javascript - Server response time in browser -

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after searches in google cant found answer. have requested data server. takes time load in browser. don't know whats happening. have pasted browser network time.
want is, server response slow or browser rendering slow.
please describe things in image, helpful.

enter image description here

the server slow 1.5 seconds wait request sent small answer being returned.

there initial delay setting connection ok being reused.

however, picture not show details of browser delay.

i focus on improving server response.


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