关键词：动物园管理员；应用程序；分布式应用程序服务器；模拟；微型分布式环境
摘 要：Apache ZooKeeper is a high-performance coordination server for distributed applications. It exposes common services -- such as naming and configuration management, synchronization, and group services -- in a simple interface, relieving the user from the need to program from scratch. It comes with off-the-shelf support for implementing consensus, group management, leader election, and presence protocols. In this article, we will explore the fundamentals of ZooKeeper, then walk through a guide to set up and deploy a ZooKeeper cluster in a simulated miniature distributed environment. We will conclude with examples of how ZooKeeper is used in popular projects.