Function and Purpose
With the cache enabled, page content is generated once and then stored for a defined period. On subsequent requests, Joomla serves the cached data instead of rebuilding the content from scratch. This reduces database queries and CPU load.
Types of Cache
- Page Cache: Stores complete page views.
- Module Cache: Caches individual modules or output areas.
- Browser Cache: Additionally, the browser cache is used to store static files like CSS or JavaScript.
Management and Clearing
Cache settings can be configured in the Global Configuration under “System.” Use System → Clear Cache to clear the cache manually. You can set up automatic cache clearings in Scheduled Tasks.
Important Notes
- Freshness: After changes to templates or content, clear the cache to see updates immediately.
- Debugging: Temporarily disable the cache if you encounter display or functionality issues.
- Performance: Using the cache is especially beneficial for high-traffic sites.
