Re: Inserts or Updates

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On 2/7/2012 4:18 AM, Ofer Israeli wrote:
Hi all,

We are currently “stuck” with a performance bottleneck in our server
using PG and we are thinking of two potential solutions which I would be
happy to hear your opinion about.

Our system has a couple of tables that hold client generated
information. The clients communicate *every* minute with the server and
thus we perform an update on these two tables every minute. We are
talking about ~50K clients (and therefore records).

These constant updates have made the table sizes to grow drastically and
index bloating. So the two solutions that we are talking about are:


You dont give any table details, so I'll have to guess. Maybe you have too many indexes on your table? Or, you dont have a good primary index, which means your updates are changing the primary key?

If you only have a primary index, and you are not changing it, Pg should be able to do HOT updates.

If you have lots of indexes, you should review them, you probably don't need half of them.


And like Kevin said, try the simple one first. Wont hurt anything, and if it works, great!

-Andy

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