Steve Hull wrote:

> Yeah, that didn't work because caching the connection makes it 
> immutable, which means you can no longer write data to it.  But you know 
> what I think *will* work?  Storing the connection(s) as class vars.  So 
> I'm trying that next.  I will report back here afterward for anyone who 
> might be interested.

I'd use a singleton object (ruby Singleton module lets you do this 
easily, or it's easy enough to do yourself) that encapsulates logic and 
state for your 'connection pool', rather than class variables. But 
you're on the right track.

Note though that you've got to make sure all your logic (in this case in 
that hypothetical Singleton object), is concurrency-safe, if your rails 
app can possibly be deployed in any kind of a concurrent-request 
environment (or if you plan to create Threads yourself in your rails 
app, but hardly anyone ever does that).

You could look at the newish Rails 2.2 ActiveRecord ConnectionPool for a 
model, since it's doing basically what you want, but specifically for db 
connections. The ConnectionPool code might just end up being too 
confusing and complicated though, since it has to deal with Rails 
backwards compatibility issues and stuff. I haven't actually looked at 
the ConnectionPool code myself much yet.
-- 
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