Patterns

Engineering decisions extracted from real work. Each writeup is short (3-5 min read), focused on one pattern, and grounded in code I actually shipped. Read what interests you. No reading order.

Multi-brain LLM routing

Cheap heuristics first, LLM classifier as fallback. How to pick the right model tier per request without burning cost or quality.

LLMRoutingCost

Three-tier AI fallback

Claude → rules → hardcoded. A degradation pattern that keeps the product working when the API doesn't.

LLMReliability

Real-time audio in Rust

Lock-free SPSC ring buffers, allocation-free audio paths, FFI patterns. Why Rust survives the real-time deadline.

RustAudio DSPFFI

Cross-architecture Android builds

Single APK across arm64/armv7/x86_64. Alignment bugs, NDK version pinning, libc++_shared dupe traps.

AndroidNDKBuilds

EU-first infrastructure

Why EU jurisdiction matters and how to stack Supabase EU + Sentry EU + GDPR-by-design without bolt-on overhead.

GDPRArchitecture

agentskills.io implementation

Why a skills layer above tools. SKILL.md format, progressive disclosure, when to graduate from raw tools.

AgentsAnthropic