Tech Lead with 9 years of experience designing distributed systems in Golang on AWS. I write system design postmortems that price real architectures: APIs, telemetry pipelines and cloud-native platforms, down to the cost per request.
A forensic teardown of token limits, context rot, compaction cliffs, productivity math plus the fixes vendors keep postponing.
A forensic teardown of RAG retrieval, KV cache flaws, prefill tax, 780M monthly queries plus the cost difference at 1M events per second.
A deep teardown of prompt-to-production software, sandbox execution, agent retries, deployment risk plus the cost difference at 1M events per second.
A forensic look at concurrency, cold starts, compute-resolver, AI Gateway waiting time plus the cost difference at 1M RPS.
A practical teardown of WebSocket collaboration, Rust isolation, conflict resolution plus the hidden price of an always-live canvas.
A forensic teardown of Notion's block database, 480 logical shards, CDC pipeline, vector search plus modeled cloud bill.
A control-plane redesign focused on regional isolation, failure containment, Raft plus zero-blast-radius operations.
Country mix, daily activity and full history on the live tracker page. Nine engineering instruments live on the calculators page: token bill, error budgets, HPA sizing and six more. No tracking, no backend.