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Request #56883 Disk-based Cache
Submitted: 2006-03-07 16:50 UTC Modified: 2006-03-07 17:14 UTC
From: tom at rochen dot com Assigned:
Status: Wont fix Package: APC (PECL)
PHP Version: 4.4.1 OS: Linux
Private report: No CVE-ID: None
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From: tom at rochen dot com
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 [2006-03-07 16:50 UTC] tom at rochen dot com 
Description:
------------
I would like to see APC have the ability to cache opcode to the disk as well as RAM, that way, if the allocated RAM fills up, it can use the disk swap from disk to RAM as is needed.

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 [2006-03-07 16:51 UTC] tom at rochen dot com 
Changed type to "Feature/Change Request".
 [2006-03-07 16:55 UTC] rasmus@php.net 
The benefit of this would be minimal.  It probably would be slightly faster than re-compiling, but not by very much and isn't worth the extra complexity.
 [2006-03-07 17:11 UTC] tom at rochen dot com 
For a server that is hosting a small number of sites, the current APC version is good, but once you have several sites on a server, say like more than 25, you start filling up RAM quickly.  Having the disk to store opcode too would eliminate the need to keep feeding it more RAM.
 [2006-03-07 17:14 UTC] rasmus@php.net 
Yes, but if it is only marginally faster than not using APC at all, what is the point?  You are way better off identifying the scripts that are performance critical and only caching those by turning off cache_by_default and creating regular expressions in apc.filters that only match the stuff you want to cache.
 
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