The Redis cluster I encountered at work is used

Write an essay, write a note to your work study

Nonsense not much to say, directly on the code:

Features: Store relevant information in Redis and set the expiration time, if any in Redis, get from Redis, if not, get from MySQL. Redis is configured with three clustered environments

1: First, the configuration file is the relevant configuration information, in the Java code, the relevant configuration directly from the configuration file read:

#redis配置MaxActive=10#最大空闲连接数MaxIdle=5#最小空闲连接数MinIdle=3#最大连接数MaxTotal=8  #jedis集群地址AJedisA. Host=192.168.0.191portA=6300#jedis集群地址BJedisB. Host=192.168.0.192  PORTB=6300#jedis集群地址CJedisC. Host=192.168.0.193portc=6300#是否先进先出Lifo=  True#逐出连接的最小空闲时间, default 10 minutes timemillis=600000#用户信息过期时间为1天userPastTime=86400# Split time setting expires at 5 minutes loanpasttime=300#产品过期时间ProductPastTime=60

2: When the project is started, the Redis is initialized:

 // redis Initialize,  Jedispoolconfig is a Parameter object for Jedis, Redis is the object in Java encapsulation, and parameter information is read from the configuration file 

New Jedispoolconfig ();
Config.setmaxidle (Integer.parseint (businessservice.getinstance () getparameter("Maxidle"));
Config.setmaxtotal (Integer.parseint (businessservice.getinstance () getparameter("Maxtotal"));
Config.setminidle (Integer.parseint (businessservice.getinstance () getparameter("Minidle"));
Config.setlifo (Boolean.parseboolean ((Businessservice.getinstance () getparameter("Lifo")));
Config.setminevictableidletimemillis (Long.parselong (businessservice.getinstance () GetParameter(" Timemillis ")));

redisutils (config) is a tool class that is called once at initialization time to initialize the Jedis object.

New Redisutils (config);

3:redisutils class

 Publicredisutils (jedispoolconfig config) {        synchronized( This)        {            if(jediscluster==NULL) {Set<HostAndPort> jedisclusternodes =NewHashset(); Jedisclusternodes.add (NewHostandport (Businessservice.getinstance (). GetParameter ("Jedisa.host"), Integer.parseint ( Businessservice.getinstance (). GetParameter ("PortA")))); Jedisclusternodes.add (NewHostandport (Businessservice.getinstance (). GetParameter ("Jedisb.host"), Integer.parseint ( Businessservice.getinstance (). GetParameter ("PORTB")))); Jedisclusternodes.add (NewHostandport (Businessservice.getinstance (). GetParameter ("Jedisc.host"), Integer.parseint ( Businessservice.getinstance (). GetParameter ("PORTC")))); Jediscluster=NewJediscluster (jedisclusternodes,2000,2000, config); }        }                    }

4:jediscluster stored value

/**     *      * @authorWeishaolong * @date 2016-3-29 5:13:10 Input Parameters *@paramKey Key *@paramseconds effective Time unit seconds *@paramstrvalue Value*/     Public Static voidSetjedis (String Key,intseconds,string strvalue) {        Try        {Jediscluster.setex (Key,seconds,strvalue); }        Catch(Exception e) {log.error ("Redis stored value Exception!" By:RedisUtils.setJedis "+e.tostring ()); }            }

5:jediscluster value

 public  static   string Getjedisvalue (string key) {string Strjedisval  = null  ;  try   {  Strjedisval  =jediscluster.get (key);         return   Strjedisval;             catch   (Exception e) { Log.error ( "Redis value Exception!        By:RedisUtils.getJedisValue "+e.tostring ());             return   Strjedisval; }

6: In this way, the use of jediscluster can be used, Java business code directly Redisutils.getjedisvalue (""); you can get the value.

7 : Shardjedispool can also be used in clusters, but shardjedispool I have always reported

Jedis.exceptions.JedisMovedDataException:MOVED 632 192.168.0.192:6301, how to solve, for the moment I have not found a solution, Just know to change the 193redis server to 191 or 192 to solve

Initialization

List<jedisshardinfo> jdsinfolist =NewArraylist<jedisshardinfo> (3); Jedisshardinfo Infoa=NewJedisshardinfo (Businessservice.getinstance (). GetParameter ("Jedisa.host"), Integer.parseint (Businessservice.getinstance (). GetParameter ("PortA"))); Jedisshardinfo Infob=NewJedisshardinfo (Businessservice.getinstance (). GetParameter ("Jedisb.host"), Integer.parseint (Businessservice.getinstance (). GetParameter ("PORTB"))); Jedisshardinfo INFOC=NewJedisshardinfo (Businessservice.getinstance (). GetParameter ("Jedisc.host"), Integer.parseint (Businessservice.getinstance (). GetParameter ("PORTC")));         Jdsinfolist.add (INFOA);         Jdsinfolist.add (INFOB);         Jdsinfolist.add (INFOC); Shardjedispool=NewShardedjedispool (config, jdsinfolist);

Stored value:

 Public Static void Setjedis (String key,int  seconds,string strvalue)    {        try        {             Shardedjedis Shardjedis=shardjedispool.getresource ();            Shardjedis.setex (key,seconds,strvalue);            Shardjedispool.returnresourceobject (Shardjedis);                     }        catch(Exception e)        {            log.error ("Redis stored value Exception! By:RedisUtils.setJedis "+e.tostring ());        }            }

Value:

 Public Staticstring Getjedisvalue (String key) {string Strjedisval=NULL; Try{Shardedjedis Shardjedis=Shardjedispool.getresource (); Strjedisval=Shardjedis.get (key);            Shardjedispool.returnresourceobject (Shardjedis); returnStrjedisval; }        Catch(Exception e) {log.error ("Redis Value Exception!" By:RedisUtils.getJedisValue "+e.tostring ()); }        returnStrjedisval; }

Finally, one thing to note: Shardjedispool is a connection pool, and MySQL connection pool is very similar, each time you get the value from the pool, remember to return this connection to the pool

Shardjedispool.returnresourceobject (Redis);

Close the connection pool when the project is stopped

 Public Static void Closejedispool ()    {        if(shardjedispool!=null) {            Shardjedispool.destroy ();        }    }}

Well, the main is the code level of explanation, the principle of not how to say, later to add ....

The Redis cluster I encountered at work is used