[SalesForce] BUG Unable to update static resource ( infinite cache at lightning community side, not browser side)

Usually the static resource files are cached in the browser. So in case you make minor change in the files they are not reflected immediately.

So to always get the latest changes in the browser, you can either do Ctrl+F5 or update VF page with the verison number in the resource.

Before Change:

<script type="text/javascript" src="{!URLFOR($Resource.myStaticResource, 'myApp/js/sequenceOrder.js')}"></script>

after Change:

<script type="text/javascript" src="{!URLFOR($Resource.myStaticResource, 'myApp/js/sequenceOrder.js?ver=001')}"></script>

Just increment the version in the parameter and that will fetch the changes in the view. I haven't worked with Lightning components, but this what works out for me in VF.

I had the same issue and ask in Trailblazer Community here.

I got the answer from Greg Rewis: "You need to have an id on the <g> element of the SVG. Then, simply concatenate the name together like this: <lightning:icon src="{! $Resource.sign + '#custIcon'}" alternativeText="My Custom Icon" />."

To do that, you need to open your svg file with a text editor, and you'll see something like this:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="120px" height="120px" viewBox="0 0 120 120" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <path d="M120,108 C120,114.6 114.6,120 108,120 L12,120 C5.4,120 0,114.6 0,108 L0,12 C0,5.4 5.4,0 12,0 L108,0 C114.6,0 120,5.4 120,12 L120,108 L120,108 Z" id="Shape" fill="#2A739E"/>
        <path d="M77.7383308,20 L61.1640113,20 L44.7300055,63.2000173 L56.0543288,63.2000173 L40,99.623291 L72.7458388,54.5871812 L60.907727,54.5871812 L77.7383308,20 Z" id="Path-1" fill="#FFFFFF"/>
    </g>
</svg>

Just add an id to the <g> tag, something like:

<g stroke="none" id="myAwesomeId" stroke-width="1" fill="none" fill-rule="evenodd">

And then add it to the name of your resource:

<lightning:icon src="{! $Resource.sign + '#myAwesomeId'}" alternativeText="My Custom Icon" />

Doc is supposed to be updated but you can add your voice to the thread :)

Also, I wasn't able to set the proper size to my svg as you'll see in the post, I'll be interested if you know how to do it :)