Consider table partitioning (it's described in the manual).

Andreas

-- Ursprüngl. Mitteil. --
Betreff:        [PERFORM] Drop table vs Delete record
Von:    "Orhan Aglagul" <[EMAIL PROTECTED]>
Datum:          22.05.2007 18:42


My application has two threads, one inserts thousands of  records per second 
into a table  (t1) and the  other thread periodically deletes expired records 
(also in thousands) from the same table (expired ones).  So, we have one thread 
adding a row while the other thread is trying to delete a row. In a short time 
the overall performance of any sql statements on that instance degrades. (ex.  
Select count(*) from  t1 takes  more then few seconds with less than 10K rows).

My question is: Would any sql statement perform better if I would rename the 
table to t1_%indx periodically, create a new table t1 (for new inserts) and 
just drop the tables with expired records rather then doing a delete record? 
(t1 is a simple table with many rows and no constraints). 

(I know I could run vacuum analyze) 

Thanks,

Orhan A.   


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