EXCEED_CONCURRENT_REQUEST_LIMIT
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