Caching is a technology that stores frequently accessed website data in a temporary storage location so it can be delivered more quickly when requested again.
Instead of generating every page from scratch whenever a visitor accesses your website, caching allows previously generated content to be reused. This reduces the amount of processing required from your server and can significantly improve website performance.
Caching is one of the most common techniques used to improve website speed, reduce server resource usage, and provide a better experience for visitors.
How Does Caching Work?
Without caching, when a visitor opens a website, the server may need to:
- Process PHP scripts.
- Query the database.
- Generate the webpage.
- Load website assets.
- Process application requests.
- Send the completed page to the visitor.
With caching enabled, a copy of frequently requested content can be stored and served without requiring the server to generate everything again.
The process generally works like this:
- A visitor requests a page on your website.
- The server processes the request and generates the page.
- A cached copy of the content is stored.
- Future visitors may receive the cached version instead of requiring the server to generate the page from scratch.
- The website can load faster while using fewer server resources.
What Are the Benefits of Caching?
Caching can provide several important benefits, including:
- Faster website loading times.
- Improved visitor experience.
- Reduced server resource usage.
- Better performance during traffic spikes.
- Faster delivery of frequently accessed content.
- Improved website responsiveness.
- Reduced database and application processing.
For businesses, a faster website can also improve customer satisfaction and reduce the likelihood of visitors leaving because of slow loading times.
What Types of Caching Are Available?
Different types of caching can be used at different levels of the website and hosting environment.
Browser Caching
Browser caching stores certain website files on a visitor's device.
When the visitor returns to your website, their browser can load these files from local storage instead of downloading them again.
Examples include:
- Images.
- CSS files.
- JavaScript files.
- Fonts.
- Other static website assets.
Website/Application Caching
Application caching stores generated website content or frequently accessed data so it can be delivered more quickly.
This is commonly used by platforms such as WordPress through caching plugins and other optimisation tools.
Examples include:
- Page caching.
- Object caching.
- Database caching.
Server-Level Caching
Server-level caching takes place within the hosting infrastructure.
Because cached content is stored within the server environment, it can reduce the amount of processing required to generate and deliver frequently requested content.
Examples include:
- LiteSpeed Cache.
- Nginx caching.
- Reverse proxy caching.
- Other server-side caching technologies.
CDN Caching
A Content Delivery Network (CDN) can store copies of static website files across multiple locations around the world.
When a visitor requests content, the CDN can deliver it from a location closer to the visitor, potentially improving loading times and reducing the distance data needs to travel.
Examples of content that can be cached by a CDN include:
- Images.
- CSS files.
- JavaScript files.
- Fonts.
- Other static assets.
Does SIRSTEVEHQ Provide Caching?
Yes. SIRSTEVEHQ supports different caching technologies depending on the hosting solution and environment you use.
Depending on your hosting service, available caching features may include:
- StackCache for SIRSTEVEHQ CP hosting users such as cloud hosting, WordPress hosting, Cloud servers.
- LiteSpeed Cache on supported Hosting environments such as cPanel hosting, DirectAdmin hosting, Plesk hosting, and Enhance hosting.
- CDN caching through supported CDN integrations, free on SIRSTEVEHQ CP hosting.
These technologies can help improve website performance, reduce unnecessary server processing, and provide a better experience for visitors.
What Is StackCache?
StackCache is SIRSTEVEHQ's caching technology designed to improve website performance by reducing the processing required to deliver frequently requested content.
It works by storing frequently accessed website data so it can be delivered more efficiently when requested again.
StackCache can be particularly useful for dynamic websites and applications such as:
- WordPress websites.
- Business websites.
- Web applications.
- Content-heavy websites.
- Websites with significant visitor traffic.
The exact caching capabilities available may depend on the hosting environment and website configuration.
Does Caching Work Automatically?
In many cases, yes.
Depending on your hosting plan and website configuration, some caching features may already be enabled automatically.
However, certain websites may require additional configuration, particularly websites using:
- WordPress caching plugins.
- Custom applications.
- Dynamic content.
- eCommerce platforms.
- Special server configurations.
Caching should be configured appropriately to ensure that dynamic or personalised content is not incorrectly cached.
Can Caching Cause Website Issues?
Sometimes.
Because caching stores previously generated content, you may occasionally see an older version of your website after making changes.
For example:
- Updated text may not appear immediately.
- New images may not show.
- Recent design changes may not be visible.
- Updated CSS or JavaScript files may not load immediately.
These issues are often resolved by clearing the relevant cache and allowing the website to generate a fresh version of the content.
How Do I Clear My Website Cache?
The method for clearing your cache depends on your hosting environment and the caching technologies being used.
You may need to:
- Clear your WordPress caching plugin.
- Clear the server-level cache.
- Clear your CDN cache.
- Clear your browser cache.
If you have recently updated your website and the changes are not appearing, clearing the relevant caches is often one of the first troubleshooting steps.
Does Caching Replace Website Optimisation?
No.
Caching can significantly improve website performance, but it should be combined with proper website optimisation practices.
Other important optimisation measures include:
- Compressing and optimising images.
- Using lightweight themes and plugins.
- Optimising databases.
- Keeping website software updated.
- Using an appropriate PHP version.
- Optimising website code.
- Using a suitable hosting environment.
- Using a CDN where appropriate.
A well-optimised website combined with properly configured caching can provide significantly better performance.
Need Help Setting Up Caching?
If your website is slow or you need assistance enabling or configuring available caching features, please open a support ticket through your Client Area.
When contacting us, please include:
- Your domain name.
- Your hosting plan.
- Your website platform, such as WordPress.
- Any performance issues you are experiencing.
- Any caching tools or plugins you are currently using.
- Any recent changes made to your website.
Our Support Team will review your setup and guide you toward the most appropriate caching solution for your website.
