-------- Original Message --------
Subject: Re: QPID clustering
Date: Sun, 18 Nov 2007 20:50:22 -0500
From: Dan Mihai Dumitriu <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
References: <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]>
I'm actually rather interested in the HA features as well. Could you
expound a bit on how to set up HA using Veritas? Is it essentially
pushing the HA storage problem down to the storage layer (HA DB or NAS)?
I've started some HA work on the C++ broker trunk, its currently in
suspended animation while I focus attention on performance of the core
functionality.
So far the cluster supports replicated "wiring" (queue & exchange
declarations) via OpenAIS, a reliable multicast protocol.
Next step is to replicate queue state. This could be done via multicast
also but there's an argument that replicating point-to-point to a
limited number of backups will be make less inclined to saturate the
network. I expect I will experiment with both to see how it works out. A
full N-way, all-multicast solution has the advantage of being more
robust and a lot simpler to configure, but the performance benefits may
make a limited-backup point-to-point option viable as well.
Thre's some more detail at
http://cwiki.apache.org/qpid/cluster-design-note.html - its slightly out
of date as it still talks in terms of the 0-8 protocol, but the concepts
are pretty much the same.
I expect to get back to this full time within the next month or so, very
happy to hear any suggestions you might have.
Cheers,
Alan.
