A 429 is the target rate-limiting the requesting IP. On a shared pool many users share that budget; on a dedicated endpoint you own the budget, so pacing and backoff solve it.
Fix 429 Too Many Requests behind a proxy
Quick answer
HTTP 429 means the target site limited requests from the address you are using. Through a proxy, the limit applies to the proxy address - which on a shared rotating pool is a budget strangers spend for you.
Fix 429 Too Many Requests behind a proxy
HTTP 429 means the target site limited requests from the address you are using. Through a proxy, the limit applies to the proxy address - which on a shared rotating pool is a budget strangers spend for you.
Likely causes
Verified remedy
Move the workflow to a dedicated static endpoint. The address budget becomes yours alone, and pacing controls it deterministically.
Likely causes
Verified remedy
Cut concurrency, add exponential backoff honoring the Retry-After header, and resume at the highest rate that holds. Keep the endpoint stable so the target's limit history ages out cleanly.
Likely causes
Verified remedy
Schedule that target's work in its own window with a lower rate. Do not change endpoints to escape a limit you control with pacing.
Requests complete without 429 while the endpoint stays unchanged.
If 429 persists at minimal rates on a dedicated endpoint, the address has inherited a bad reputation: retest from a fresh endpoint and record the incident.
Facts last reviewed 2026-09-01.
Set per-target rate budgets, honor Retry-After always, and keep one endpoint per profile so limits age out per identity instead of mixing histories.
The target limits the proxy address, not your device. On shared pools the address's budget is spent by everyone using it; on dedicated endpoints the budget is yours.
It makes them controllable: only your traffic shapes the address's reputation, so pacing and backoff work as intended.
Configure per-context endpoints that keep rate budgets separate.
View pageWhy a stable address makes limits predictable.
View pageDedicated vs rotating pools for managed operations.
View pageAdjacent guide for the same task family.
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