Blue-green, canary, rolling updates, feature flags — every technique explained with real failure stories, rollback strategies, and the database migration patterns that make or break them.
Traces, metrics, logs — the three pillars and the fourth nobody talks about: profiling. How to instrument distributed systems so you can debug them when they fail at 3am.
First-hand experiences and hard lessons from scaling a platform from zero to millions of users — what the textbooks don't tell you.
Moving beyond metaphor — quantifying the real impact of technical debt on velocity, morale, and business outcomes with concrete measurement strategies.