TTFB delayed 22 seconds (angular7 + IIS server)

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We are implementing angular SSR for our website SEO purpose. All the integration then node &inode installation everything done and site is working fine in UAT and QA environments. when we move the patches to production environment we are facing TTFB delay with 21.3 seconds. We are not sure why these environement based issue occured. Becuase production environement also installed same softwares and configurations all same. But these delays we are not able to identify the root cause.

ANgular7 IIS Windows Server

What I have tried:

Static & Dynamic compression, ,
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Posted 5-Aug-21 8:04am

sencsk

Updated 6-Aug-21 6:55am

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Richard Deeming 6-Aug-21 4:53am

There's a secret error somewhere in your secret code. You need to fix that.

Seriously, how do you expect anyone to help you diagnose a problem with code we can't see running on a server we have no access to?

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SeeSharp2 · Answer 1 · 2021-08-06T06:55:00

Solution 1

It is probably a configuration issue on the network or slowness with your ISP or datacenter. QA and UAT in the same datacenter?

There is not anything we can do other than make suggestions for things to look at and try.

Posted 6-Aug-21 6:55am

SeeSharp2

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sencsk 26-Oct-21 12:30pm

Thanks for the reply. I have enabled the log and observed some issue with node. But don't have details. Module Name: iisnode
Notification: EXECUTE_REQUEST_HANDLER
TYPE: MODULE_SET_RESPONSE_SUCCESS_STATUS