Get Apache ZooKeeper Essentials PDF

By Saurav Haloi

ISBN-10: 1784391328

ISBN-13: 9781784391324

A fast moving consultant to utilizing Apache ZooKeeper to coordinate prone in disbursed systems

About This Book

  • Learn the fundamentals of Apache ZooKeeper with a finished exam of its internals and administration
  • Explore the ZooKeeper API version and methods to advance purposes utilizing ZooKeeper in C, Java, and Python for universal disbursed coordination tasks
  • See how ZooKeeper is utilized in real-world functions and providers to hold out complicated disbursed coordination tasks

Who This ebook Is For

Whether you're a beginner to ZooKeeper or have already got a few adventure, it is possible for you to to grasp the strategies of ZooKeeper and its utilization with ease.

This booklet assumes you to have a few past wisdom of dispensed platforms and high-level programming wisdom of C, Java, or Python, yet no adventure with Apache ZooKeeper is required.

In Detail

Apache ZooKeeper offers an easy interface to a centralized coordinating carrier for disbursed purposes via a wealthy set of APIs and primitives, permitting builders to pay attention to the center good judgment in their functions. With ZooKeeper, it is pointless to begin from scratch, so the advance of dispensed purposes turns into cleanser and easier.

Starting with tips on how to set up, configure, and start with ZooKeeper, we are going to study the intricacies of ZooKeeper's structure and internals. subsequent, you will study ZooKeeper's programming version and write code to resolve universal dispensed coordination projects. we are going to additionally stroll you thru administering ZooKeeper in a creation atmosphere, prior to ultimately protecting useful examples of real-world tasks and prone utilizing ZooKeeper to unravel complicated daily problems.

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Extra resources for Apache ZooKeeper Essentials

Example text

For example, the whole notion of ephemeral znodes is based on the concept of sessions between the client and the ZooKeeper server. Ephemeral znodes have the lifetime of a session being active between a client and ZooKeeper; when this session ends, these nodes are automatically deleted by the ZooKeeper service. A session has a timeout period, which is specified by the application or the client while connecting to the ZooKeeper service. The client sends a requested timeout as a parameter in the create connection call to create a ZooKeeper, which is specified in milliseconds.

This chapter provided details on installing and configuring a ZooKeeper in various modes, such as standalone, clustered, and also talked about how to connect to a ZooKeeper service from the command line with the ZooKeeper shell. In the next chapter, you will learn about the internals and architecture of Apache ZooKeeper. You will learn in detail about the ZooKeeper data model and the API interfaces exposed by the ZooKeeper service. The concepts introduced in the next chapter will help you master the design semantics of ZooKeeper and equip readers with confidence in using ZooKeeper in their distributed applications.

Create a znode called root with ThisIsTheRootNode as its data: [zk: localhost(CONNECTED) 0] create /root "ThisIsTheRootNode" Created /root 2. Get the content of the just created znode root: [zk: localhost(CONNECTED) 1] get /root "ThisIsTheRootNode" …… …… …… …… [ 37 ] Understanding the Inner Workings of Apache ZooKeeper 3. Create a child znode child-1 for root with ThisIsChild-1 as its data: [zk: localhost(CONNECTED) 2] create /root/child-1 "ThisIsChild-1" Created /root/child-1 4. Create a child znode child-2 for root with ThisIsChild-2 as its data: [zk: localhost(CONNECTED) 3] create /root/child-2 "ThisIsChild-2" Created /root/child-2 5.

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Apache ZooKeeper Essentials by Saurav Haloi

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