[wp-trac] [WordPress Trac] #35096: Every option call results in a database query on multisite

[WordPress Trac]

#35096: Every option call results in a database query on multisite
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 Reporter:  buley               |       Owner:
     Type:  defect (bug)        |      Status:  reopened
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  Options, Meta APIs  |     Version:  4.4
 Severity:  normal              |  Resolution:
 Keywords:                      |     Focuses:  multisite
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Comment (by buley):

 The conditions are not obvious. As noted in the other ticket they are also
 hard to script because of the `WP_INSTALLING` flag. I believe it has to do
 with the size of options object growing beyond the limits of Object-Cache
 backends. When the set fails, there's no fallback to a memory cache. The
 default object size of e.g. memcached is 1M and its very common for
 plugins to accidentally add autoloading options
 (https://core.trac.wordpress.org/ticket/18244) so you could see the
 options table growing beyond this size in many situations on the large
 multisite installs affected by this bug.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35096#comment:4>
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