[API Gateway] Why is the actual response time so large
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Hi everyone, I just have a test by setting up API Gateway + Lambda to check the response time. After finished i found a strange point after using X-Ray to trace the response time of API
My curious is:
1/ Why the response time so different ?
2/ How can i decrease the response time of browser or postman under 100ms even just with very simple testing infrastructure (AGW + Lambda) ?
p/s: i've enable API Gateway caching and thanks for your time
- The photos below of X-Ray
Response time : 6~8ms
- The photos below of Browser & Postman
Response time: ~ 200ms
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I am guessing that what you are seeing is a Lambda cold start, i.e., you are invoking the function for the first time after some idle time. To verify, go to the Lambda logs and check if re REPORT line includes "Initialization Duration".
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Hi Uri, i found my problem. It's because of my region & network issues. Thanks for replying