Over the past 30 days, the www.sqlite.org website has seen 6 separate 10-minute bursts of activity with 250000 hits/day rates and many 1-minute bursts in the 450000 hits/day range. Rates in excess of 200000 hits/day have been sustained for a couple of hours on one event. (Many of the 1-minute and 10-minute burst records can be found within that two-hour episode.)
These figures only count hits that accessed the database at least once. Images and static pages are not counted.
More data:
I duplicated the www.sqlite.org website on my desktop then started hammering on it using multiple instances of "wget -r". I ran the test for several minutes.
During this test, every hit involved multiple SELECTs and at least one UPDATE against a single sqlite database file. The database engine was easily able to handle a rate of over 2500000 (2.5M) hits/day or about 30 hits/second. The database did not appear to be the limiting factor in this test - other components (such as the customized web server that www.sqlite.org uses and the exec()-ing of RCS commands) seemed to be what kept it from going even faster.
So I'm going to revise my earlier estimates of SQLite's abilities for use with websites. I now believe that SQLite is appropriate for use as the primary database on websites that get up to 1 million hits per day.
-- D. Richard Hipp -- [EMAIL PROTECTED] -- 704.948.4565
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