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License: Apache License 2.0
Redis C++ Client
License: Apache License 2.0
Following code, always returns 1. What can be the issue?
const std::string& lua_scripts = r3c::format_string("local i=0; redis.call('HINCRBY',KEYS[1],ARGV[1],1); i= redis.call('HGET',KEYS[1],ARGV[1]); return i;");
std::vector<std::string> keys;
std::vector<std::string> parameters;
parameters.push_back("MYINSTANCE");
keys.push_back("NEXTINSTANCEID");
unsigned int myIDi=1;
const r3c::RedisReplyHelper redis_reply = rc.eval(lua_scripts,keys,parameters);
if (REDIS_REPLY_INTEGER == redis_reply->type)
myIDi= static_cast<int>(redis_reply->integer);
std::cout << myIDi << std::endl;
If I execute same in redis_cli, it works.
192.168.1.12:7050> eval "local i=0; redis.call('HINCRBY',KEYS[1],ARGV[1],1); i= redis.call('HGET',KEYS[1],ARGV[1]); return i;" 1 NEXTINSTANCEID MYINSTANCE
"16"
Typo in rpush function
---a/r3c.cpp
+++ b/r3c.cpp
@@ -880,7 +880,7 @@ bool CRedisClient::rpop(const std::string& key, std::string* value, std::pair<st
int CRedisClient::rpush(const std::string& key, const std::string& value, std::pair<std::string, uint16_t>* which) throw (CRedisException)
{
std::vector<std::string> values(1, value);
- return rpush(key, value, which);
+ return rpush(key, values, which);
}
使用R3C存储 json 字符串
nlohmann::json j;
j["file"] = "demo.mp3";
std::string val = j.dump();
std::cout<<"json string "<<val<<std::endl;
if (!rc.hset("domain/f", "domain", val))
存储格式为
{"file":"demo.mp3"},
使用R3C 读取的字符串没有问题,
但是实验redis客户端读取出来,多一个反斜杠,hget domain/f domain
"{"file":"demo.mp3"}"
这个编辑器好像去掉了,附上一张图片。
使用nginx, lua客户端端读取也是带反斜杠的。
有没有简单的解决思路?
Do you have any example with connection pool?
如题。
在配置文件中配置了unixsocket,关闭了port。如何使用r3c连接redis服务器
unixsocket /tmp/redis.sock
unixsocketperm 777
could you give a demo with password and auth for redis cluster
在 1670 行 : CRedisClient::zrangebyscore 的实现中,
应该修改 const std::string str1 = any2string(min); const std::string str2 = any2string(max);
在 1692 行 : CRedisClient::zrevrangebyscore 的实现中,
应该修改 const std::string str1 = any2string(min); const std::string str2 = any2string(max);
else if (REDIS_REPLY_INTEGER == redis_reply->type)
{
result = redis_reply->integer;
}
bool CRedisClient::hset(const std::string& key, const std::string& field, const std::string& value, std::pair<std::string, uint16_t>* which) throw (CRedisException)
{
struct ParamInfo param_info("HSET", sizeof("HSET")-1, &key, which);
param_info.str1 = &field;
param_info.str2 = &value;
int64_t result = redis_command(REDIS_REPLY_INTEGER, ¶m_info);
return result > 0;
}
When the value set by hset is written repeatedly, redis_reply-> integer returns the value 0.
so hset will return false.
当hset重复存入的value时, redis_reply-> integer 返回值是0。
会导致hset 函数中 关于 大于0的判断 返回 false。 这里是不是应该改为 >=0 ,或者 修改为 返回int类型
场景描述:
集群模式下,设置密码。如果一个主节点异常,从节点转换为主节点。
调用构造函数时,节点信息传入的是原始的主节点信息。
此时循环尝试连接节点时,如果第一次连接到坏掉的节点,连接的异常信息会保存在errorinfo里面。
在第二次连接时,errorinfo信息被传入connect_redis_node()。上次失败的errorinfo信息没有被清空,会影响本次连接时的AUTH验证。 触发 NOAUTH Authentication required 的异常。
support watch/multi/exec commands
bool CRedisClient::lpop(const std::string& key, std::string* value, Node* which, int num_retries)
{
CommandArgs cmd_args;
cmd_args.set_key(key);
cmd_args.set_command("LPOP");
cmd_args.add_arg(cmd_args.get_command());
cmd_args.add_arg(key);
cmd_args.final();
// Bulk string reply: the value of the first element, or nil when key does not exist.
const RedisReplyHelper redis_reply = redis_command(false, num_retries, key, cmd_args, which);
if (REDIS_REPLY_NIL == redis_reply->type)
return false;
if (REDIS_REPLY_STRING == redis_reply->type)
return get_value(redis_reply.get(), value);
return true; // MULTI & EXEC the type always is REDIS_REPLY_STATUS
}
redis_command
第一个参数is_read_command
被设为false
,导致异步模式下redisReply
直接被丢弃
Hi Will you be able to enable it for LSET, LPUSH ,LDEL, LRANGE...? Basically new sets of list command support.
目前测试是不会自动切换连接到其他节点,是有特殊的参数要设置吗?
hi
Will you be able to support C++17. Primarily dynamic exception specifications like throw (CRedisException);
are no more supported.
When I do make,
/usr/bin/c++ -g -rdynamic CMakeFiles/r3c_test.dir/r3c_test.cpp.o -o r3c_test -L/r3c -L/r3c/HIREDIS_LIB-NOTFOUND -Wl,-rpath,/r3c:/r3c/HIREDIS_LIB-NOTFOUND -Wl,-Bstatic -lr3c -lhiredis -Wl,-Bdynamic
fails with error /usr/bin/ld: cannot find -lhiredis
If I remove extra -Wl,
before -Bstatic,
it works. Mean
/usr/bin/c++ -g -rdynamic CMakeFiles/r3c_test.dir/r3c_test.cpp.o -o r3c_test -L/r3c -L/r3c/HIREDIS_LIB-NOTFOUND -Wl,-rpath,/r3c:/r3c/HIREDIS_LIB-NOTFOUND -Bstatic -lr3c -lhiredis -Wl,-Bdynamic
works.
一天下来会有成千上万次这个错误,这个问题怎么解决呢?
Sorry for opening an issue for this, I did not find any better means of contacting you.
I would like to invite your community to write a review for an alternative Redis client library that is being proposed for inclusion in boost. As the author of a redis client yourself your opinion would be highly valuable. For more information see https://lists.boost.org/Archives/boost/2023/01/253871.php.
Thanks
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