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

The Zookeeper Reference Manual provides beginners with a simple introduction to the basics, and experts will find advanced details they need.

In this you will see the following things below.

ZooKeeper Overview
Overview
Getting Started
Release Notes

Developers
Programmer's Guide
ZooKeeper Java Example
Barrier and Queue Tutorial
ZooKeeper Recipes

Administrators & Operators
Administrator's Guide
Quota Guide
JMX
Hierarchical quorums
Observers
Dynamic Reconfiguration

Contributors
ZooKeeper Internals



You will find all this section offline without any internet connection and learn Zookeeper easily anywhere and anytime.