Users settingsAccelerator for WordPress

It’s the most complex settings in the product.

Cache#

• Enable

  Enables users caching. Due to users caching is a very complex thing we always ready to assist you in its setup. Also, in this mode additional cookie __Secure-wp_seraph_accel_sess_* is set when caching session is active.

• Only for fresh parts

  If enabled then checking user session is happening only for fresh parts. It gives ability to have all common content cached except defined fresh parts.

• Separate sessions

  In some rare cases, sessions can be combined into one.

• Enable content optimization

  Enables optimization for users. It can be useful to turn it off to save server CPU and reduce caching time.

Cache revalidation#

• Allow from browser

  Allows a user to revalidate the current page by force refreshing in the browser (e.g. pressing Ctrl+F5 in Chrome).

• Lazy revalidation

  Allows updating the content in the background. Disabled by default to ensure that the user’s cache is always up to date when it is updated.

• Time to live for cleanup

  Not earlier than the expiration of this time after the last change of content, it will be removed only from users’ cache by using the ‘Cleanup’ function to decrease cache storage space. If there is no need, it can be simply turned off by setting everywhere 0.

Data dependencies groups#

It is a list of groups that each consists of a set of cookies, arguments, and database table dependencies.

Settings for each group:

• Enable

  Enables/disables a specific group for easy customization, so as not to delete an element.

• Group name

  Optional name to identify.

• Cookies

  Pages’ requests having cookie names that begin with any of the specified strings will be treated as user-dependent and will be managed by the cache engine separately. If name begins with one of /~@;%`# it is interpreted as regular expression. Also, cookie’s value can be compared by appending name with = or != and exact value. E.g. @^wcml_client_currency$@ != EUR. It can be added multiple items at once by placing each on new line.

• URI arguments

  Pages’ URLs having arguments that begin with any of the specified strings will be excluded from caching. It can be added multiple strings at once via separating by commas.

• Tables

  List of user data-dependent tables that are used when user caching is active. When caching engine detects that user data has been changed according to specified tables, then it revalidates user session cached data to provide fresh content to the user. See the example below.

  Settings for each item:

  • Table name

    Database name of the table. Template %PREFIX% can be used that will be replaced by WordPress common database table name prefix.

  • Column name

    Table column name with user ID or field in the related table name.

  • Related table name

    Database name of the related to the initial table. Template %PREFIX% can be also used.

  • Column name in related table

    Table column name with user ID.

  • Link ID column name in related table

    Table column name that pointed from an initial table column.

  • Column conditions in related table

    Filters rows in the related table by specified conditions. It can be added multiple conditions at once via separating by semicolons.

Let’s look at the example by WooCommerce.

This plugin has its own post type to provide customer (user) orders storing. When the order is changed, we need to find out the related user ID and revalidate its cached data. So, orders are stored in the wp_posts table and column ID contains the order ID. Next, each order has information about the customer (user) that is stored in the post’s meta table named wp_postmeta with meta_key = _customer_user, post_id contains order ID, and meta_value contains needed user ID.

Finally, the depended table settings will be: