Pysqlite tables in RAM

Steve Holden steve at holdenweb.com
Fri Sep 29 15:40:01 CEST 2006


Ranjitha wrote:
> Hi all,
> 
> I'm relatively new to python and am facing a problem with database
> access
> 
> I want to store my data in a database on the disk. I also want to be
> able to reload the tables into the RAM whenever I have a lot of disk
> accesses and commit the changes back to the database. There is an
> option of storing the data in the RAM where you connect to :memory:
> instead of a DB file. The problem with this is that the data is lost
> everytime you close the connection to the database. Could somebody
> suggest a way to load the tables into the RAM as tables and not as some
> lists or dictionaries?
> 
As long as your data isn't too voluminous it's quite practical to read 
it from a SQLite database on disk into a SQLite database in memory, 
given the same table structures on each.

But if the data isn't too voluminous then probably any 
halfway-reasonable database will also cache it effectively. So you may 
win less performance that you expect.

regards
  Steve
-- 
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