AI Coding Copilot (Inline Completion at Scale)
Design the inline gray-text code-completion system for millions of developers — instant, cheap, and high quality.
Key Requirements
- 01Sub-few-hundred-ms latency (debounce, cancel, small model, caching)
- 02Context assembly under a token budget (open/nearby files, LSP)
- 03Retention (not just acceptance) as the quality signal
- 04Cost control at high QPS; privacy (no-retention / on-device option)
- 05Load shedding under pressure; never send detected secrets
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