Thanks for the example Thomas. Is there a way to verify that the cache is being used? Maybe through the trace?
On Wednesday, March 27, 2013 3:48:01 PM UTC-4, Thomas Mueller wrote: > > Hi, > > This is documented at > http://h2database.com/javadoc/org/h2/constant/DbSettings.html#QUERY_CACHE_SIZE > > Example: > > drop table test; > create table test(id int primary key, name varchar); > insert into test select x, space(10000) from system_range(1, 10000); > select sum(length(name)) from test; > select sum(length(name)) from test; > delete from test where id = 1; > select sum(length(name)) from test; > > The first query is slow (500 ms), the second is fast (1 ms), the third is > slow again (500 ms). > > Regards, > Thomas > > > > On Wed, Mar 27, 2013 at 8:22 PM, Mike Funaro <[email protected]<javascript:> > > wrote: > >> I am windows based for this application. Is there a way >> to programmatically put the DB file in memory? Or load certain table into >> memory? >> >> >> On Wednesday, March 27, 2013 3:02:38 PM UTC-4, Christoph Läubrich wrote: >>> >>> If you use a recent Linux, you can copy the database file to the >>> /dev/shm depending on your RAM and filesize this could speed up things >>> without any headache. >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "H2 Database" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected]<javascript:> >> . >> Visit this group at http://groups.google.com/group/h2-database?hl=en. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/h2-database?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
