Hi!
On 2006/05/13, at 18:11, Philippe Lafoucrière wrote:
First of all, I'm new to webobjects, please avoid RTMF answers :)
You actually should RTFM, because the FM is really good! :) Apple
provides very good documentation on WO (as with everything else
related do developers). Particularly, you should read the WO Deploy
guide.
Could someone tell me where can I find some info concerning the
creation of a WO cluster ?
Nop. WO is made to do that! :) You just have to build your apps
with the concern that there will be a lot of instances running, not
just one. So, if you have, for example, timers (maintenance tasks
that run every X minutes), you cannot include them in the app (or
else, every app will run them every X minutes!). You should build a
separate app for that.
You should run several instances of your main app in each server
(how many? the right number should be N * MEM = TOTAL_MEM -
FREE_SPACE, where MEM is the memory your app uses, TOTAL_MEM is the
total system memory, and FREE_SPACE is some free space you should
leave for the OS! ;) The ideia is to fill up the server memory with
instances, but do not overload the server memory, or you'll start
swapping.
I know it's possible using JavaMonitor, but I want some extras
info, especially if webobjects can be runned on Xserve Cluster Nodes.
Why not? Even on Mac Minis! ;) You don't need Mac OS X Server any
more for deploying. A simple Tiger client will do.
Moreover, I'd like to know if I can build an EJB-like architecture
with WO : some xserves serving framework objects (I have to build a
really big website).
I don't know EJB, so I'll skip that one.
Anyway, read the WO Deploy Guide from Apple. It answers (almost)
all your questions about deploying.
Yours
Miguel Arroz
"I felt like putting a bullet between
the eyes of every Panda that wouldn't
scr*w to save its species." -- Fight Club
Miguel Arroz
http://www.ipragma.com
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