On Mar 24, 2009, at 8:06 AM, Claudio Nanni wrote:
Question:
Hello Claudio,
my company tried the mysql-proxy about one year ago(may be more) but
could
not use it
for not being multithreaded. They say they spoke to the 'mysql-proxy'
developer.
Is this still true? Are there any limitation on using mysql proxy on
a high
load production server?
It's still not multi-threaded, but work is progressing in this area,
see:
https://lists.launchpad.net/mysql-proxy-discuss/msg00041.html
There are people using it on high-load production servers, for various
flavors of "high load". How much impact *any* proxy will have depends
a lot on the type of workload you run through it, and what you do with
the data while it's in the proxy itself, since what's going to hurt
you performance-wise is directly related to latency, caused by the
extra network "hop", and anything else you do that delays the data
being forwarded.
Will it be completely(almost) transparent?
Once again, that depends on what you do to the data flowing through
it. The only major non-transparent part of the proxy is the
permissions system, in that clients connecting through the proxy will
always *appear* to be connecting *from* the proxy from mysqld's point
of view, since there is no way to "forward" the client address to
mysqld itself.
For proxy-related questions, you'll probably get more detailed,
quicker responses if you join the launchpad project's mailing list at:
https://launchpad.net/~mysql-proxy-discuss
If you're considering using mysql-proxy, I highly recommend tracking
the project via the mailing list and staying in touch with the
developers and the community, to both get a better idea if it's going
to work for your situation in it's current (and always changing)
state, and also to provide input into the direction of the developers.
Best regards,
-Mark
--
Mark Matthews, Architect - Enterprise Tools
MySQL @ Sun Microsystems, Inc., http://www.sun.com/mysql/
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