的 details :" << straa << std::endl;
// 测试hkeys
std::vector<std::string> vPaltIDs;
p->hkeys("PLATINFO",std::inserter(vPaltIDs, vPaltIDs.end()));
for(auto vIter = vPaltIDs.begin();vIter != vPaltIDs.end(); vIter ++)
{
std::cout << *vIter << std::endl;
}
return 0;
}
//g++ -std=c++11 -I/usr/local/include -L/usr/local/lib -Wl,-rpath=../libc++ -o app testRedisSentinel.cpp -lredis++ -lhiredis -pthread
//
连接集群模式的
#include <unistd.h>
#include <chrono>
#include <tuple>
#include <iostream>
#include <vector>
#include <map>
#include <unordered_set>
#include <sw/redis++/redis++.h>
#include <sw/redis++/sentinel.h>
#include <sw/redis++/connection.h>
#include <sw/redis++/connection_pool.h>
//using namespace std;
using namespace sw::redis;
using namespace std::chrono;
int main()
{
ConnectionOptions connection_options;
connection_options.host = "192.168.11.124"; // Required.
connection_options.port = 7001; // Optional. The default port is 6379.
//connection_options.password = "auth"; // Optional. No password by default.
connection_options.db = 0; // Optional. Use the 0th database by default.
ConnectionPoolOptions pool_options;
pool_options.size = 5; // Pool size, i.e. max number of connections.
pool_options.wait_timeout = std::chrono::milliseconds(100);
RedisCluster* redisofDB1 = NULL;
try{
redisofDB1 = new RedisCluster(connection_options, pool_options);
}catch (const ReplyError &err) {
printf("RedisHandler-- ReplyError：%s \n",err.what());
return false ;
}catch (const TimeoutError &err) {
printf("RedisHandler-- TimeoutError%s \n",err.what());
return false ;
}catch (const ClosedError &err) {
printf("RedisHandler-- ClosedError%s \n",err.what());
return false ;
}catch (const IoError &err) {
printf("RedisHandler-- IoError%s \n",err.what());
return false ;
}catch (const Error &err) {
printf("RedisHandler-- other%s \n",err.what());
return false ;
}
// 连接成功- 下面开始干活儿。
printf("-----连接成功，下面开始干活儿-----\n");
#if 1
//1.先测试一个gethall 用hscan代替得吧
auto cursor = 0LL;
auto pattern = "*";
auto count = 5;
//std::unordered_set<std::string> keys;
std::map<std::string, std::string> hashs;
while (true) {
cursor = redisofDB1->hscan("farm:status:NJTEST0000000005_20200702132812",cursor, pattern, count, std::inserter(hashs, hashs.begin()));
if (cursor == 0) {
break;
}
}
if(hashs.size() < 1)
{
printf("we get nothing !\n");
}
std::cout << "the hashs.size = " << hashs.size() << std::endl;
for(auto it1 = hashs.begin() ;it1 != hashs.end(); it1++)
{
std::cout <<"key:" <<it1->first << "Value:"<<it1->second <<std::endl;
}
#endif
#if 0
// 2.测试hsetnx
std::cout << "------------------------测试hsetnx---------------------------" << std::endl;
std::string strValue = "SUBMIT$2$TES21129BH2000001$UPDATE$TIME:20200818163607,TYPE:3,VALUE:MjIzLjIyMy4xODcuMzUsMTA1MCxmdGFkbWluLGZ0YWRtaW44MTY0NSxINENfVjEuMy4zN18yMDIwMDgxN19hNDdhLmJpbiww,MODEL:2";
//std::string strfeild = "1597739777";
bool vBol = redisofDB1->hsetnx("farm:command:TES21129BH2000001", std::to_string(1597739778), strValue);
std::cout << "hsetnx wanbi : " << vBol << std::endl;
//3.测试hdel
bool vBol2 = redisofDB1->hdel("farm:command:TES21129BH2000001", strfeild);
std::cout << "hdel wanbi : " << vBol2 << std::endl;
//4.测试del
bool vBol3 = redisofDB1->del("farm:command:NJTEST0000000009");
std::cout << "del wanbi : " << vBol3 << std::endl;
//5.hlen
long long llen = redisofDB1->hlen("farm:status:TST1010191210110_20200701114501");
std::cout<< "the len is :" << llen << std::endl;
//6.测试hset
bool bbb = redisofDB1->hset("farm:clientnum","WUZ11010BC100009","009");
std::cout << "hset finished is :" << bbb << std::endl;
//7.测试expire
redisofDB1->expire("farm:status:NJTEST0000000005_20200624135512",60);
#endif
return 0;
}
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