[wp-trac] [WordPress Trac] #56845: Multisite option caching breaks for sites with bigger options

[WordPress Trac]

#56845: Multisite option caching breaks for sites with bigger options
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 Reporter:  pavelschoffer       |       Owner:  (none)
     Type:  defect (bug)        |      Status:  new
 Priority:  normal              |   Milestone:  6.1
Component:  Options, Meta APIs  |     Version:  trunk
 Severity:  critical            |  Resolution:
 Keywords:                      |     Focuses:
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Comment (by rebasaurus):

 > The outcome of this change is that if the cumulative size of ALL site
 options is bigger than 1MB (default limit of memcached per object) NONE of
 the options will be cached.

 If none of the options end up being cached, it will attempt to add them to
 the cache on each request (e.g. if it never succeeds, it will continue to
 do so over and over). A sample stacktrace would be:

 `get_network_option()` -> `get_metadata_raw()` -> `update_meta_cache()` ->
 `wp_cache_add_multiple()` -> `wp_cache_add()` -> `MemcachePool->add()`

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Ticket URL: <https://core.trac.wordpress.org/ticket/56845#comment:3>
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