Hi,
I'm working on a table that has about 12 columns against which
arbitrary queries must perform really well. Currently there are a lot
of indexes on the table, but I'm hitting some problems - and adding
more indexes seems a slippery slope (there are ~15 multi-column
indexes, I'd like that reduced).
So I'm looking for a way out and I'm currently considering:
* Building a memory table on top of the existing table
* Sphinx indexing and then throw the queries against Sphinx instead
* Using a different "in-memory-DB" like Tokyo Cabinet for the queries
* Building a series of "reporting tables" which each handle a subset
of the supported queries
All of the solutions would maintain the current table for consistency
and it's acceptable with a couple of minutes lag.
I'm tempted to go for the memory table and update that depending on
which rows have been updated in the parent table since last update.
Eliminating duplicates could be a challenge, unless I build a new
table for each update and then "rename" the tables - but that's costly
in terms of memory.
What do people usually do in this situation? Any other solutions to
consider?
Thanks,
Morten
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