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Rate Limit and Quota Planner
Plan backoff settings and quota monitoring checklist from expected RPS and team size.
medium risk
Algorithm: decorrelated_jitter
Initial delay: 500ms
Max delay: 20000ms
Max retries: 5
Workers: 4 × 3 concurrency
- • Budget 5.0 RPS across 4 teammates (~1.25 RPS per worker).
- • Use decorrelated_jitter with 500ms initial delay, 20000ms max delay, and 5 retries.
- • Cap in-flight requests to 3 per worker (12 total at full parallelism).
- • Treat 8 RPS as the safe retry budget (2.0x burst × 80% guardrail).
- • Add jitter to retries and log rate_limit_exceeded separately from quota_exceeded before launch week.
Alert on sustained 429 rate — Page when more than 2% of requests return 429 for five consecutive minutes.
Track x-unlimitedcodex-quota-state — Alert when responses move from healthy to warning, urgent, or blocked.
Split 429 codes in logs — Classify rate_limit_exceeded separately from quota_exceeded and token/image quota codes.
Read x-ratelimit-remaining-requests — Dashboards should show remaining request budget before traffic spikes.
Read x-ratelimit-remaining-tokens — Token pressure often appears before request pressure on chat-heavy workloads.
Read x-ratelimit-remaining-images — Image workflows need separate monitoring from text endpoints.
Track estimated cost trends — Review cost movement weekly during validation sprints and daily before launch.
Honor Retry-After headers — Short-term rate pressure should respect server-provided retry windows.
Attribute usage by API key — Separate development, staging, and production keys so noisy local tests do not mask launch traffic.
Publish per-developer RPS budgets — Split the 5.0 RPS target across 4 engineers during shared test windows.
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