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JavaScript at Scale

By : Adam Boduch

4.5 (2)

JavaScript at Scale

4.5 (2)

By: Adam Boduch

Overview of this book

Have you ever come up against an application that felt like it was built on sand? Maybe you've been tasked with creating an application that needs to last longer than a year before a complete re-write? If so, JavaScript at Scale is your missing documentation for maintaining scalable architectures. There's no prerequisite framework knowledge required for this book, however, most concepts presented throughout are adaptations of components found in frameworks such as Backbone, AngularJS, or Ember. All code examples are presented using ECMAScript 6 syntax, to make sure your applications are ready for next generation browsers.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Scale from a JavaScript Perspective

1. Scale from a JavaScript Perspective

Scaling influencers

Architectural perspectives

The browser is a unique environment

Making architectural trade-offs

Frameworks versus libraries

Summary

2. Influencers of Scale

2. Influencers of Scale

Scaling users

Scaling features

Scaling development

Influencer checklist

Summary

3. Component Composition

3. Component Composition

Generic component types

Extending generic components

Mapping features to components

Decomposing components

Pluggable business logic

Organizing component code

Summary

4. Component Communication and Responsibilities

4. Component Communication and Responsibilities

Communication models

Communication data schema

Traceable component communication

Communication overhead

Areas of communication responsibility

Loosely-coupled communication

Component layers

Summary

5. Addressability and Navigation

5. Addressability and Navigation

Approaches to routing

How routers work

URI parts and patterns

Mapping resources to URIs

Triggering routes

Router configuration

Troubleshooting routers

Summary

6. User Preferences and Defaults

6. User Preferences and Defaults

Preference types

Supporting locales

Setting the locale

Generic component configuration

Configuring behavior

Changing the look and feel

Performance implications

Summary

7. Load Time and Responsiveness

7. Load Time and Responsiveness

Component artifacts

Loading components

Communication bottlenecks

Component optimization

API data

Optimizing components at runtime

Summary

8. Portability and Testing

8. Portability and Testing

Decoupling the backend

Feature design process

Unit testing tools

Testing mock scenarios

End-to-end tests and continuous integration

Summary

9. Scaling Down

9. Scaling Down

Scaling constraints

Conflicting features

Design failures

Application composition

Summary

10. Coping with Failure

10. Coping with Failure

Failing fast

Fault tolerance

Failure recovery

Performance and complexity

Logging and debugging

Improving the architecture

Summary

Index

Index

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Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: " For example, users/31729. Here, the router will need to find a pattern that matches this string, and the pattern will also specify how to extract the 31729 variable."

A block of code is set as follows:

// Renders the sections of the view. Each section
    // either has a renderer, or it doesn't. Either way,
    // content is returned.
    render() {

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.

Visually different images

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83

Tech Concepts

36

Programming languages

73

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