Redis Learning Notes (ii)

To connect the Redis cache steps via the Jedis client: 1. Add Jar Package:

POM Coordinates:

<dependency>

<groupId>redis.clients</groupId>

<artifactId>jedis</artifactId>

<version>2.7.0</version>

</dependency>

The jar package is as follows: Commons-pool2-2.3.jar Jedis-2.7.0.jar
2. Single Instance connection

To connect the Redis service by creating a single-instance Jedis object, the following code:

Single Instance connection Redis
	@Test public
	void Testjedissingle () {

		Jedis Jedis = new Jedis ("192.168.101.3", 6379);
		Jedis.set ("name", "Bar");
		String name = Jedis.get ("name");
		SYSTEM.OUT.PRINTLN (name);
		Jedis.close ();

	}

3. Connect using Connection Pool

Redis connections cannot be shared through single-instance connections, you can use connection pooling to share redis connections, increase resource utilization, and use Jedispool to connect to the Redis service with the following code:

	@Test public
	Void Pool () {
		jedispoolconfig config = new Jedispoolconfig ();
		Maximum number of connections
		config.setmaxtotal (+);
		Maximum connection idle number
		Config.setmaxidle (2);
		
		Jedispool pool = new Jedispool (config, "192.168.101.3", 6379);
		Jedis Jedis = null;

		Try  {
			Jedis = Pool.getresource ();
			
			Jedis.set ("name", "Lisi");
			String name = Jedis.get ("name");
			SYSTEM.OUT.PRINTLN (name);
		} catch (Exception ex) {
			ex.printstacktrace ();
		} finally{
			if (Jedis! = null) {
				//close connection
				jedis.close ()
			;
		
	}}}

4. Jedis and Spring Integration

Configure Spring configuration file Applicationcontext.xml

<!--connection Pool configuration-<bean id= "Jedispoolconfig" class= "Redis.clients.jedis.JedisPoolConfig" > <!--maximum number of connections--&gt
		; <property name= "Maxtotal" value= "$"/> <!--maximum idle connections--<property name= "Maxidle" value= "ten"/> &L t;! --Maximum number of connections per release--<property name= "Numtestsperevictionrun" value= "1024x768"/> <!--release connection scanning interval (ms)--&LT ;p roperty name= "Timebetweenevictionrunsmillis" value= "30000"/> <!--connection min idle time-<property name= "minevict Ableidletimemillis "value=" 1800000 "/> <!--how long the connection is idle and released when idle time > This value and idle connections > maximum idle Connections is released directly--<property n Ame= "Softminevictableidletimemillis" value= "10000"/> <!--maximum wait milliseconds to get a connection, less than 0: block indeterminate time, Default-1--<property Name= "Maxwaitmillis" value= "/>" <!--check validity when getting a connection, default false--<property name= "Testonborrow" value= " True "/> <!--check validity on idle, default false--<property name=" Testwhileidle "value=" true "/> < whether blocking when!--connection is exhausted , false to report abnormal, Ture blocked untilTimeout, default true--<property name= "blockwhenexhausted" value= "false"/> </bean> <!--Redis Standalone via connection pooling--&
	Gt <bean id= "Jedispool" class= "Redis.clients.jedis.JedisPool" destroy-method= "Close" > <constructor-arg index= "0" ref= "jedispoolconfig" ></constructor-arg> <constructor-arg index= "1" value= "192.168.101.3" ></ Constructor-arg> <constructor-arg index= "2" value= "7001" ></constructor-arg> </bean>

Test code:

Private ApplicationContext ApplicationContext;

	@Before public
	void init () {
		applicationcontext = new Classpathxmlapplicationcontext (
				"classpath: Applicationcontext.xml ");
	}

	@Test public
	void Testjedispool () {
	Jedispool pool = (jedispool) applicationcontext.getbean ("Jedispool");
			Try  {
			Jedis = Pool.getresource ();
			
			Jedis.set ("name", "Lisi");
			String name = Jedis.get ("name");
			SYSTEM.OUT.PRINTLN (name);
		} catch (Exception ex) {
			ex.printstacktrace ();
		} finally{
			if (Jedis! = null) {
				//close connection
				jedis.close ()
			;
	}}}