Thanks for the info. I have been reading about LVS, ultramonkey, and
supersparrow all weekend. Do you happen to know anything like
supersparrow or 3DNS that is better maintained and open source?
Something perhaps that doesnt use BGP for finding the best route and
best POP.
Thanks,
~Rob
Jake Anderson wrote:
Rob Gil wrote:
Hey all,
Its been a while since I posted on this list. I was recently laid off
and have had a good amount of time on my hands. In a recent interview
I was hammered with global load balancing and high availability
questions. The company was a content delivery based business.
Although I didnt get an offer, the interview opened my eyes to real
large scale implementations of webhosting, content delivery, and email.
What kind of options are there for MySQL replication or MySQL Clustering?
-The obvious problem of writes to slave servers... is there a way to
separate reads and writes?
-Has dbmail been tested on NBD tables?
-Has any work been done with HA mysql applications and dbmail?
These questions also apply to the dbmail-pop3d and dbmail-imapd. Are
there separate read and write servers?
If this isnt in dbmail yet, its probably something that could be
added relatively easy.
Looking forward to hearing your thoughts
~Rob
REM5
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Take a look at ultramonkey and replication. Perhaps perdition as well.
For POP hosting read/write would be fairly even I'd imagine.
For mysql clustering isn't really an option I don't think yet, as you
are limited to ram tables only so you would need replication.
But replication + ultramonkey looks a whole bunch like a HA cluster to
me. Perdition for load balancing by moving users around to different
"clusters" of dbmail.
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