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  • Book Overview & Buying Mastering Web Application Development with Express
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Mastering Web Application Development with Express

Mastering Web Application Development with Express

By : Alexandru Vladutu
3.7 (3)
Buy this Book
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Mastering Web Application Development with Express

Mastering Web Application Development with Express

3.7 (3)
By: Alexandru Vladutu
Buy this Book

Overview of this book

If you are a Node.js developer who wants to take your Express skills to the next level and develop high performing, reliable web applications using best practices, this book is ideal for you. The only prerequisite is knowledge of Node.js.
Table of Contents (13 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Diving into Express
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1. Diving into Express
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The best parts of Express
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Comparing Express with other frameworks
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Use cases
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Express into the wild
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The application structure
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Summary
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2. Component Modularity Using Middleware
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2. Component Modularity Using Middleware
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Connecting middleware
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The functionality of middleware
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Creating configurable middleware
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Environment-based loading of middleware
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Express routes
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Ordering of middleware
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Handling errors with middleware
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Mounting subapplications
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Replicating the middleware system
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Summary
3
3. Creating RESTful APIs
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3. Creating RESTful APIs
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An overview of REST
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SmartNotes application requirements
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Creating RESTful URLs of the application
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Implementing the SmartNotes application
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API versioning
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API rate limiting
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Throttling
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Facilitating caching
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Content negotiation
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Summary
4
4. Leveraging the Power of Template Engines
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4. Leveraging the Power of Template Engines
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The different types of template engines
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View helpers and application-level data
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Sharing code between templates with partial views
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DRY templates with layouts
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Template engine consolidation with consolidate.js
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View caching in production
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Integrating a template engine with Express
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Choosing a template engine
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Summary
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5. Reusable Patterns for a DRY Code Base
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5. Reusable Patterns for a DRY Code Base
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Creating the MovieApp sample application
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Error checks and callback functions
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Tiny modules for better control flow
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Ensuring a single callback execution
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Extending objects in a reusable way
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A simple way to create custom errors
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Summary
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6. Error Handling
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6. Error Handling
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Runtime (operational) errors and human errors
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Ways of delivering errors in the Node applications
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Strings instead of errors as an antipattern
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Improving stack traces
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Handling uncaught exceptions
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Logging errors
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Creating a custom Express error handler
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Richer errors with VError
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Error handling in a practical application
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Summary
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7. Improving the Application's Performance
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7. Improving the Application's Performance
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Serving static resources with Express
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Backend improvements
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Summary
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8. Monitoring Live Applications
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8. Monitoring Live Applications
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Logging
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Simple tips for improving the application monitoring
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Collecting metrics
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Useful existing monitoring tools
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Ensuring the application uptime
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Summary
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9. Debugging
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9. Debugging
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A better error-handling middleware
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Using a debug flag
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Debugging routes and middleware
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Using the V8 debugger
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Debugging memory leaks
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Adding a REPL to our Express application
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Removing debugging commands
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Summary
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10. Application Security
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10. Application Security
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Running Express applications on privileged ports
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Cross-site request forgery protection
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Cross-site scripting
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HTTP security headers with Helmet
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Handling file uploads
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Session middleware parameters
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Reauthenticating the user for sensitive operations
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Summary
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11. Testing and Improving Code Quality
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11. Testing and Improving Code Quality
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The importance of having automated tests
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Testing toolbox
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Creating and testing an Express file-sharing application
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Running tests before committing in Git
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Code coverage
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Complexity analysis of our code
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Code linting
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Load testing
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Client-side testing
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Continuous Integration
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Summary
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Index
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Index

Preface

Express is a battle-tested web framework for Node.js, and is used in production in companies such as Paypal or MySpace. It has come a long way since its initial release back in 2009, with more than a hundred contributors and an active community of developers.

The simplicity of Express has even enabled people to build more complex applications on top of it, such as Kraken.js or Sails.js.

This book is aimed at developers who want to learn more about delivering real-world applications with Express 4 by taking advantage of the advanced features it provides and also benefiting from the great ecosystem of existing modules from NPM.

You will find a lot of practical examples along with different tips and tricks that will help you develop a better application at a faster pace. Even if you decide to use another framework in the future or create your own, the things you have learned here will be useful in the future.

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Tech Concepts
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Programming languages
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Mastering Web Application Development with Express
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