Trading bot 429 storm immediately after deploy
Multiple instances restart together, resync bursts hit the same budget, and retries amplify load. The path out is coordinated rate limiting, Retry-After handling, and startup ramp controls.
Common symptom variants
Primary playbook
When deploys trigger 429 storms: why synchronized restarts amplify rate limits, how to diagnose fixed window vs leaky bucket, and guardrails that stop repeat incidents.
Recommended resource
YAML config templates for Binance, Kraken, Coinbase, Bybit + decision checklist + 429 logging schema. Know when you're being rate-limited before your bot crashes.
Related posts
HttpClient keeps getting 429s: why retries amplify rate limiting in .NET
When retries multiply 429 errors instead of fixing them: how retry amplification happens, how to prove it, and how to honor Retry-After with budgets.
API key suddenly forbidden: why exchange APIs ban trading bots without warning
When API key flips from working to 403 forbidden after bot runs for hours: why exchange APIs ban trading bots for traffic bursts, retry storms, and auth failures, and the client behavior that prevents it.