RE: Accessing a Different DB from the 400

[Chris Nokleberg <chris@xxxxxxxxxxx>]

David Morris wrote:
> Have you looked at Proxool? Their focus is on connection pooling but
> looking at their approach may give you some ideas and it is also open
> source http://proxool.sourceforge.net/index.html. They support CGLIB
> (CGLIB2 as of this weekend) to create dynamic proxies that have some up
> front overhead but in the long run they are much faster. With older
> CGLIB versions, it takes a lot of calls to offset the startup overhead
> but CGLIB2 is supposed to support persistable proxies that will address
> the startup overhead but I haven't seen any examples.

Just to be clear the startup cost is only the first time you make any
proxy--to generate the class--so it only affects application startup. Once
the first proxy has been made additional instances are very cheap. But
you're right, CGLIB 2.0 is much faster to generate classes, thanks to the
use of the ASM bytecode library. CGLIB also works on JDK 1.2 in case that
is a requirement (Dynamic proxies require 1.3).

Chris