SRE
Most teams write tests to verify features work. SRE teams write tests to verify that reliability commitments are met. The difference isn't philosophical — it produces a fundamentally different kind of test suite that catches a different class of failures. SLO-driven testing means your SLOs are the spec,
SRE
An error budget is the maximum amount of unreliability your SLO allows. For a 99.9% availability SLO over 30 days, your error budget is 0.1% of requests — about 43.8 minutes of total downtime. The error budget is only useful if you actually track it, enforce it, and
SRE
Distributed systems fail in ways that single-process systems don't. A network timeout doesn't crash your process — it makes your thread hang. A slow dependency doesn't just slow one request — it can exhaust your connection pool and bring down the whole service. Retries, timeouts,
SRE
Chaos engineering is the practice of intentionally breaking production systems to find weaknesses before they find you. Done wrong, it's just causing outages on purpose. Done right, it's a systematic method for building confidence in your system's resilience. The difference between chaos that helps
Chaos Engineering
Chaos engineering without SLOs is just breaking things. You inject failures, watch dashboards, and write post-mortems. Chaos engineering with SLOs is different — it's a structured way to answer a specific question: "Does my system maintain its reliability commitments under real-world failure conditions?" This guide
Chaos Engineering
Steadybit is a reliability testing platform that combines chaos engineering with automated discovery of your system topology.