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From:Alexis Cheshire Date:December 7 2004 5:12pm
Subject:RE: Query Cache
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Do you know if this is available thru the C API .. Could a User Defined Function be
written to return this?

Any more ideas would be great..

Thanks

Skex
-----Original Message-----
From: Eric Bergen [mailto:eric.bergen@stripped] 
Sent: 07 December 2004 16:50
To: Alexis Cheshire
Cc: mysql@stripped
Subject: Re: Query Cache

Skex, 

show status like 'Qcache%';
Will give you status of the query cache. There isn't a way to tell if a query result came
from the cache or not other than the time it took to return or if it's the only query ran
between checks of the show status.  Neither of these methods is very reliable. Cache hits
from Qcache_hits and Com_select from show status like 'Com_select'; should be enough to
tune the cache. Alternatly the mytop utility will show you cache hit miss ratios on the
fly.

-Eric


On Tue, 7 Dec 2004 16:28:38 +0000, Alexis Cheshire <alexis@stripped> wrote:
> Hi,
> 
> Is there a way to access if a Query is returning its record from QUERY_CACHE or not?
> 
> E.g.
> 
> $sql="SELECT * FROM TABLE";
> $result=db_query($sql);
> print $result;
> 
> //If query NoT returned from mysql_query_cache() //Would Output 
> something like:
> Array["status"]["cached"]=0;
> Array["status"]["count"]=1;
> Array["data"][0][field1]=1;
> Array["data"][0][field2]=2;
> Etc...
> 
> //ELSE
> //Would Output something like:
> Array["status"]["cached"]=1;
> Array["status"]["count"]=1;
> Array["data"][0][field1]=1;
> Array["data"][0][field2]=2;
> Etc...
> 
> Any ideas would be greatly appreciated...
> 
> Skex
> 
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> 


--
Eric Bergen
eric.bergen@stripped
http://www.bleated.com

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Thread
Query CacheAlexis Cheshire7 Dec
  • Re: Query CacheEric Bergen7 Dec
RE: Query CacheAlexis Cheshire7 Dec
  • Re: Query CacheEric Bergen7 Dec
RE: Query CacheAlexis Cheshire7 Dec