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</o:shapelayout></xml><![endif]--></head><body lang=NO-BOK link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Stephan,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks for the tip! I didn’t think of this, but you are right – of course! :)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I very much like the idea of harnessing native OpenCms capabilities instead of implementing modifications. The only thing is, in one is to set general rules (i.e. “Expires” and “ETag” header rules) for files of particular types (i.e. “.jpg”, “.css” and “.js”) in Apache, one must make absolutely sure *all* such resources are fingerprinted. If a resource is not fingerprinted, but still targeted by a general rule in Apache, there could (will?) be problems.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>So, while it may be a great solution for some sites (smaller/simpler ones especially) and/or some file types (for example .css), it seem risky in my case. We’ve got a big site with a lot of pages and a lot of file types. I’m thinking things could easily go wrong somewhere.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ideally, I think a fingerprinting function should come in the form of a module that could easily be added and removed. But that also sounds like a lot of work x)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paul <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> opencms-dev-bounces@opencms.org [mailto:opencms-dev-bounces@opencms.org] <b>On Behalf Of </b>Stephan Hartmann<br><b>Sent:</b> 14. april 2014 08:30<br><b>To:</b> The OpenCms mailing list<br><b>Subject:</b> Re: [opencms-dev] URL fingerprinting<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Hi Paul,<o:p></o:p></p></div><p class=MsoNormal>This is possible for example with the link tag.<o:p></o:p></p></div><p class=MsoNormal>If you add URL query parameters, e.g. the datelastmodified of the linked file, OpenCms will generate exported versions with a fingerprint:<o:p></o:p></p></div><p class=MsoNormal><cms:link>/.../my.css?t=${datelastmodified}</cms:link><o:p></o:p></p></div><p class=MsoNormal>Of course you first have to read the datelastmodified and put it into page context.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>And the CSS file must have set the export property to true, either directly or inherited.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Kind regards,<br>Stephan<o:p></o:p></p><div><div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>2014-04-11 16:23 GMT+02:00 Paul-Inge Flakstad <<a href="mailto:flakstad@npolar.no" target="_blank">flakstad@npolar.no</a>>:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Hi,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Has anyone considered URL fingerprinting in OpenCms?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>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 ..?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>What I have in mind is adding the fingerprint when exporting (similarly to how /opencms/export/ is injected). </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>E.g. if the VFS resource’s offline URL is</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-indent:35.4pt'><span lang=EN-US>/static/my.css </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>the online URL would become</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-indent:35.4pt'><span lang=EN-US>/opencms/export/static/my-32819023810832091.css</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>when requested online.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Same for images, javascript and whatnot.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>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.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Would sure like to hear your thoughts on this, if you have any.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>(Don’t know about URL fingerprinting? Then you should read this: <a href="https://developers.google.com/speed/docs/insights/LeverageBrowserCaching" target="_blank">https://developers.google.com/speed/docs/insights/LeverageBrowserCaching</a>)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Cheers,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Paul</span><o:p></o:p></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>This mail is sent to you from the opencms-dev mailing list<br>To change your list options, or to unsubscribe from the list, please visit<br><a href="http://lists.opencms.org/cgi-bin/mailman/listinfo/opencms-dev" target="_blank">http://lists.opencms.org/cgi-bin/mailman/listinfo/opencms-dev</a><br><br><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>