Code review antipatterns that slow teams down, with concrete pull request examples, review-risk signals, comment patterns, and a practical checklist for faster, higher-signal reviews.
How to detect and fix the N+1 query problem in ORMs with query counts, SQL traces, eager loading, batched IN queries, request-scoped loaders, and production rollout checks.
How excessive production logging can bury signal, increase cardinality, distort incident timelines, and make debugging slower even when every service appears well instrumented.
Tests can pass while production still breaks when the suite proves the intended path but misses retries, concurrency, dirty data, rollout state, or ambiguous dependency behavior.