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SlowDown
AWS Error SlowDown: S3 SlowDown
Warning↻ Retryable · exponential backoffHTTP 503 Service UnavailableAPI Gateway
TL;DR · 10-second read
You exceeded S3's per-prefix request rate (3,500 writes / 5,500 reads per second per prefix). Spread keys across more prefixes and retry with backoff.
Identify: does your log match?
What you see · exact log / response
An error occurred (SlowDown) when calling the PutObject operation (reached max retries: 4): Please reduce your request rate.
Fix
Being written
Copy-paste fixes for SlowDown are in the enrichment queue
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Last verified 2026-10-09 · Source: botocore service models (errors per operation) · Official docs ↗ · ~2,400 searches/mo