There are many caches in Tiki to improve Performance:

• Smarty Cache
• Link Cache
• Cache External Images
• Wiki Cache (for anonymous visitors, to avoid parsing page again & again)
• Data cache
  • Memcached when configured,
  • or defaults to filesystem cache
• Opcode/Bytecode offered by PHP
• MySQL also caches queries to improve performance

Clear cache

Cleating Tiki cache

GUI

Visit tiki-admin_system.php on your site or check System Admin documentation page.

CLI

You can also clear the cache from the command line by doing php console.php cache:clear

Browser cache

Find the documentation for your browser.