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CPU utilization lies: autoscaling a single-threaded service
A service was slow under load, but autoscaling never fired because CPU sat at 30 percent. A single-threaded app on a multi-core task saturates one core and reads as barely busy. Why, and how to fix it.
- devopsaws
Testing Lambda + EventBridge locally
How to test AWS Lambda functions and EventBridge rules locally using SAM, LocalStack, and docker-compose. No cloud deployment needed.