Posts

• 
  I Built an AI System That Makes Timestamped Market PredictionsThere's no shortage of market analysis. There's a shortage of accountability. Signal Rundown scans 22+ sources every 2 hours, maintains positions on 700+ stocks, and tracks every prediction against reality.Mar 9, 2026
• 
  Building a Model Serving API From ScratchProduction model serving layer wrapping Ollama with request batching, SSE streaming, backpressure, Prometheus metrics, and structured experiments revealing how latency, TTFT, and throughput behave under load.Feb 22, 2026
• System Design: Concepts, Patterns, TechnologiesA scannable reference for system design interviews. Core concepts, common patterns, and key technologies with the tradeoffs that actually matter.Feb 20, 2026
• 
  aideAI developer effectiveness dashboard. Ingests Claude Code session logs into SQLite and serves local analytics with cost trends, tool usage, and efficiency metrics.Feb 11, 2026
• Play Power Law GamesMost people spend their lives optimizing normal distribution games where outcomes are predictable and capped. The real leverage comes from identifying and playing power law games where one win can outweigh everything else combined.Feb 10, 2026
• 7 Principles for Staying EffectiveA mental framework for high performance: speed over perfection, outcome neutrality, compounding through micro-iteration, and more.Feb 9, 2026
• 
  Solving Gobblet Gobblers: Building a 20-Million Position TablebaseA minimax solver for Gobblet Gobblers: proving P1 wins, achieving 180× speedup with Rust, and encountering the Graph History Interaction problem.Dec 23, 2025
• Inside Chinese Pinyin: What 79,000+ Sentences RevealAnalyzing 1,161 unique pinyin syllables from 79,704 Chinese sentences reveals surprising patterns about tones, polyphonic characters, and what learners actually encounter.Nov 6, 2025
• 
  Building ML Serving InfrastructureProduction ML serving infrastructure with Prometheus metrics, Grafana dashboards, and Redis caching. Backend patterns applied to ML serving with 10-20x latency improvements.Oct 27, 2025
• How Prometheus and Grafana Actually WorkUnderstanding the observability stack: prometheus-client vs Prometheus vs Grafana, and how they work together to monitor your APIs.Oct 27, 2025
• 
  Hanzi Flow 1.0Adaptive Chinese learning app that keeps you in flow state. Learn 3,000+ characters through real sentences with an algorithm that picks optimal difficulty.Oct 24, 2025