Redis of NoSQL (Jedis connection API)

Engineering construction:

(1) introduction: redis can be operated not only with commands, but also with client support in basically mainstream languages, such as java, C, C #, C++, php, Node.js, Go and so on.

Jedis is introduced here, address: https://github.com/xetorthio/jedis

(2) dependence:

If it is an ordinary project created: you need to add the jar package of the corresponding jedis.jar to the project.

If you are using maven, import the dependent dependency directly: https://mvnrepository.com/artifact/redis.clients/jedis

Redis.clients

Jedis

3.0.0

2.API

(1) single instance connects to redis

Public class JedisUtils {public void jedisClient () {/ * new Jedis (pars1,pars2); * pars1:hostname:String * port:int * / Jedis jedis=new Jedis ("hadoop03", 6379); / / assign jedis.set ("name", "zs") through redis; / / get the value String name=jedis.get ("name") through redis / / release resource jedis.close ();}}

(2) use jedis connection pool to connect to redis service

Public void jedisPoolClient () {/ * new JedisPool (pars1,pars2); * pars1:String, which can be written to a cluster such as redis01,redis03... * port:int port * / JedisPool pool=new JedisPool ("hadoop03", 6379); / obtain Jedis instance Jedis jedis=pool.getResource (); / / release resource jedis.close (); pool.close ();}