|
|
Posted by Jerry Stuckle on 06/12/06 20:41
David Haynes wrote:
> Jerry Stuckle wrote:
>
>
> In general, I agree with you Jerry, except when you say 'So if you have
> a bump at lunchtime and need 50 connections, you have to have at least
> 50 connections around, even at 3AM when almost no one is on.'
>
> Most of the connection pools I have dealt with have high and low water
> levels (the high to prevent demand from consuming the system and the low
> to specify the minimum number of active connections). The pool then
> spawns new connections on an 'as needed' basis and releases them after
> some timeout period. In this respect, they act like a heap manager with
> garbage collection.
>
> Searching for a free connection can be O(1) if the connections are kept
> on their own free list.
>
> Connection pools typically require some means of persisting the shared
> pool across all the programs that want access to the database which
> usually rules them out if php is driven via CGI.
>
> -david-
>
David,
That's true with some pools. But not with mysql. All you have available are
persistent connections. You'd have to create your own pooling mechanism.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
Navigation:
[Reply to this message]
|