Book Image

JavaScript and JSON Essentials - Second Edition

By : Bruno Joseph D'mello, Sai S Sriparasa
Book Image

JavaScript and JSON Essentials - Second Edition

By: Bruno Joseph D'mello, Sai S Sriparasa

Overview of this book

JSON is an established and standard format used to exchange data. This book shows how JSON plays different roles in full web development through examples. By the end of this book, you'll have a new perspective on providing solutions for your applications and handling their complexities. After establishing a strong basic foundation with JSON, you'll learn to build frontend apps by creating a carousel. Next, you'll learn to implement JSON with Angular 5, Node.js, template embedding, and composer.json in PHP. This book will also help you implement Hapi.js (known for its JSON-configurable architecture) for server-side scripting. You'll learn to implement JSON for real-time apps using Kafka, as well as how to implement JSON for a task runner, and for MongoDB BSON storage. The book ends with some case studies on JSON formats to help you sharpen your creativity by exploring futuristic JSON implementations. By the end of the book, you'll be up and running with all the essential features of JSON and JavaScript and able to build fast, scalable, and efficient web applications.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Better compressions with messagePack


There is one more data exchange format which is more space efficient than all those that we've covered so far. It provides binary serialization and is designed for fast in-memory manipulations. Many renowned sites, such as Pinterest, use messagePack for the compression of data.

Consider a scenario where we have to cache some data in primary cache storage, such as redis. In such a case, everytime a developer needs to store data—which can be JSON, an array, or any other data type—into a single string associated with a key (as in redis, where the data store is key-value pair with single-level depth), the memory utilization increases relative to the data inserted. messagePack can help to reduce the memory utilization. If we encode data using messagePack, it results in around 40% lossless compression. Isn't that better?

Another application, as suggested by the author of messagePack, is the cross-service RPC communication protocol. This could be a scenario where...