On 26 Jul 2014, at 7:13 AM, lucas <sjluk...@gmail.com> wrote: > i have it in a module and under that module i have the variable setup as a > global variable. wherein, if the variable is empty upon using it, i load the > list of lists from a text file. if it is not empty, then i just use it. so > in that case, is there just the single instance in memory, no matter the > number of users or sessions? thanx, lucas
One instance per process (the best you can do, since processes don't share memory spaces) (well, not as a rule). You could also do your initialization unconditionally directly in the module (not in a function, or in a function called from the the modules top level); it'll happen on the first import. If you trigger initialization from a global variable (in the module), keep in mind the possibility of a race causing multiple initializations on parallel threads. Probably rare enough that you don't care, as long as there's no possibility of exposing some inconsistent state during initialization, but worth thinking about. I'm pretty sure that Python protects you against that if you do your initialization at import time. Side note: when you're thinking about this kind of thing, you want to think in terms of requests, rather than users or sessions. Requests are the basic unit of execution for web2py. Sessions are just persistent objects that can be shared across a set of requests (using cookies), and users are just another persistent database entity. -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
