View source for Maintenance: Clear Cache/en

<noinclude><languages /></noinclude> 
==Description== 
Clears cache files from the cache folders if enabled under the  [[Help40:Site_Global_Configuration/en#Cache_Settings|Site Global Configuration]] settings.

Cache files are temporary files that are created to improve the performance of your site. If you have made significant changes to your web site, such as changing your Template or Language, your cache files may be out of date. To avoid any problems caused by out of date cache files, you can delete all of the cache files.
After deletion of ''all'' Cache files the website may be a little slower until the cache files are re-created with use.

==How to Access== 
* Select {{rarr|System,Maintenance Panel,Clear Cache}} from the Administrator menu.
==Screenshot== 
[[Image:Help-4x-System-Clear-Cache-screen-en.png|800px]]
==Column Headers== 
{{:Chunk4x:Help screen column header Number/en}}
{{:Chunk4x:Help screen column header Checkbox/en}}
{{:Chunk4x:Help screen column header Cache Group/en}}
{{:Chunk4x:Help screen column header Number of Files/en}}
{{:Chunk4x:Help screen column header Size/en}}
==List Filters==

'''Search bar'''. Near the top of the page you will see the search bar shown in the [[#screenshot|Screenshot]] above. 
*'''Search by Text'''. Enter part of the search term and click the Search icon. ''Hover'' to see a ''Tooltip'' indicating which fields will be searched.{{-}}To 'Search by ID' enter "id:x", where "x" is the ID number (for example, "id:19").
*'''Filter Options'''. Click to display the additional filters.
*'''Clear'''. Click to clear the Filter field and restore the list to its unfiltered state.
*'''Ordering'''. Shows the current list ordering field. 2 ways to change the order:
**Select from the dropdown list. Ordering may be in ascending or descending order.
**Click a column heading. The column heading toggles between ascending and descending order.
*'''Number to Display'''. Shows the number of items in a list. Select from the dropdown list to change the number displayed.{{-}}The default for a site is '20' but this may be changed in the [[S:MyLanguage/Help4.x:Site_Global_Configuration{{#translation:}}#defaultlistlimit|Global Configuration]].
'''Filter Options'''
*'''None.''' This screen has no Filter Options.
{{Chunk4x:Help_screen_filters_Pagination/en}}
==Toolbar== 

At the top of the page you will see the toolbar shown in the [[#Screenshot|Screenshot]] above. The functions are:

*'''Delete:''' Deletes the selected items. Works with one or multiple items selected.

*'''Delete All:''' Deletes all the items. Works with all items.

*'''Clear Expired Cache'''.  Deletes all expired cache files. Cache files that are still current will not be deleted.  WARNING: This operation can be resource intensive on sites with a large number of items.

*'''Options.''' Opens the Options window where settings such as default parameters can be edited.

*'''Help'''. Opens this help screen.
==Quick Tips== 
* Normally you want to delete all cache files. To do this, click the check box in the column heading to select all files and then click the Delete icon in the toolbar.
==Related Information== 
* To change the cache settings for your site: [[Help40:Site_Global_Configuration/en|Global Configuration - Cache Settings]]

{{Cathelp|4.0,4.1,4.2|Site Maintenance Help Screens}}