Apache ZooKeeper Essentials -- Table of Contents -- Apache ZooKeeper Essentials -- Credits -- About the Author -- About the Reviewers -- www.PacktPub.com -- Support files, eBooks, discount offers, and more -- Why subscribe? -- Free access for Packt account holders -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Downloading the example code -- Errata -- Piracy -- Questions -- 1. A Crash Course in Apache ZooKeeper -- Defining a distributed system -- Why coordination in a distributed system is so challenging -- Introducing Apache ZooKeeper -- Getting hands-on with Apache ZooKeeper -- Download and installation -- Downloading -- Installing -- Configuration -- Starting the ZooKeeper server -- Connecting to ZooKeeper with a Java-based shell -- Connecting to ZooKeeper with a C-based shell -- Setting up a multinode ZooKeeper cluster -- Starting the server instances -- Running multiple node modes for ZooKeeper -- Summary -- 2. Understanding the Inner Workings of Apache ZooKeeper -- A top-down view of the ZooKeeper service -- The ZooKeeper data model -- Types of znodes -- The persistent znode -- The ephemeral znode -- The sequential znode -- Keeping an eye on znode changes - ZooKeeper Watches -- The ZooKeeper operations -- Watches and ZooKeeper operations -- The ZooKeeper access control lists -- The ZooKeeper stat structure -- Understanding the inner working of ZooKeeper -- The quorum mode -- Client establishment of sessions with the ZooKeeper service -- Implementation of ZooKeeper transactions -- Phase 1 - leader election -- Phase 2 - atomic broadcast -- Local storage and snapshots -- Summary -- 3. Programming with Apache ZooKeeper -- Using the Java client library -- Preparing your development environment -- The first ZooKeeper program.

Implementing a Watcher interface -- Example - a cluster monitor -- The C client library -- Getting started with the C API -- Example - the znode data watcher -- Python client bindings -- A watcher implementation -- Summary -- 4. Performing Common Distributed System Tasks -- ZooKeeper recipes -- Barrier -- Queue -- Lock -- Leader election -- Group membership -- Two-phase commit -- Service discovery -- Summary -- 5. Administering Apache ZooKeeper -- Configuring a ZooKeeper server -- Minimum configuration -- Storage configuration -- Network configuration -- Configuring a ZooKeeper ensemble -- Configuring a quorum -- Quota and authorization -- ZooKeeper best practices -- Monitoring a ZooKeeper instance -- Four-letter words -- Java Management Extensions -- Summary -- 6. Decorating ZooKeeper with Apache Curator -- Curator components -- Curator client -- Curator framework -- Curator recipes -- Curator utilities -- Curator extensions -- Exhibitor -- Summary -- 7. ZooKeeper in Action -- Projects powered by ZooKeeper -- Apache BookKeeper -- Apache Hadoop -- Apache HBase -- Apache Helix -- OpenStack Nova -- Organizations powered by ZooKeeper -- Yahoo! -- Facebook -- eBay -- Twitter -- Netflix -- Zynga -- Nutanix -- VMware vSphere Storage Appliance -- Summary -- Index.