jedis针对三种redis工作模式的连接方式

港控/mmm° 2022-06-02 08:48 205阅读 0赞

这里说的三种工作模式是指：

1、单机模式

2、分片模式

3、集群模式（since 3.0）

说明图详见以下：

![100026_MiB1_2358114.png][]

使用jedis连接模式一：

//初始化连接 private Jedis jedis=new Jedis("192.168.0.100", 6379); jedis.set("a","b"); jedis.hmset(key, hash); ……

使用jedis连接模式二：

GenericObjectPoolConfig config=new GenericObjectPoolConfig();         config.setMaxIdle(32);          config.setMinIdle(12);         config.setTestOnBorrow(true);          config.setTestOnReturn(rtrue);         config.setTestWhileIdle(true);         List<JedisShardInfo> shards = new ArrayList<JedisShardInfo>();          for (int i = 0; i < shareds.size(); i++) {          shards.add(new JedisShardInfo("192.168.0.100", 6379, 200));  }         // 构造池          ShardedJedisPool shardedJedisPool= new ShardedJedisPool(config, shards);         ShardedJedis jedis=shardedJedisPool.getResource();         jedis.set("a","b");         jedis.hmset(key, hash);         ……

使用jedis连接模式三：

Set<HostAndPort> jedisClusterNodes = new HashSet<HostAndPort>(); for (int i = 0; i < shareds.size(); i++) { jedisClusterNodes.add(new HostAndPort("192.168.0.100",6379)); } // 构造池 BinaryJedisCluster cluster= new BinaryJedisCluster(jedisClusterNodes); cluster.set("a","b");                 cluster.hmset(key, hash);                 ……

BinaryJedisCluster.java是为了让jedis支持byte数组形式value重写的一个类，参考网上文档，记不得来源了。以下是代码（部分）：

public class BinaryJedisCluster extends JedisCluster {     public String set(final String key, final byte[] value) {         return new JedisClusterCommand<String>(connectionHandler, timeout,                 maxRedirections) {             public String execute(Jedis connection) {                 return connection.set(SafeEncoder.encode(key), value);             }         }.run(key);     }     public byte[] getBytes(final String key) {         return new JedisClusterCommand<byte[]>(connectionHandler, timeout,                 maxRedirections) {             public byte[] execute(Jedis connection) {                 return connection.get(SafeEncoder.encode(key));             }         }.run(key);     }     public Set<byte[]> zrevrangeByScoreBytes(final String key, final double max,                                         final double min, final int offset, final int count) {         return new JedisClusterCommand<Set<byte[]>>(connectionHandler, timeout,                 maxRedirections) {             public Set<byte[]> execute(Jedis connection) {                 return connection.zrevrangeByScore(SafeEncoder.encode(key),                         max, min, offset, count);             }         }.run(key);     }     public Set<byte[]> zrevrangeByScoreBytes(final String key, final String max,                                         final String min, final int offset, final int count) {         return new JedisClusterCommand<Set<byte[]>>(connectionHandler, timeout,                 maxRedirections) {             public Set<byte[]> execute(Jedis connection) {                 return connection.zrevrangeByScore(SafeEncoder.encode(key),                         SafeEncoder.encode(max), SafeEncoder.encode(min), offset, count);             }         }.run(key);     }     public Long linsert(final String key, final LIST_POSITION where,                         final byte[] pivot, final byte[] value) {         return new JedisClusterCommand<Long>(connectionHandler, timeout,                 maxRedirections) {             public Long execute(Jedis connection) {                 return connection.linsert(SafeEncoder.encode(key), where,                         pivot, value);             }         }.run(key);     }     public Long lpushx(final String key, final byte[]... string) {         return new JedisClusterCommand<Long>(connectionHandler, timeout,                 maxRedirections) {             public Long execute(Jedis connection) {                 return connection.lpushx(SafeEncoder.encode(key), string);             }         }.run(key);     }     public Long rpushx(final String key, final byte[]... string) {         return new JedisClusterCommand<Long>(connectionHandler, timeout,                 maxRedirections) {             public Long execute(Jedis connection) {                 return connection.rpushx(SafeEncoder.encode(key), string);             }         }.run(key);     }     public List<byte[]> blpopBytes(final String arg) {         return new JedisClusterCommand<List<byte[]>>(connectionHandler,                 timeout, maxRedirections) {             public List<byte[]> execute(Jedis connection) {                 return connection.blpop(SafeEncoder.encode(arg));             }         }.run(null);     }     public List<byte[]> brpopBytes(final String arg) {         return new JedisClusterCommand<List<byte[]>>(connectionHandler,                 timeout, maxRedirections) {             public List<byte[]> execute(Jedis connection) {                 return connection.brpop(SafeEncoder.encode(arg));             }         }.run(null);     } }

编译后jedis jar包下载地址：[http://pan.baidu.com/s/1mgIPYDa][http_pan.baidu.com_s_1mgIPYDa]

源码地址：http://pan.baidu.com/s/1jGIobBo

[100026_MiB1_2358114.png]: /images/20220602/0bf6e86b8bb9475ea53d0e86fde107a2.png
[http_pan.baidu.com_s_1mgIPYDa]: http://pan.baidu.com/s/1mgIPYDa