How can I inform users that they are using an outdated version through push notifications?

Situation:

  1. User has successfully logged in.
  2. Site undergoes an update.
  3. User holds cached html/js and accesses an old endpoint which causes chaos.

We often notice websites advising users to refresh their browsers after updates. But how is this typically accomplished?

I can envision two methods:

  1. Periodically check the database during navigation, compare version stored in Angular constant with version in the db. Notify if there's a mismatch.
  2. Possibly implement a SignalR scenario to push notifications even when the browser is inactive on the site.

Are there any other considerations? What would be the best approach based on our technology stack (see tags)?

javascriptsqlangularjswebapi2

Answer №1

To prevent caching of your content, you can add specific meta tags to the HTML code.

    <meta http-equiv="Cache-control" content="no-cache" />
    <meta name="expires" content="wed, 15 Sep 1993">
    <meta http-equiv="pragma" content="no-cache" />

When it comes to JavaScript references, it's best to cache-bust them by adding a token to the filename like:

    <script src="/path/to/script/myscript_1234567890.js"></script>

Alternatively, you can use:

    <script src="/path/to/script/myscript.js?v=1234567890"></script>

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