[imp] IMP H4 (5.0.15) (final)

[Michael M Slusarz]

Quoting Simon Brereton <simon.brereton at buongiorno.com>:

> On Nov 23, 2011 6:03 PM, "Michael M Slusarz" <slusarz at horde.org> wrote:
>>
>> Quoting Simon Brereton <simon.brereton at buongiorno.com>:
>>
>>> On Nov 23, 2011 3:26 AM, <matiss at jekabsons.lv> wrote:
>>>>
>>>> Quoting Jan Schneider <jan at horde.org>:
>>>>
>>>>> The Horde Team is pleased to announce the final release of the Internet
>>>
>>> Mail
>>>>>
>>>>> Program (IMP) version H4 (5.0.15).
>>>>>
>>>>
>>>> after upgrade, some mobile
>>>> interfase users comlaining about
>>>> that after login, to get all working
>>>> you need to refresh page. till
>>>> that, its impossible to open mails.
>>>> Is it known issue or HTC
>>>> Sensation bug?
>>>
>>>
>>> Please don't top-post.
>>>
>>> I has this issue on first login too.  Will retest later.
>>
>>
>> Because you aren't using static javascript to serve those files.  If you
> don't use static javascript, you are at the mercy of browser caching.
>
> I don't understand :)

Modern browsers are *very* aggressive when it comes to caching  
javascript.  So if we change imp/js/dimpbase.js between releases,  
which we will most certainly do, the browser won't pick up the changes  
until the cache lifetime is over (this is not entirely true - the ETag  
HTTP Header is designed to work around this, but a given HTTP server  
may not support Etags, or they may not be configured correctly).

Using static files ensures that when the version is updated, the  
javascript files are served from a new, unique hostname which we can  
100% guarantee a browser will need to download.

> And why would a mobile browser cache more than a desktop one - in my
> experience, it's the opposite.

No - it is even more critical for a mobile browser to cache due to  
limited bandwidth.  You will probably not notice a desktop browser  
that needs to download a copy of jquery on every pageload.  You will  
definitely notice this on a mobile browser (not to mention a browser  
can potentially cache the compiled javascript also, so it does not  
have to parse it again).

michael

___________________________________
Michael Slusarz [slusarz at horde.org]