How to Reduce server response times (TTFB) ?

[kartikag01]

Describe the bug
There are huge Reduce server response time (TTFB) on pages,

To Reproduce
Steps to reproduce the behavior:

1. Go to https://developers.google.com/speed/pagespeed/insights/
2. Run audit on-page, deployed by serverless
3. Check Opportunities section

Expected behavior
TTFB should not be that much.

[danielcondemarin]

@kartikag01 Can you provide an example repo to replicate this? On a basic next project backed with DynamoDB I'm getting consistent 100 score with TTFB under 1sec.

[kartikag01]

Yes, for the default application it's under 1sec,
when we keep adding stuff in it, these 2 errors comes into the picture.

This is url for trending gip repo, small code, just landing page.
Demo: https://dyn4skf33ttva.cloudfront.net/
Code : https://github.com/kartikag01/serverless-next-cloudfront-lambda

Which gives insights

So, these 2 things create big problem, when HTML goes bigger and application is a little complex.

In my production application, TTFB is around 2.5~3 Sec and Enable text compression is about ~1 sec.

Any idea or process by which it can be reduced.

[kartikag01]

The problem was with Forward Cookies in CloudFront config, setting it to None solved TTFB.

[barrysteyn]

@kartikag01 To note that by not forwarding the cookie, CloudFront is just better able to cache things. It is not so much as the setup is now magically working better, instead, the cache is now working better. However, you lose on the fact that two different with different cookies may get the same identical things served to them. If you are not using cookies, then okay. However, @danielcondemarin set this to forward everything on purpose as this behavior (at least for a SPA) is very rare.