Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Mastering Web Application Development with Express
  • Table Of Contents Toc
Mastering Web Application Development with Express

Mastering Web Application Development with Express

By : Alexandru Vladutu
3.7 (3)
Buy this Book
close
close
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)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. Diving into Express
Icon
1. Diving into Express
Icon
The best parts of Express
Icon
Comparing Express with other frameworks
Icon
Use cases
Icon
Express into the wild
Icon
The application structure
Icon
Summary
2
2. Component Modularity Using Middleware
Icon
2. Component Modularity Using Middleware
Icon
Connecting middleware
Icon
The functionality of middleware
Icon
Creating configurable middleware
Icon
Environment-based loading of middleware
Icon
Express routes
Icon
Ordering of middleware
Icon
Handling errors with middleware
Icon
Mounting subapplications
Icon
Replicating the middleware system
Icon
Summary
3
3. Creating RESTful APIs
Icon
3. Creating RESTful APIs
Icon
An overview of REST
Icon
SmartNotes application requirements
Icon
Creating RESTful URLs of the application
Icon
Implementing the SmartNotes application
Icon
API versioning
Icon
API rate limiting
Icon
Throttling
Icon
Facilitating caching
Icon
Content negotiation
Icon
Summary
4
4. Leveraging the Power of Template Engines
Icon
4. Leveraging the Power of Template Engines
Icon
The different types of template engines
Icon
View helpers and application-level data
Icon
Sharing code between templates with partial views
Icon
DRY templates with layouts
Icon
Template engine consolidation with consolidate.js
Icon
View caching in production
Icon
Integrating a template engine with Express
Icon
Choosing a template engine
Icon
Summary
5
5. Reusable Patterns for a DRY Code Base
Icon
5. Reusable Patterns for a DRY Code Base
Icon
Creating the MovieApp sample application
Icon
Error checks and callback functions
Icon
Tiny modules for better control flow
Icon
Ensuring a single callback execution
Icon
Extending objects in a reusable way
Icon
A simple way to create custom errors
Icon
Summary
6
6. Error Handling
chevron up
Icon
6. Error Handling
Icon
Runtime (operational) errors and human errors
Icon
Ways of delivering errors in the Node applications
Icon
Strings instead of errors as an antipattern
Icon
Improving stack traces
Icon
Handling uncaught exceptions
Icon
Logging errors
Icon
Creating a custom Express error handler
Icon
Richer errors with VError
Icon
Error handling in a practical application
Icon
Summary
7
7. Improving the Application's Performance
Icon
7. Improving the Application's Performance
Icon
Serving static resources with Express
Icon
Backend improvements
Icon
Summary
8
8. Monitoring Live Applications
Icon
8. Monitoring Live Applications
Icon
Logging
Icon
Simple tips for improving the application monitoring
Icon
Collecting metrics
Icon
Useful existing monitoring tools
Icon
Ensuring the application uptime
Icon
Summary
9
9. Debugging
Icon
9. Debugging
Icon
A better error-handling middleware
Icon
Using a debug flag
Icon
Debugging routes and middleware
Icon
Using the V8 debugger
Icon
Debugging memory leaks
Icon
Adding a REPL to our Express application
Icon
Removing debugging commands
Icon
Summary
10
10. Application Security
Icon
10. Application Security
Icon
Running Express applications on privileged ports
Icon
Cross-site request forgery protection
Icon
Cross-site scripting
Icon
HTTP security headers with Helmet
Icon
Handling file uploads
Icon
Session middleware parameters
Icon
Reauthenticating the user for sensitive operations
Icon
Summary
11
11. Testing and Improving Code Quality
Icon
11. Testing and Improving Code Quality
Icon
The importance of having automated tests
Icon
Testing toolbox
Icon
Creating and testing an Express file-sharing application
Icon
Running tests before committing in Git
Icon
Code coverage
Icon
Complexity analysis of our code
Icon
Code linting
Icon
Load testing
Icon
Client-side testing
Icon
Continuous Integration
Icon
Summary
12
Index
Icon
Index

Chapter 6. Error Handling

In this chapter, we will learn how to handle errors in the Express applications. More specifically, the following topics will be covered:

  • Error categories—runtime and programmer errors
  • Synchronous, asynchronous, and eventful errors
  • Writing a custom Express error handler
  • Return errors, not strings
  • Handling uncaught exceptions
  • Longer stack traces

Most of these topics not only apply to the Express applications but also to the Node applications in general, so try not to skim through this chapter. To make it more interesting, we will be creating a Wall microblogging application (from scratch), where people can publish posts and be notified in real time about the updates.

Visually different images
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Mastering Web Application Development with Express
End of Section 6
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon