The Ultimate Guide to High Availability with MariaDB

CACHE index

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CACHE INDEX                      
  tbl_index_list [, tbl_index_list] ...
  IN key_cache_name                    

tbl_index_list:
  tbl_name [[INDEX|KEY] (index_name[, index_name] ...)]

The CACHE INDEX statement assigns table indexes to a specific key cache. It is used only for MyISAM tables.

The following statement assigns indexes from the tables t1, t2, and t3 to the key cache named hot_cache:

mysql> CACHE INDEX t1, t2, t3 IN hot_cache;
+---------+--------------------+----------+----------+
| Table   | Op                 | Msg_type | Msg_text |
+---------+--------------------+----------+----------+
| test.t1 | assign_to_keycache | status   | OK       |
| test.t2 | assign_to_keycache | status   | OK       |
| test.t3 | assign_to_keycache | status   | OK       |
+---------+--------------------+----------+----------+

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