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[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 Enter image description here Enter image description here

  • The photos below of Browser & Postman

Response time: ~ 200ms Enter image description here Enter image description here

Argomenti
ServerlessComputazionaliFront-end web e dispositivi mobiliNetworking e distribuzione di contenuti
Tag
AWS LambdaGateway API di Amazon
Lingua
English
AWS-User-8719096
posta 2 anni fa902 visualizzazioni
1 Risposta
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Risposta accettata

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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ESPERTO
Uri
con risposta 2 anni fa
  • AWS-User-8719096
    2 anni fa

    Hi Uri, i found my problem. It's because of my region & network issues. Thanks for replying

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