[Gllug] Excuses for slow server response times

[David Damerell]

On Monday, 24 Jan 2005, Simon Perry wrote:
>I use a web service API that in it's first stage simply returns results 
>from a database. On Xmas eve execution times went from a .5 second 
>average to a 6 second average and stayed that way until I finally got 
>hold of the company in early Jan.
[And he was told]
>Response time increased because less people were using the service over 
>that period.
>Less searches were stored in memory so results were retrieved from the 
>database and were thus slower.

Query frequency would only be expected to affect cache hit rates if
cached responses expired merely because of the passage of time. That
might be true if, for example, the machine provided some other service
that consumed memory whose utilisation didn't fall off.

-- 
David Damerell <damerell at chiark.greenend.org.uk> Distortion Field!
Today is Leicesterday, January.
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