Redis Connection Pool code in Java good performance

In fact, this is quoted from netizens http://blog.csdn.net/tuposky/article/details/45340183, there are 2 versions, the difference is reentrantlock and synchronized. In addition, the original person used the assertion, I think this is still not good.

Version Reentrantlock

Import Java.util.concurrent.locks.reentrantlock;import Org.apache.commons.lang.stringutils;import Org.apache.log4j.logger;import Redis.clients.jedis.jedis;import Redis.clients.jedis.jedispool;import redis.clients.jedis.jedispoolconfig;/** * Redis Tool class */public class Jedisutil {protected static Reentrantlock Lockpool    = new Reentrantlock ();    protected static Reentrantlock Lockjedis = new Reentrantlock ();    protected static Logger Logger = Logger.getlogger (Jedisutil.class);    Redis server IP private static String Addr_array = "xxx.xxx.xxx.xxx";    The port number of the Redis private static int port = 6379;    Access password private static String AUTH = "http://blog.csdn.net/unix21";    The maximum number of available connection instances, the default value is 8, and//If the assignment is 1, it is unrestricted, and if the pool is already assigned a maxactive Jedis instance, the state of the pool is exhausted (exhausted) at this time.    private static int max_active = 8;    Controls the maximum number of Jedis instances in a pool that have an idle (idle) state, and the default value is 8.    private static int max_idle = 8; The maximum time to wait for an available connection, in milliseconds, and the default value is-1, which means that never times out. If the wait time is exceeded, the jedisconnectionexception is thrown directly; private static int MAX_wait = 3000;    Timeout time private static int timeout = 10000;    Whether the validate operation is performed in advance when a Jedis instance is borrow, and if true, the resulting Jedis instance is available; private static Boolean test_on_borrow = false;    private static Jedispool Jedispool = null; /** * Redis expiration, in seconds */public final static int exrp_hour = 60 * 60;//one hour public final static int Exrp_day = 60 * 60 * 24;//Day public final static int exrp_month = 60 * 60 * 24 * 30;//one month/** * Initialize REDIS connection pool */pri            vate static void Initialpool () {try {jedispoolconfig config = new Jedispoolconfig ();            Config.setmaxtotal (max_active);            Config.setmaxidle (Max_idle);            Config.setmaxwaitmillis (max_wait);            Config.settestonborrow (Test_on_borrow);        Jedispool = new Jedispool (config, addr_array.split (",") [0], PORT, TIMEOUT, AUTH);            } catch (Exception e) {logger.error ("first create Jedispool Error:" + E);   try {//If first IP exception, access second IP             Jedispoolconfig config = new Jedispoolconfig ();                Config.setmaxtotal (max_active);                Config.setmaxidle (Max_idle);                Config.setmaxwaitmillis (max_wait);                Config.settestonborrow (Test_on_borrow);            Jedispool = new Jedispool (config, addr_array.split (",") [1], PORT, TIMEOUT, AUTH);            } catch (Exception E2) {logger.error ("Second Create Jedispool Error:" + E2);        }}}/** * Synchronous initialization in multithreaded environment */private static void Poolinit () {lockpool.lock ();            try {if (Jedispool = = null) {Initialpool ();        }} catch (Exception e) {e.printstacktrace ();        } finally {Lockpool.unlock ();        }} public static Jedis Getjedis () {lockjedis.lock ();        if (Jedispool = = null) {poolinit ();        } Jedis Jedis = null;   try {if (Jedispool! = null) {             Jedis = Jedispool.getresource ();        }} catch (Exception e) {logger.error ("Get Jedis Error:" + E);            } finally {Returnresource (Jedis);        Lockjedis.unlock ();    } return Jedis;        /** * Release Jedis resource * * @param Jedis */public static void Returnresource (final Jedis Jedis) {        if (Jedis! = NULL && Jedispool! = null) {Jedispool.returnresource (Jedis); }}/** * Set String * * @param key * @param value */public synchronized static void Setstrin g (String key, String value) {try {value = Stringutils.isempty (value)?            "": value;        Getjedis (). Set (key, value);        } catch (Exception e) {logger.error ("Set key error:" + E); }}/** * Set Expiration time * * @param key * @param seconds in seconds * @param value */Public Synchron ized static void SetString (String key, int secOnds, String value) {try {value = Stringutils.isempty (value)?            "": value;        Getjedis (). Setex (key, seconds, value);        } catch (Exception e) {logger.error ("Set Keyex Error:" + E); }}/** * Get string Value * * @param key * @return Value */public synchronized static string getst        Ring (String key) {if (Getjedis () = null | |!getjedis (). Exists (key)) {return null;    } return Getjedis (). get (key); }}

