[NEW EXAMPLE] ZooKeeper - Client connection

[ainzzorl]

General

• Project name: ZooKeeper
• Example name: Managing the socket i/o for the client in ZooKeeper.
• Project home page: https://github.com/apache/zookeeper
• Programming language(s): Java
• Frameworks, libraries used: N/A

Description

ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

ZooKeeper has a smart client that:

• maintains a list of available servers to connect to and "transparently" switches servers it is connected to as needed.
• does smart error handling.
• generates heart beats.
• has an event loop.

Links

https://github.com/apache/zookeeper/blob/c583a6e79654359b5daad5093d1730e370d3b75b/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxn.java

Tests: https://github.com/apache/zookeeper/blob/c583a6e79654359b5daad5093d1730e370d3b75b/zookeeper-server/src/test/java/org/apache/zookeeper/ClientRequestTimeoutTest.java https://github.com/apache/zookeeper/blob/c583a6e79654359b5daad5093d1730e370d3b75b/zookeeper-server/src/test/java/org/apache/zookeeper/ClientReconnectTest.java https://github.com/apache/zookeeper/blob/c583a6e79654359b5daad5093d1730e370d3b75b/zookeeper-server/src/test/java/org/apache/zookeeper/ClientCnxnSocketFragilityTest.java

What makes it interesting

• Smart client.
• Non-trivial error handling.
• Event loop.

Related work

No.

Other

N/A

[ainzzorl]

This is interesting, but too complex. Moving it to cooldown for the time being.