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EDGE_FUNCTION_INVOCATION_TIMEOUT

Last updated October 6, 2025

The error occurs when an Edge Function takes longer than the allowed execution time to complete or doesn't send a response chunk for a certain amount of time. This can be caused by long-running processes within the function or external dependencies that fail to respond in a timely manner.

If your backend API takes time to respond, we recommend streaming the response to avoid the idle timeout. For longer-running workloads, consider migrating to Fluid compute which provides significantly longer durations and optimized performance.

504

EDGE_FUNCTION_INVOCATION_TIMEOUT:

Gateway Timeout

Troubleshoot

I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._v7-_v79_g.IN_1YP9lSd3iAlrWfWlSjd7w2BXkRLu_kcJ1imlrEiA/docs/errors/EDGE_FUNCTION_INVOCATION_TIMEOUT to understand what's happening. Please help me resolve this by: 1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error 2. **Explain the root cause**: Break down why this error occurred: - What was the code actually doing vs. what it needed to do? - What conditions triggered this specific error? - What misconception or oversight led to this? 3. **Teach the concept**: Help me understand the underlying principle: - Why does this error exist and what is it protecting me from? - What's the correct mental model for this concept? - How does this fit into the broader framework/language design? 4. **Show warning signs**: Help me recognize this pattern in the future: - What should I look out for that might cause this again? - Are there similar mistakes I might make in related scenarios? - What code smells or patterns indicate this issue? 5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.

To troubleshoot this error, follow these steps:

  1. Check application logs: Review the application logs to identify any specific errors related to the Edge Function being invoked. They can be found at the host URL under the path
  2. Review function code: Inspect the Edge Function code for any long-running operations or infinite loops that could cause a timeout
  3. Verify return value: Ensure the function returns a response within the specified time limit of 25 seconds
  4. Optimize external calls: If the function makes calls to external services or APIs, ensure they are optimized and responding quickly
  5. Consider streaming data: If the function is processing large amounts of data, consider using a streaming approach to avoid timeouts
  6. Implement error handling: Add error handling in the function to manage timeouts and other exceptions effectively

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