[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:  reopened
 Priority:  normal       |   Milestone:  3.5
Component:  Cache        |     Version:  3.4.1
 Severity:  normal       |  Resolution:
 Keywords:               |
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Comment (by ryan):

 flush() is not the proper replacement. It does nothing with some backends,
 especially for multisite.

 We don't want to encourage flushing/resetting the cache, we want to
 encourage switch_to_blog(). For unit tests that use the default backend,
 consider overwriting the cache object. wp_cache_flush() is fine, though,
 when testing a specific backend that is known to support flushing for both
 single and multisite.

 I'll add a note to the phpdoc. Patch coming up.

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Ticket URL: <http://core.trac.wordpress.org/ticket/21434#comment:11>
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