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What is API Blocking?

API blocking occurs when a server rejects requests because of exceeded limits, authentication issues, network reputation, or other access rules.

⚡️ Main causes:

- Exceeding the rate limit and receiving a 429 error
- Invalid API keys, tokens, or request parameters
- IP, regional, or network policy restrictions
- Excessive parallel load on the API

⚡️ What helps:

- Exponential backoff → gradually increasing delays between retries
- Retry-After → respecting the interval specified by the server
- Caching and queues → reducing unnecessary repeated requests
- Official quota increases → scaling without violating API limits

Reliable API usage is built on request-rate control, correct handling of 429 and 403 responses, and compliance with official quotas. Proxies are useful for network routing and regional testing, but they should not be used to bypass API limits

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