EXCEED_CONCURRENT_REQUEST_LIMIT

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Error Cause

Request limit exceeded due to sudden surge in cloud function concurrency

The default burst limit for elastic concurrency expansion per account is 500 per minute per region. When there is a sudden surge in concurrency, if there are not enough containers to handle the load, a large number of container request actions will be triggered, resulting in request failures.

Solution

Add Reserved Concurrency

Prepare persistent instances in advance to avoid insufficient container capacity during concurrency surges

For details, please refer to Cloud Function/Reserved Concurrency