topic Re: Caching esri 4.0 js files in ArcGIS JavaScript Maps SDK Questions

Caching esri 4.0 js files

UdyWa — Tue, 21 Jun 2016 10:47:47 GMT

Hi,

Is there a way we can cache required esri javascript files rather than loading them each time from server?

require(["esri/views/MapView"])

Re: Caching esri 4.0 js files

DavidColey — Tue, 21 Jun 2016 15:23:15 GMT

Udy-

You have 2 choices: continue to reference the javascript modules via a cdn source or download and host the source on your webserver

David

Re: Caching esri 4.0 js files

ReneRubalcava — Tue, 21 Jun 2016 15:52:39 GMT

The browser will handle caching the files for you. Once you load the CDN, it will just use the cache for every subsequent request. You can check this via the Chrome Developer tools, when you refresh a page, you'll see it comes (from cache).

This is a benefit of using the CDN, as it will be cached across your applications.

Re: Caching esri 4.0 js files

DavidColey — Tue, 21 Jun 2016 20:06:06 GMT

Hi Rene, correct me if I am wrong, but the browser should cache the .js files regardless of source. I think I misunderstood the original question. I was thinking that the issue was with the CDN . . .

Re: Caching esri 4.0 js files

ReneRubalcava — Tue, 21 Jun 2016 20:21:55 GMT

Maybe I worded it wrong. It will cache the files regardless of source, but it's a cache per domain. So whether they are hosted on your own server or via CDN, they'll get cached in the browser. I think we're saying the same thing though.

All I meant was that by using the CDN, like using the Google CDN for jQuery, is that it's now cached in your browser for all pages to use.

Re: Caching esri 4.0 js files

DavidColey — Tue, 21 Jun 2016 20:34:12 GMT

Ah, cache per domain, yes. Yes I think we're saying the same thing as well - - -

Re: Caching esri 4.0 js files

UdyWa — Wed, 22 Jun 2016 14:47:29 GMT

The problem is, even if I downloaded the script files to local it still loaded from the server.

Re: Caching esri 4.0 js files

DavidColey — Thu, 23 Jun 2016 19:17:18 GMT

Hmm, yeah I'm not seeing that. Sorry I don't know what to tell you . . .