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Date: Mon, 02 Feb 2015 08:49:41 -0800
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Subject: Re: [PHP-DEV] [VOTE] Add is_cacheable() stream-wrapper operation
From: rasmus@lerdorf.com (Rasmus Lerdorf)

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On 02/02/2015 08:38 AM, Fran=E7ois Laupretre wrote:
> Hi,
>=20
> Opening the vote for :
>=20
> https://wiki.php.net/rfc/streams-is-cacheable
>=20
> This RFC proposes a generic way for opcode caches to decide if a given =
URI
> is cacheable or not.

Doesn't this imply that "path" is the one true cache key? There are some
issues with that which we will have to address at some point. For
example, when running fpm chrooted you need more than the path. We'll
likely need a more APC-like option here to use the device+inode for the
key. It seems like a generic mechanism like you are proposing needs to
take this into account and provide some mechanism that tells the opcode
cache how to determine uniqueness. Perhaps that is simply encoded into
the path parameter, but then maybe it should have a more appropriate name=
=2E

-Rasmus



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