Having issues with wp_postmeta and wp_usermeta tables too big

Modern MariaDB and MySQL versions allow your tables’ keys to be more efficient. Better keys can help a lot to speed up the kinds of database queries WooCommerce (and core WordPress) use.

If you have a recent MySQL version that can handle the DYNAMIC row format, these postmeta keys will help a lot.

    PRIMARY KEY (`post_id`, `meta_key`, `meta_id`),
    UNIQUE KEY `meta_id` (`meta_id`),
    KEY `meta_key` (`meta_key`, `meta_value`(32), `post_id`, `meta_id`),
    KEY `meta_value` (`meta_value`(32), `meta_id`)

This plugin installs those database keys for you. To avoid timeouts when installing the keys, you should run it with wp-cli.

This plugin mitigates some database inefficiencies with many users.

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