[wp-trac] [WordPress Trac] #21434: Don't obliterate the object cache in switch_to_blog()

[WordPress Trac]

#21434: Don't obliterate the object cache in switch_to_blog()
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 Reporter:  ryan         |       Owner:  ryan
     Type:  enhancement  |      Status:  closed
 Priority:  normal       |   Milestone:  3.5
Component:  Cache        |     Version:  3.4.1
 Severity:  normal       |  Resolution:  fixed
 Keywords:               |
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Comment (by convissor):

 The new, efficient code for switching between blogs is an excellent
 improvement.  Thanks.

 Can you please elaborate on the reasoning behind deprecating
 {{{wp_cache_reset()}}} / {{{WP_Object_Cache::reset()}}} and why the
 deprecation message instructs people to use
 {{{wp_cache_switch_to_blog()}}} / {{{switch_to_blog()}}}?  The
 {{{reset()}}} and {{{switch_to_blog()}}} methods serve two separate
 purposes.  (Though some people may have used them in conjunction.)

 May I suggest the deprecation message direct people to
 {{{wp_cache_flush()}}} / {{{flush()}}} instead or have the replacement
 parameter mention both the flush and switch methods (eg "{{{flush() or
 switch_to_blog()}}}").

 The reason I bring this up is I use {{{wp_cache_reset()}}} in unit tests
 for my plugin to clean up the environment between tests so data is pulled
 from the database, not the cache.  The existing deprecation message sent
 me on a wild goose chase in which I found this ticket, spent time
 composing this message (during which I thought to seek a similar method in
 the class, which led me to {{{flush()}}}).  All in all, a good chunk of
 time, wasted.  If the message had directed me to the similarly functioning
 flush method, I'd have been on my way in moments.

 Oh, and can you please add the {{{@since 3.5.0}}} tags to the new function
 / method?

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Ticket URL: <http://core.trac.wordpress.org/ticket/21434#comment:4>
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