It is probably about time to re-read the MySQL manual end-to-end as i more and more find myself discovering features i either completely forgot about or which i never was aware of in the first place ...
Todays guest is slave_compressed_protocol, an option that has probably been there ever since MySQL 3.23 at least (so that i can't claim that i seem to have missed the ChangeLog entry as i usually do Image may be NSFW.
Clik here to view.
With slave_compressed_protocol enabled the communication between slave and master uses the MYSQL_OPT_COMPRESS option to compress the protocol stream if both sides support it (and it's very unlikely to find an installation that does *not* support it these days), so this can be a big savior if your master and slave are at different sites with only limited bandwidth between the two.
Unfortunately this is a global server option though, IMHO this should be part of the options provided by the CHANGE MASTER command, similar to all the SSL encryption related stuff that is part of CHANGE MASTER.
Looks as if it is about time for YAFR (Yet Another Feature Request) ...
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