Node.js: Debugging and Performance Tuning

2h 45mIntermediate2018-07-13

Authors

Jon Peck

Software Architect, Engineer, Consultant, Trainer

Course details

Node.js apps are known for their blazing-fast speed, but hard-to-find bugs and suboptimal processes can drag performance down. Isolating the problem in the stack can often grind productivity to a halt. In this course, Node.js developer Jon Peck shows how to debug and speed up your site as he walks through how to fix a complete—but flawed—rock-paper-scissors game. Jon shows how to log problems, debug issues, measure performance, implement caching, and continuously optimize your application for performance.

Learning objectives
Building a troubleshooting mindset
Why measure performance?
What's a microservice architecture?
Managing microservices with PM2
Effective logging strategies
Debugging Node.js applications
Benchmarking performance
Profiling code execution
Knowing what to optimize

Skills covered

Express.jsData Resource ManagementNode.jsJavaScript FrameworksDatabase ManagementWeb DevelopmentOpen SourceDeep Dive (X:Y)

Concepts

0. Introduction

01 - The power of debugging and performance tuning
02 - What you should know
03 - Using challenges
04 - Configuring your development environment
05 - Demo application tour

1. Build a Troubleshooting Mindset

06 - Finding what went wrong
07 - Why measure performance
08 - Documenting problems
09 - When is a problem resolved

2. Introducing Microservices

10 - What's a microservice architecture
11 - Microservice rock, paper, scissors
12 - Introducing PM2 for process management
13 - Managing microservices with PM2

3. Effective Logging Strategies

14 - Why and what should I log
15 - Problems with Node.js console
16 - Implementing Express error pages
17 - Choosing a logging library
18 - Adding Winston for Node logging
19 - Request logging with Morgan
20 - Correlating requests in logs
21 - Cross-application request correlation
22 - Challenge - Cross-application request IDs
23 - Solution - Cross-application request IDs

4. Debugging Node.js Applications

24 - Debugging isn't just logging
25 - Introducing Node's built-in debugger
26 - Command-line debugging with Node inspect
27 - Debugging Node in Chrome DevTools
28 - Debugging Node with Visual Studio Code

5. Measuring Performance

29 - Benchmarking performance
30 - Benchmarking with ApacheBench
31 - Benchmarking code with Winston
32 - Profiling code execution

Conclusion

33 - Knowing what to optimize
34 - Caching fundamentals
35 - Next steps