[Phpmyadmin-devel] Concatenating js files

Rouslan Placella rouslan at placella.com
Tue Dec 18 18:20:27 CET 2012

On 12/18/2012 05:16 PM, Marc Delisle wrote:
> Rouslan Placella a écrit :
>> Hi all,
>> I've written a patch[0] that will concatenate js files on the server
>> side before sending them to the client. This will reduce the number of
>> http requests for js files to one per page. So, effectively, there will
>> be one request for js files when a user first loads a pma page and
>> subsequently there will 0 or 1 request (depending if we already have the
>> needed js file already loaded client side) for any additional page the
>> user navigates to. The patch would also close feature request[1] #3583340.
>> The performance benefits should be pretty obvious. You can see a
>> screenshot[2] of the firebug network panel that I took before and after
>> the patch. In the screenshot, I started on the main page and went to 4
>> different server status pages afterwards. This was on a local
>> installation, remote installations should benefit even more...
>> The reason that I'm bringing this issue up on the mailing list is that
>> there is also a drawback. Debugging js files will become somewhat more
>> complex, since we would have to figure out which file a problem might be in.
> If it's just a matter of grepping to find in which file some code is,
> I'm willing to pay this price.
> I assume that this big file would still be usable in Firebug's script
> debugger?

Yes. There might be several "big files" loaded though after a long 
browsing session. Refreshing the page, will bring the number back down to 1.

>> So the question is: are we willing to pay the price for this performance
>> boost?
>> Bye,
>> Rouslan
>> [0]: https://github.com/roccivic/phpmyadmin/tree/js-file-loader
>> [1]:
>> http://sourceforge.net/tracker/?func=detail&aid=3583340&group_id=23067&atid=377411
>> [2]: http://www.placella.com/temp/js-file-loader.png

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