doc/database/db_cache.md

   1 Table cache
   2 ===========
   3
   4 Stores temporary data
   5
   6 | Field        | Description                        | Type         | Null | Key | Default             | Extra |
   7 | ------------ | ---------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
   8 | k            | cache key                          | varchar(255) | NO   | PRI | NULL                |       |
   9 | v            | cached serialized value            | text         | NO   |     | NULL                |       |
  10 | expires      | datetime of cache expiration       | datetime     | NO   | MUL | 0001-01-01 00:00:00 |       |
  11 | updated      | datetime of cache insertion        | datetime     | NO   | MUL | 0001-01-01 00:00:00 |       |
  12
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