Chaos Engineering: Fault Injection and Resiliency Testing

How do you know your systems will survive a major real-world outage? Instead of waiting for disaster to strike, modern engineering teams proactively inject failures to uncover hidden weaknesses before they impact users. This text-only course provides a clear, step-by-step introduction to the core concepts of chaos engineering and fault injection. You will transition from understanding theoretical system reliability to designing and running structured failure experiments. Through clear written explanations, you will learn how to safely test your architecture under stress and build systems that heal themselves. What you will learn: Understand the core principles of chaos engineering and the concept of a steady state; Define safety boundaries and minimize the blast radius of your failure experiments; Inject simulated network latency, resource exhaustion, and service dependency failures; Monitor system behavior and recovery patterns using modern observability and telemetry concepts; Plan and coordinate structured game days to test both technical infrastructure and team response; Integrate automated resiliency testing into continuous workflows. This course begins with foundational terminology, defining the difference between fault injection and chaos testing, before moving on to practical experiment design and modern tooling concepts. It is designed for software developers, system administrators, and aspiring Site Reliability Engineers (SREs) who want to build highly durable applications. No prior experience with resiliency testing is required. Start reading today to master the art of controlled failure and build systems that never sleep.