Chaos Engineering

4 Database trouble and testing in production

This chapter covers

• Designing chaos experiments for open source software
• Adding network latency by using Traffic Control
• Understanding when testing in production might make sense and how to approach it

In this chapter, you will apply everything you’ve learned about chaos engineering so far in a real-world example of a common application you might be familiar with. Have you heard of WordPress? It’s a popular blogging engine and content management system. According to some estimates, WordPress accounts for more than a third of all pages on the internet, and for most CMS-backed websites (http://mng.bz/e58Q). It’s typically paired with a MySQL database, another popular piece of technology.

Let’s take ...