Re: [Nolug] Quick question on clustering...

On Wed, 2003-03-26 at 12:29, Craig Jackson wrote:
> Yep, that's kinda what I thought i.e. the big database backend.

Remember, you could always use Oracle RAC!!!

> On Wed, 2003-03-26 at 12:15, Ron Johnson wrote:
> > On Wed, 2003-03-26 at 11:02, Craig Jackson wrote:
> > > But maybe the answer isn't so quick ;)
> > >
> > > How is it that web servers can be clustered?
> >
> > Others correct me if I'm wrong, but, typically, there is 1 computer that
> > faces the Internet and is a "re-director". It distributes the http
> > requests across multiple web server boxes.
> >
> > > How are the databases kept in sync?
> >
> > It depends. If it's a news site, then the databases are 99.999% read,
> > and the administrator can easily put the same new articles on a MySQL
> > database on each machine.
> > For user-updatable databases (like slashdot, kuroshin, etc), as far as
> > I know, you either get a single honking big back-end database server to
> > run PostgreSQL or MySQL, or pony up the big bucks for Oracle RAC.

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| Ron Johnson, Jr.        mailto:ron.l.johnson@cox.net          |
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