HTTP 429 Too Many Requests Error: Causes & Fix

The HTTP 429 Too Many Requests error occurs when too many requests are sent in a short time. In web scraping, this often means you've exceeded rate limits. Check the Retry-After header and wait before sending more requests.

What causes the error?

  • Excessive request rate by a single user or API client within a designated timeframe.

  • Shared IP address making numerous concurrent requests, triggering rate limits.

  • Automated scripts or bots making frequent and repetitive requests to the server.

  • Misconfigured client application repeatedly attempting to connect or synchronize data too quickly.

# Request example 
curl -X POST https://sandbox.oxylabs.io/ -H 'Accept: application/xml;q=0.9' -H 'Accept-Encoding: compress' -H 'User-Agent: Mozilla/5.0'

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How do you fix it?

  • Identify the failed dependency. Check the logs or error messages to determine which specific action or resource the request was dependent on that caused the failure.

  • Resolve the underlying issue. Address the root cause of the failure of the dependent action. This might involve fixing a bug, resolving a server issue, or ensuring that a necessary service is running.

  • Retry the request. Once the dependency issue has been resolved, attempt the original request again to see if the error persists.

  • Review and optimize dependencies. Analyze the dependencies of your requests to minimize coupling and reduce

# Response example 
HTTP/1.1 429 Too Many Requests
Content-Type: application/xml
Retry-After: 3600



429
Too Many Requests
3600

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