Spring and redis correctly obtain the Jedis instance from jedisConnectionFactory, redisjedis

Spring and redis correctly obtain the Jedis instance from jedisConnectionFactory, redisjedis

This example of spring combined with redis is circulating on the Internet to obtain a Jedis instance from jedisConnectionFactory. Others ignore the RedisService only, so there are many problems in obtaining the jedis instance.
In this way, the connection is not closed every time a new connection is created. When there are a lot of operations, redis connections will soon be fully occupied. Redis connection error is reported.

Package com. mkfree. redis. test; import java. util. set; import org. springframework. beans. factory. annotation. autowired; import org. springframework. beans. factory. annotation. qualifier; import org. springframework. data. redis. connection. jedis. jedisConnectionFactory; import redis. clients. jedis. jedis;/*** encapsulate the redis Cache Server Service Interface * @ author hk ** 3:09:18 a.m. on February 16, */public class RedisService {/*** Delete (byte) through key) * @ param key */public void del (byte [] key) {this. getJedis (). del (key);}/*** Delete @ param key */public void del (String key) {this. getJedis (). del (key);}/*** add key value and set the survival time (byte) * @ param key * @ param value * @ param liveTime */public void set (byte [] key, byte [] value, int liveTime) {this. set (key, value); this. getJedis (). expire (key, liveTime);}/*** add key value and set the survival time * @ param key * @ param value * @ param liveTime */public void set (String key, string value, int liveTime) {this. set (key, value); this. getJedis (). expire (key, liveTime);}/*** add key value * @ param key * @ param value */public void set (String key, String value) {this. getJedis (). set (key, value);}/** add key value (byte) (serialization) * @ param key * @ param value */public void set (byte [] key, byte [] value) {this. getJedis (). set (key, value);}/*** get redis value (String) * @ param key * @ return */public String get (String key) {String value = this. getJedis (). get (key); return value;}/*** get redis value (byte []) (deserialization) * @ param key * @ return */public byte [] get (byte [] key) {return this. getJedis (). get (key);}/*** match keys through regular expressions * @ param pattern * @ return */public Set <String> keys (String pattern) {return this. getJedis (). keys (pattern);}/*** check whether the key already exists * @ param key * @ return */public boolean exists (String key) {return this. getJedis (). exists (key);}/*** clear all redis data * @ return */public String flushDB () {return this. getJedis (). flushDB ();}/*** check the data in redis */public long dbSize () {return this. getJedis (). dbSize ();}/*** check whether the connection is successful * @ return */public String ping () {return this. getJedis (). ping ();}/*** get a jedis client * @ return */private Jedis getJedis () {if (jedis = null) {return jedisConnectionFactory. getShardInfo (). createResource () ;}return jedis;} private RedisService () {}// operate the redis Client private static Jedis jedis; @ Autowired @ Qualifier ("jedisConnectionFactory") private JedisConnectionFactory jedisConnectionFactory ;}

There is no application connection pool. If we want to obtain the Jedis instance from jedisConnectionFactory, we want to use the connection pool. You can do this:

private Jedis getJedis() {if (jedis == null) {            jedisConnection = jedisConnectionFactory.getConnection();            jedis = jedisConnection.getNativeConnection();return jedis;}return jedis;}

In this way, the Jedis instance is managed by the connection pool. However, after each operation, the connection must be released and put back into the connection pool. JedisConnection. close (); this close is not actually closed, but the connection is put back into the connection pool.