Claude Code's auto-memory keeps across sessions what evolves too fast for CLAUDE.md: preferences, active decisions, gotchas. The 4 types, filtering criteria, and an audit prompt to keep it clean.
REST for public APIs, gRPC for internal services. Server streaming for a real-time price feed, Protobuf for typed contracts, and the 4 streaming modes explained.
Automated workflow to eliminate horizontal overflow at every resolution. Claude Code + Playwright MCP: screenshot → fix → retest loop until zero defects.
A 50-million-row trades table, a 4-second query. After JSONB, partial indexes and date partitioning: 12ms. The four techniques that actually move the needle in production.
Binance down for maintenance at 2am, your service keeps hammering it at 10 req/sec. Circuit breaker, exponential backoff retry, timeout, fallback: the complete Go resilience stack.