[wp-hackers] WP-Cache vs. eAccelerator vs. Memcache vs. ... (Yeah, another server opt. discussion)

[Computer Guru]

Honestly, WP-Cache will still be a bit faster IF you also install an opcode
cacher (like eAccelerator or XCache). You don't need (and won't benefit
from) the WP plugins for the opcode caching engines.

But try it and see.

On 10/28/07, Viper007Bond <viper at viper007bond.com> wrote:
>
> Okay, so assume I get all the plugins I have installed to be queryless and
> using the internal object cache -- would it be as fast as WP-Cache? The
> pages are still being generated from scratch rather than just pulled from
> a
> file cache (which is actually cached to memory). It seems like it'd be a
> step backwards.
>
> Plus, I already have WP-Cache working just fine (abeit modified quite a
> bit
> to get it working how I want -- gzip + proper dynamic includes), so is it
> worth ditching it?
>
> On 10/28/07, Computer Guru <computerguru at neosmart.net> wrote:
> >
> > The actual engine doesn't make a difference - it'll only cache the
> > compiled
> > php, and not the results from the database.
> >
> > the WP plugins let WP store the results from the DB in the opcode
> engine.
> > I
> > found it exteremely easy to hack Brian's Latest Comments to use object
> > cache
> > (no more 33 extra queries per page!) to store all comments and have it
> > rebuild the cache when a comment is added.
> >
> > WP-Cache converts everything to HTML. With object caching +
> my/ryan/mark's
> > plugin, a file "opts-in" to the caching process. Basically, you store
> the
> > results of a query/calculation in the cache, and add a hook to
> invalidate
> > that cache when needed. It's quite easy:
> >
> > Original line:
> >
> > $commenters = $wpdb->get_results("SELECT *, UNIX_TIMESTAMP(comment_date)
> > AS
> > unixdate FROM $tablecomments
> > WHERE comment_approved = '1'
> > AND comment_post_ID = '".$post->comment_post_ID."'
> > $ping
> > ORDER BY comment_date DESC
> > LIMIT $num_comments;");
> >
> > New line:
> >
> > // BEGIN WP-CACHE CHECK
> > if ( ( !$commenters = wp_cache_get( 'commenters_' .
> > $post->comment_post_ID,
> > 'blc' ) ) || $invalidated ) {
> >
> >
> > $commenters = $wpdb->get_results("SELECT *, UNIX_TIMESTAMP(comment_date)
> > AS
> > unixdate FROM $tablecomments
> > WHERE comment_approved = '1'
> > AND comment_post_ID = '".$post->comment_post_ID."'
> > $ping
> > ORDER BY comment_date DESC
> > LIMIT $num_comments;");
> >
> >
> > wp_cache_add( 'commenters_' . $post->comment_post_ID, $commenters, 'blc'
> > );
> > }
> >
> > and
> >
> > add_action( 'comment_post', 'blc_clear_cache' );
> >
> > So you basically check if a cache exists by a unique name. if it doesn't
> > store results of sql cache to the cache. add a hook to invalidate the
> > cache
> > when action XXXX is performed.
> >
> > Almost all of WP core uses object cache and properly invalidates it, so
> no
> > worries there. Any plugins that don't explicitly use object cache will
> > display dynamic data. Plugins configured to use object cache will
> properly
> > invalidate data. So no disadvantages to using it (plus, object cache
> code
> > gracefully degrades if object cache is not enabled).
> >
> > You have to actively "use" the object cache, unlike wp-cache where
> > everything is cached. However it's really easy
> >
> > On 10/28/07, Ozh <ozh at planetozh.com> wrote:
> > >
> > > How do such plugins (xcache, ea, memcache) behave regarding dynamic
> > > parts within files?  To say the least, WP-Cache support for dynamic
> > > stuff is terribly frustrating...
> > >
> > > Ozh
> > >
> > > --
> > > http://FrenchFragFactory.net ~ Daily Quake News
> > > http://planetOzh.com ~ Blog and WordPress Stuff
> > > _______________________________________________
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> > > wp-hackers at lists.automattic.com
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> > >
> >
> >
> >
> > --
> > Computer Guru
> > Director,
> > NeoSmart Technologies
> > http://neosmart.net/blog/
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> >
>
>
>
> --
> Viper007Bond | http://www.viper007bond.com/
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-- 
Computer Guru
Director,
NeoSmart Technologies
http://neosmart.net/blog/