Java the Redis Client Jedisfirst, with Windows the eclipse in Redis that connects virtual machines the precautionsDisable Linux firewall: Execute command service iptables stop in LinuxMine is already disabled,Modify redis.conf to comment out bind 127.0.0.1, and then Protect-mode NoSecond, the new Dynamic Java project,① Guide BagSpit Groove, this workspace is Mave
Redis client 2.0.0 pipeline list rpop bug, redisrpop
Description:
The rpop of the list OF redis client 2.0.0 pipeline has a serious bug. When the rpop list is used, if the list is already empty, the Response from rpop is still not null, causing the listresponse to be suspended. the get () method throws an exception.
C
Jedis provides a variety of modes of operation: Single connection mode, single connection pool mode, multi-machine distributed + connection pool. Prepare
jedis-2.5.2Commons-pool2-2.2.jar Use single connection
This method is recommended only for use in the development environment for tuning.
Create a connectionString host = "192.168.56.102";
int port = 6379;
Jedis client = new Jedis (host, Port);
Execute set instruction
String result = Client.set ("key
Reference link for Redis distributed locks: http://redis.io/topics/distlock.In our project, before pondering using: Servicestack.redis, found that Servicestack.redis charges, operating more than 6,000 times per hour error : "The Free-quota limit on ' 6000 Redis requests per hour ' has been reached ... "So look at other Redis clients:Stackexchange.redis seemingly
with the name key
Hkeys (Key): Returns all keys in a hash with the name key
Hvals (Key): Returns the value corresponding to all keys in a hash with the name key
Hgetall (Key): Returns all keys (field) and their corresponding value in a hash with the name key
8. Persistence
Save: Synchronize data to disk
Bgsave: Asynchronously saving data to disk
Lastsave: Returns the UNIX timestamp when the data was last successfully saved to disk
Shundown: Save data synchronously to
long integer;/* The Integer when Type is Redis_reply_integer */int len; /* Length of String */char *str; /* used for both redis_reply_error and redis_reply_string */size_t elements; /* Number of elements, for Redis_reply_array */struct redisreply **element; /* Elements vector for Redis_reply_array */} redisreply;rediscontext *redisconnectwithtimeout (conSt Char *ip, int port, struct timeval TV), void Redisfree (Rediscontext *c);//issue a command to Redis
edis_err_other Other unknown error The above error types can be viewed through the Errstr field of redisreply for a short description C) Asynchronous API ( Asynchronous APIs are used in the same way as the synchronization API, where you list different functions. 1. Connect to Redis server Redisasynccontext *c = Redisasyncconnect ("127.0.0.1"6379);
if (c->err) {
printf ("Error:%s\n", c->errstr);
// handle error
} 2. Set
client. Set ("key", 0);When using the statement above to setThe real redis is a blank character, not a 0.Followed the source, foundprivate static byte[] tobytesT> (Tvalue) { varBytesvalue = valueAs byte[]; if(Bytesvalue = =NULL! Equals (Value,default(T)) Bytesvalue = value. ToJson (). Toutf8bytes (); returnBytesvalue;}The problem is in this default (T)The default for int is 0, so null is returnedAccor
Write Redis client by yourself (C # implementation) 4,Integer reply
An integer response is an integer that starts with ":" and ends with a string ending with CRLF.
For example, ": 0 \ r \ n" and ": 1000 \ r \ n" are all integer replies.
Two of the return integer response commands are INCR and LASTSAVE. The returned integer has no special meaning. An auto-increment integer of the incr return key, and LASTSA
Redis receives a connection from a client by listening to a TCP port or a UNIX socket, and when a connection is established, the following actions are performed within Redis:
• First, the client socket is set to non-blocking mode because Redis uses a non-blocking multiplexi
Pub is relatively simpleclient. PublishMessage ("channel""msg");Sub has 2 waysMethod 1Subscription = client. Createsubscription ();subscription. OnMessage = (channel, msg) =>{ Console. WriteLine (String. Format ("Received '{0}' from channel '{1}'", MSG, channel));};subscription. Subscribetochannels ("TESTC");After running the last sentence, the block master, and then the code will not be executedMethod 2Basicredisclientmanager ();Redispubsubserver"
;>>>>>>>119 - //View the data type of a key121 //because the MM key does not exist in the database, the command returns none122String type = Jedis.type ("MM");123System.out.println (type);//None124 theString type2 = Jedis.type ("MyKey");126System.out.println ("type2=" +type2);//type2= String127 - //prepares a value that is a key of the set type129Jedis.sadd ("Mysetkey", "1", "2"); the 131 //the Mysetkey key is set, so the string
Jedis is a Redis Java client that, through a period of time, Jedis basically implements all of Redis's capabilities, and Jedis Redis data sharding on the client, Redis itself has no data distribution capabilities. First, download Jedis code
Jedis Code Address: Https://github
PHP has redis expansion, at present, still do not support Redis cluster, recommended Predis, the function of the whole, from a single, to the master and subordinate, to the cluster are supported. How efficient, you have to rely on their own to test.
1, download Predis
Https://github.com/nrk/predis
2,predis case
Require ' autoload.php ';$servers = Array (' tcp://192.168.10.219:6379 ',' tcp://192.168.10.2
Redis Client connection succeeded, but Operation report exception-(error) Noauth authentication requiredthe meaning of the error is that you do not have authentication, the connection is not using a password
View Password:
Enter the Redis installation directory (which is the installation directory) to view the Redis.config file
VI Redis.config
After opening
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