Engineering depth

Notes on systems designed for failure, concurrency and production load — with full case studies for architecture detail.

Distributed Rate Limiter

Atomic Redis Lua enforcement across tiers — anonymous k6 runs hit 99.47% 429s with 12.37ms p95 latency; pro-tier allowance tracks theoretical refill.

Engineering notes →

Distributed Task Queue

Stress-tested at 10,000 concurrent jobs with ~15,800 tasks/sec ingestion and 0% task loss under crash-recovery scenarios.

Engineering notes →

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