Blazor server side measure delays (nuget injection?)

Question

I was wondering, to measure the delays between client and a server based razor app.
How would one approach this, i think its be nice if our app could take actions (upon delays) , and give insights in how responsive it is.
If our app could inform that a client bandwidth limit is low (then render a lighter version, or inform the remote user).

Currently i have no good idea about frequent used areas, if users click a button /scroll, how much time did it took to render.
I want numbers, not user feelings describing our site as those very between people.

Any ideas maybe there is already such a nuget.

Answer 1

Hi @PGT ,

To diagnose performance issues in ASP.NET Core, you could try to use the following tools: Visual Studio Diagnostic Tools or Application Insights. More information is available in Performance Diagnostic Tools

Currently i have no good idea about frequent used areas, if users click a button /scroll, how much time did it took to render.
I want numbers, not user feelings describing our site as those very between people.

For the button/scroll event, you could also use F12 developer Network or Performance features to check the page load or click event spend time.

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Best regards,
Dillion

Answer 2

you probably want to hookup with the google analytics. web-vitals is a tiny library for this:

https://www.npmjs.com/package/web-vitals

you would set up on the page, and use javascript interop to hookup to live client events. if you review the blazor client library, you may be able to wrap its event handling