[opencms-dev] URL fingerprinting

[Stephan Hartmann]

Hi Paul,

This is possible for example with the link tag.
If you add URL query parameters, e.g. the datelastmodified of the linked
file, OpenCms will generate exported versions with a fingerprint:
<cms:link>/.../my.css?t=${datelastmodified}</cms:link>
Of course you first have to read the datelastmodified and put it into page
context.
And the CSS file must have set the export property to true, either directly
or inherited.

Kind regards,
Stephan




2014-04-11 16:23 GMT+02:00 Paul-Inge Flakstad <flakstad at npolar.no>:

> Hi,
>
>
>
> Has anyone considered URL fingerprinting in OpenCms?
>
>
>
> I'm Curious because I'm thinking about modifying the export/link handler
> (?) to manage this. Since it's already doing some modification to the URLs,
> it should be possible to extend that some more - right ..?
>
>
>
> What I have in mind is adding the fingerprint when exporting (similarly to
> how /opencms/export/ is injected).
>
>
>
> E.g. if the VFS resource's offline URL is
>
> /static/my.css
>
> the online URL would become
>
> /opencms/export/static/my-32819023810832091.css
>
> when requested online.
>
>
>
> Same for images, javascript and whatnot.
>
>
>
> With fingerprinting in place, one could set the appropriate headers in
> Apache (or whatever's in front) and ta-daaaa pages would load (possibly a
> lot) faster, because many resources would be cached client-side.
>
>
>
> Would sure like to hear your thoughts on this, if you have any.
>
>
>
> (Don't know about URL fingerprinting? Then you should read this:
> https://developers.google.com/speed/docs/insights/LeverageBrowserCaching)
>
>
>
> Cheers,
>
> Paul
>
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