Hi Sajith,
recent MySQL cluster versions don't have this limitation (for non-index
columns AFAIK) any more, you can store this data on the disk. There are
some
people that run openser with mysql cluster on this list, it was also
discussed a few times in the past here.
I think there is a penality about 10x when using disk-storage instead of
memory-storage for ndb, mainly for write queries, so be carefull in your
config file about the number of queries you make to the DB...
I can't comment on drdb and on postgres clustering, but in openser is mysql
the main target too. I did recently some work in this area, trying to even
the differences between the database connectors. But mysql is IMHO still
the
most stable option, as it gets the most testing from the users.
Cheers,
Henning
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