ajax - MVC return PartialView slow first time after edit -

i imagine answer cache related, better understand reason thought i'd @ least ask.

in mvc project i'm doing ajax request controller return html page partial view, inject html page with. reason model view changes depending on what's clicked.

here ajax: (please note code has been modified simplicity)

$.ajax({     type: 'get',     url: "../../home/newmembershipalloc/",     contenttype: 'application/json',     datatype: 'html',     success: function (data) {         $('#partial_div').html(data);     } }); 

here controller method:

public async task<actionresult> newmembershipalloc() {     return partialview("~/views/popup/genericpopup.cshtml", new membership()); } 

now, clear, works intended. everytime run code takes maybe 20ms, shown below:

however, if edit html page in way, if remove 1 character , add in. next time perform request take 2 seconds (ish).

so happening within development environment should place html edited. does not happen when refresh page, clear cache or open new browser. questions following:

1. what's full reason happening?
2. can stop being slow first time? or price pay loading new html?
3. would delay ever happen after release? if doesn't use webpage few days example , shuts down machine maybe.

it looks similar question:

https://stackoverflow.com/a/25006809/6862867

in reference above link:

the first time new or edited view requested server parse , compile code. takes small amount of time (but longer you'd expect page load) , required once each time page changes. suspect reason seeing if remove character , add in server not recognise has changed until parse/compile time file has changed since last time loaded.

it seem can precompile project on publish although i'm not clear myself on how done/works.

post release happen first time page loaded. round making request release it.

hope helps :)

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