Rate limits

100 requests a second per account, and how to backfill without hitting it.

Each account can make 100 requests a second across all endpoints. Over that, we return 429 Too Many Requests (RFC 6585) with a Retry-After header in seconds.

Backfills

A backfill is the most common way to hit the limit. Send events in batches of 500 per request, at 50 requests a second or less: that’s 25,000 events a second, enough for a month of most accounts in minutes.

Scale and Enterprise customers can ask their account owner for a higher limit during a planned backfill.

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