How to use JedisCluster effectively - redis

Question

I am new to Redis and I am using Redis Java Client to work with Redis cluster.
I have following code:
public class HelloRedisCluster {
public static void main(String[] args) {
Set<HostAndPort> nodes = new HashSet<HostAndPort>();
nodes.add(new HostAndPort("127.0.0.1", 6001));
nodes.add(new HostAndPort("127.0.0.1", 6002));
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(10000);
config.setMaxIdle(500);
JedisCluster cluster = new JedisCluster(nodes);
cluster.set("abc", "123");
System.out.println(cluster.get("abc"));
cluster.close();
}
}
In the above code, it simply opens the cluster, set/get with Redis, and then close the cluster.
If the code is running as a service(eg in Servlet), then it will frequently open and close cluster, which would cause bad performance.
I would ask how to use JedisCluster effectively?
Thanks!

Answer 1

I have figured out the way that JedisCluster works. Internally, it has already used Jedis Pool.
The operations that JedisCluster provides follow the same pattern, take set for example:
1. Borrow a Jedis object from Jedis Pool
2. Call Jedis#set method
3. Release the Jedis object back to the pool.
So that, we can hold a JedisCluster instance in a Singleton object, and then close JedisCluster object when JVM exits, with following code:
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPoolConfig;
import java.util.HashSet;
import java.util.Set;
public class JedisClusterUtil {
private static JedisCluster cluster;
static {
Set<HostAndPort> nodes = new HashSet<HostAndPort>();
nodes.add(new HostAndPort("127.0.0.1", 6001));
nodes.add(new HostAndPort("127.0.0.1", 6002));
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(10000);
config.setMaxIdle(500);
cluster = new JedisCluster(nodes, config);
Runtime.getRuntime().addShutdownHook(new Thread() {
#Override
public void run() {
if (cluster != null) {
cluster.close();
}
}
});
}
public static JedisCluster getCluster() {
return cluster;
}
}