version Synchronized

Import Java.util.concurrent.locks.reentrantlock;import Org.apache.commons.lang.stringutils;import Org.apache.log4j.logger;import Redis.clients.jedis.jedis;import Redis.clients.jedis.jedispool;import redis.clients.jedis.jedispoolconfig;/** * Redis Tool class */public class Jedisutil {protected static Reentrantlock Lockpool    = new Reentrantlock ();    protected static Reentrantlock Lockjedis = new Reentrantlock ();    protected static Logger Logger = Logger.getlogger (Jedisutil.class);    Redis server IP private static String Addr_array = "xxx.xxx.xxx.xxx";    The port number of the Redis private static int port = 6379;    Access password private static String AUTH = "http://blog.csdn.net/unix21";    The maximum number of available connection instances, the default value is 8, and//If the assignment is 1, it is unrestricted, and if the pool is already assigned a maxactive Jedis instance, the state of the pool is exhausted (exhausted) at this time.    private static int max_active = 8;    Controls the maximum number of Jedis instances in a pool that have an idle (idle) state, and the default value is 8.    private static int max_idle = 8; The maximum time to wait for an available connection, in milliseconds, and the default value is-1, which means that never times out. If the wait time is exceeded, the jedisconnectionexception is thrown directly; private static int MAX_wait = 3000;    Timeout time private static int timeout = 10000;    Whether the validate operation is performed in advance when a Jedis instance is borrow, and if true, the resulting Jedis instance is available; private static Boolean test_on_borrow = false;    private static Jedispool Jedispool = null; /** * Redis expiration, in seconds */public final static int exrp_hour = 60 * 60;//one hour public final static int Exrp_day = 60 * 60 * 24;//Day public final static int exrp_month = 60 * 60 * 24 * 30;//one month/** * Initialize REDIS connection pool */pri            vate static void Initialpool () {try {jedispoolconfig config = new Jedispoolconfig ();            Config.setmaxtotal (max_active);            Config.setmaxidle (Max_idle);            Config.setmaxwaitmillis (max_wait);            Config.settestonborrow (Test_on_borrow);        Jedispool = new Jedispool (config, addr_array.split (",") [0], PORT, TIMEOUT, AUTH);            } catch (Exception e) {logger.error ("first create Jedispool Error:" + E);   try {//If first IP exception, access second IP             Jedispoolconfig config = new Jedispoolconfig ();                Config.setmaxtotal (max_active);                Config.setmaxidle (Max_idle);                Config.setmaxwaitmillis (max_wait);                Config.settestonborrow (Test_on_borrow);            Jedispool = new Jedispool (config, addr_array.split (",") [1], PORT, TIMEOUT, AUTH);            } catch (Exception E2) {logger.error ("Second Create Jedispool Error:" + E2);  }}}/** * Synchronous initialization in multithreaded environment */private static synchronized void Poolinit () {if (Jedispool = = null)        {Initialpool (); }}/** * Synchronize get Jedis instance * @return Jedis */public synchronized static Jedis Getjedis () {i        F (Jedispool = = null) {poolinit ();        } Jedis Jedis = null;             try {if (Jedispool! = null) {Jedis = Jedispool.getresource (); }} catch (Exception e) {logger.error ("GET Jedis error: "+e);        }finally{Returnresource (Jedis);    } return Jedis;        /** * Release Jedis resource * * @param Jedis */public static void Returnresource (final Jedis Jedis) {        if (Jedis! = NULL && Jedispool! = null) {Jedispool.returnresource (Jedis); }}/** * Set String * * @param key * @param value */public synchronized static void Setstrin g (String key, String value) {try {value = Stringutils.isempty (value)?            "": value;        Getjedis (). Set (key, value);        } catch (Exception e) {logger.error ("Set key error:" + E); }}/** * Set Expiration time * * @param key * @param seconds in seconds * @param value */Public Synchron ized static void SetString (string key, int seconds, string value) {try {value = stringutils.isempty (VA Lue)?            "": value;        Getjedis (). Setex (key, seconds, value); } catch (Exception e) {logger.error ("Set Keyex Error:" + E); }}/** * Get string Value * * @param key * @return Value */public synchronized static string getst        Ring (String key) {if (Getjedis () = null | |!getjedis (). Exists (key)) {return null;    } return Getjedis (). get (key); }}

Multithreading

public class Clientthread extends Thread {    int i = 0;    Public clientthread (int i) {        this.i = i;    }    public void Run () {        date date = new Date ();        DateFormat format = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");        String time = Format.format (date);        Jedisutil.setstring ("foo", time);        String foo = jedisutil.getstring ("foo");              System.out.println ("" Output >>>> "foo:" + foo + ":" +i+ "Threads" + "Current Time:" +dateutil.getnowtimestring ());}    }

Up to 10,000 threads

public static void Main (string[] args) {for                      (int i = 0; i < 10000; i++) {                      Clientthread t = new Clientthread (i) ;            T.start ();        }    }

Very stable operation:

In a stand-alone 4-core PC machine test down 10,000 data ran for 2 seconds , performance is good, no report abnormal.

The following is a bad situation, will report a variety of anomalies, this connection pool must be tested with multithreading, otherwise the line is OK, the line will occasionally problem:

Redis Connection Pool code in Java good performance