I totally agree that having the version in the filename and not in the
query string will be a-lot-better.
Just wanted to point you to that option so you can include it in your
excellent analysis on caching *thanks* :-)
People can use that option right now and get a more decent version later
(e.g. your versioned resource filenames, which is the *correct* way)
Resources need some more love in wicket 1.5 - full ack!
Cheers
Peter
Am 29.08.2008 um 09:24 schrieb Stefan Fußenegger:
Okay, sorry, you're right. Too bad, I didn't ever stumble upon this
option.
However, changing filename instead of using query string has certain
advantages, see
http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/
Furthermore, setting this option does not effect expires or cache-
control
headers. still only one hour, which is far from being aggressive. If
you
want to change that, you'll still have to explicitly mount all
resources
with your desired cache duration.
Johan suggested (comment on
http://talk-on-tech.blogspot.com/2008/08/wicket-interface-speed-up-modifying.html
my second article ) "what i can do is make it a setting:
IResourceSettings.getResourceCacheDuration()". If such a setting is
available, using
IResourceSettings.setAddLastModifiedTimeToResourceReferenceUrl(true)
would
make more sense.
I still think though that this isn't enough and resources should get
a focus
in upcoming wicket versions. Some might argue, that resources
shouldn't be
served by Wicket at all, but I really don't like to use proxies,
CDNs or
whatever voodoo for low traffic web sites: server-side performance
isn't an
issue there while client-side performance is.
regards
Peter Ertl wrote:
That's not true.
this settings will generate urls like:
/resources/[package+class]/javascript.js?lm=[lastmodified]
read it again : "add Last Modified Time To Resource Reference Url"
getApplication
().getResourceSettings
().setAddLastModifiedTimeToResourceReferenceUrl(true) ??
It will not sent the "LastModified" header as you think.
So whenever the resource changes the url changes, too.
Try it out and see :-)
I did test it in Firefox. There will be no "IfModified" requests from
the browser.
Everything will be completely cached in the browser until the
resource
has changed.
Cheers
Peter
Am 29.08.2008 um 08:17 schrieb Stefan Fußenegger:
honestly, no, I didn't. however, using last modified times still
results in
an HTTP request and a "304 Not Modified" reply. better than nothing,
but
client-side caching is still preferable.
regards
Peter Ertl wrote:
@stefan: did you take into account
getApplication
().getResourceSettings
().setAddLastModifiedTimeToResourceReferenceUrl(true) ??
Cheers
Peter
Am 28.08.2008 um 18:20 schrieb Igor Vaynberg:
sfussenegger now has access to wicketstuff...
i dont know which parts should go into wicket itself, i can tell
you
that the part where you merge the files by listing them out
upfront is
probably not going to make it in because it breaks
encapsulation...
-igor
On Thu, Aug 28, 2008 at 2:59 AM, Stefan Fußenegger
<[EMAIL PROTECTED]> wrote:
I just finished the 4th and last entry of my series "Wicket
Interface
Speed-Up" on my blog. To give a short summary: I investigated one
of my apps
with YSlow and started optimizing it's interface rendering speed
[1].
Especially Wicket's way of handling resources, i.e. JS and CSS
files, causes
interfaces to load rather slowly. In my articles, I explain how
to
modify
the cache interval [2], how to mount resources with a version
(e.g.
/css/all-1234.css) in order to use aggressive client-side caching
(e.g.
resources expire after a year) [3]. Finally, I show how to merge
resources
at application startup (using a class classed
MergedResourceStream)
to
reduce the number of resources a client has to download [4],
including
code). I was able to increase interface loading times
considerably,
so it's
surely worth a look.
I feel that it would also be worth to discuss, whether this work
could be
part of upcoming Wicket versions. For the time being I'd like to
make the
code attached to [4] a wicketstuff project - sfussenegger needs
commit
access ;) - and wait for your feedback.
The links:
[1]
http://talk-on-tech.blogspot.com/2008/08/wicket-interface-speed-up.html
Wicket Interface Speed-Up
[2]
http://talk-on-tech.blogspot.com/2008/08/wicket-interface-speed-up-modifying.html
Wicket Interface Speed-Up: Modifying Expires and Cache-Control
Headers
[3]
http://talk-on-tech.blogspot.com/2008/08/wicket-interface-speed-up-caching.html
Wicket Interface Speed-Up: Caching Resources Forever
[4]
http://talk-on-tech.blogspot.com/2008/08/wicket-interface-speed-up-merging.html
Wicket Interface Speed-Up: Merging Resources for Fewer HTTP
Requests
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