courator - create

0. retry policy

RetryPolicy retryPolicy  = new ExponentialBackoffRetry(3000,3);

1. client

1) recipes

• org.apache.curator.framework.recipes.leader.LeaderSelector
• org.apache.curator.framework.recipes.cache.TreeCache
• org.apache.curator.framework.recipes.cache.PathChildrenCache
• org.apache.curator.x.discovery.ServiceDiscovery

2) CuratorFramework

• org.apache.curator.framework.CuratorFramework

(curator-framework\src\main\java\org\apache\curator\framework\CuratorFramework.java)

2.create

curator-framework\src\main\java\org\apache\curator\framework
CuratorFrameworkFactory.java

1) simple

default:

CuratorFramework newClient(String connectString, RetryPolicy retryPolicy);

client.newClient("tdtc101:2181, tdtc102:2181, tdtc103:2181", retryPolicy);

advanced:

CuratorFramework newClient(String connectString, int sessionTimeoutMs, int connectionTimeoutMs, RetryPolicy retryPolicy);

client.newClient("tdtc101:2181, tdtc102:2181, tdtc103:2181", 60 * 1000, 15 * 1000, retryPolicy);

2) Fluent style

default:

client = CuratorFrameworkFactory.builder()
        .connectString("tdtc101:2181, tdtc102:2181, tdtc103:2181")
        .retryPolicy(retryPolicy)
        .build();

advanced:

client = CuratorFrameworkFactory.builder()
        .connectString("tdtc101:2181, tdtc102:2181, tdtc103:2181")
        .sessionTimeoutMs(60 * 1000)    // CuratorFrameworkFactory.java Ln61
        .connectionTimeoutMs(15 * 1000) // CuratorFrameworkFactory.java Ln62
        .retryPolicy(retryPolicy)
        .build();

3. start

client.start();