[development] creating forward compatable modules?

[Dan Robinson]

Hi Tao,

Glad to hear things are working for you.  Rather than ask a very open
ended question about how Drupal scales - for which the only reasonable
answer is "it depends" - you might try outlining your requirements.  
How many sites, how many users, how are the sites going to be used,
administered etc.  Also some information on your current IT
infrastructure - types of servers, network etc. would be helpful.

Dan

> Hi Drupal devs,
>
> First, thank you all for an amazingly useful tool.
>
> I am a programmer at the CITRIS center at UC Berkeley. We recently
> finished moving our own web site (http://www.citris-uc.org) over to
> Drupal and I am now working on the infrastructure to allow us to start
> providing Drupal-based sites for more of the campus community. So far
> I have been able to do everything I need with the available modules
> and a bit of hacking, but I am now starting to create custom modules. 
> I was wondering if it is possible to create modules that will be
> compatible with both 4.6 and 4.7?
>
> Also, does anyone have advice on how to calculate how many Drupal
> sites a server can handle?  Installing new hardware can take months
> around here, so I need to stay well ahead of the curve.
>
> thanks,
> Tao Starbow
> CITRIS
>