From: "M. Edward (Ed) Borasky" <znmeb@...>
Date: 2007-08-06T23:29:33+09:00
Subject: Re: JRuby on a huge project

Dafi-Duck wrote:
> Hi,
> 
> I am working on a new project built on websphere portal.
> I need to be able to have about 2 million concurrent users.
> If I use JRuby, will it work?
> Can JRuby work well on websphere portal?
> Can JRuby work with porltets?
> 
> Please help...

The best advice I can give you is to hire a professional performance
engineering team -- this isn't something you're going to be able to
learn on a mailing list staffed by volunteers. I'll let Charlie answer
the jRuby-specific questions, but I'll tell you up front as a working
performance engineer that 2 million concurrent users is a *massive*
undertaking.

I can't even begin to list the *hundreds* of ways you can screw up
performance on something like that, let alone the other challenges that
await in the areas of usability, security, privacy, etc. Let me know
when you've spent your first couple million dollars and have nothing to
show for it. ;(

Seriously, though -- unless you're the emperor of the world, you really
ought to start with something a little less challenging. Get 20 users up
and running on a server solid as a rock, then scale that by 100,000. ;(