A per-IP limiter guards the endpoints that must accept unauthenticated traffic. Exceeding the cap returns a 429 with a retry window instead of writing a row. Limits are set per endpoint — for example five join applications per hour from one address.
Also called: spam protection · form abuse · bot submissions · junk leads
- 1The caller's IP is read from the forwarding headers
- 2Each endpoint declares its own bucket, request cap and window
- 3Over the cap returns 429 with the reset time and writes nothing
Any form a stranger can post to is eventually posted to by a robot, and the cost lands on a real person: an office manager opening a queue of four thousand fake applications, or a lead list too polluted to work from that morning. Public forms — join applications, demo requests, customer intake — are capped per source per window so one machine cannot flood them. The limit is described as best-effort rather than oversold: it holds per server, and stronger guarantees need shared state that can be added when volume demands it.
- Unauthenticated endpoints are open to automated flooding
- Spam submissions bury real applicants and real leads
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