How to Enable Edge Caching in StackCP to Speed Up Your Website

If your website feels slow — especially for visitors who are far from your server — Edge Caching is one of the fastest, easiest wins available to you. It's a single toggle inside your StackCP dashboard, and the impact on load times can be immediate.

This guide explains what Edge Caching does, exactly how to turn it on, how it works alongside StackCP's other caching tools, and what to check afterward.

What Is Edge Caching? (In Plain English)

Every time someone visits your website, their browser requests your pages, images, and files from your web server. If your server is in one location and your visitor is somewhere far away, that request has to travel across the internet and back, and that round trip takes time.

Edge Caching solves this by storing copies of your website's static content — images, CSS, JavaScript, and other files that don't change on every request — on a global network of CDN nodes positioned around the world, closer to your visitors. When someone visits your site, they're served the cached copy from the nearest node instead of your original ("origin") server on the other side of the world.

Think of it like a chain of local libraries instead of one central library everyone has to travel to. Once a copy of your page exists at a location near your visitor, everyone in that area gets it faster.

Why It Matters for Your Website

• Google treats page speed as a ranking factor, and Core Web Vitals are increasingly tied to it.
• Slow sites lose visitors. Even small delays in load time measurably increase bounce rates.
• It reduces load on your origin server, since cached requests are served from the CDN network instead of hitting your hosting account directly — helpful during traffic spikes.
• It costs nothing extra and takes one click. Edge Caching is included free with your hosting.

Step 1: Turn On Edge Caching

1. Log in to your StackCP account.
2. Go to Manage Hosting, then select Manage on the package you want to enable it for.
3. Locate the CDN section and select Edge Caching.
4. Switch the toggle to On.

That's genuinely it — there's nothing else you need to configure. Once enabled, all static content on your website is cached automatically and served from the CDN node closest to each visitor. By default, cached static files are held for a set period (commonly around a day) before being automatically purged and refreshed, so you don't need to manage expiry manually for most sites.

Step 2: Purge the Cache When You Make Changes

If you update your homepage, change a product price, or edit a page, visitors might briefly keep seeing the older cached version until it naturally expires.

To force an immediate refresh:

1. Go back into the Edge Caching section.
2. Select Purge Everything.

This clears the cache stored at every CDN node and forces them to fetch a fresh copy from your origin server on the next request. A good habit: purge after any meaningful content change, then check your live site in a private/incognito browser window to confirm it's showing correctly.

Step 3: Understand How This Works Alongside StackCache (for WordPress Sites)

If your website runs on WordPress, StackCP includes a companion tool called StackCache. Edge Caching handles your site's static content (images, CSS, JS); StackCache handles dynamic content — the actual page HTML your WordPress site generates — so that even fully dynamic pages benefit from fast, cached delivery.

StackCache comes pre-installed and free on our platform's WordPress-optimised hosting, with no extra setup required. To access its settings:

1. Log in to your site's wp-admin dashboard.
2. Look for StackCache in the left-hand sidebar.
3. From there, you can adjust cache expiry times for different file types (including Image and JavaScript caching, which can also be set directly from the Edge Caching section), and configure options like hiding the "Purge Cache" shortcut in wp-admin or allowing Editor-level users to purge the cache.

Important: because Edge Caching and StackCache already handle caching comprehensively at the server level, you generally shouldn't install additional WordPress caching plugins like WP Super Cache or W3 Total Cache — running both can cause conflicts rather than additional benefit.

Step 4: Advanced — Custom Cache-Control Headers (Optional)

For advanced users who want more granular control, StackCP's Dynamic Cache functionality can also respect custom Cache-Control and Expires headers set via a .htaccess file, letting you specify caching behaviour for content beyond what StackCache handles automatically. This isn't necessary for most websites and is worth exploring only if you're comfortable editing server configuration files or working with a developer.

Step 5: Test Your Site Speed Before and After

To see the real-world impact:

1. Use a free tool such as Google PageSpeed Insights or GTmetrix.
2. Test a page on your site and note the load time and Time to First Byte (TTFB).
3. Compare this against a test from before you enabled caching, if available, or simply track it going forward.

Visitors located far from your origin server typically see the biggest improvement, since their requests are now served from a much closer CDN node.

Common Mistakes Beginners Make

• Expecting extra configuration options that don't exist. Edge Caching itself really is just the one toggle — the more detailed control (expiry times per file type, exclusions) lives in StackCache for WordPress sites, not in the Edge Caching screen itself.
• Forgetting to purge after site updates. If changes don't seem to be showing, this is almost always the fix.
• Running an additional caching plugin alongside StackCache, which can cause conflicts rather than extra speed.
• Assuming caching alone fixes a slow site. Pair it with the Web Optimisation guide in this series for the biggest overall improvement.

Troubleshooting

"I enabled Edge Caching but my site doesn't feel faster." Give it a little time for full propagation, and test from a location genuinely distant from your server, since the benefit is most noticeable for far-away visitors.

"My recent changes aren't showing on the live site." Select Purge Everything in the Edge Caching section, then hard-refresh your browser or test in a private/incognito window.

"I'm not sure if I also need a WordPress caching plugin." You don't — our platform's guidance is explicit that Edge Caching and StackCache together are sufficient, and additional plugins like W3 Total Cache aren't needed and may conflict.

How Edge Caching Fits Into Your Overall Speed Strategy

Edge Caching is one part of a broader performance picture in StackCP. It's worth understanding how the pieces relate:

• Edge Caching solves distance — getting a copy of your static content physically closer to each visitor via the CDN network.
• StackCache (WordPress sites) solves dynamic content delivery — caching the actual generated page HTML so even logged-out, dynamic pages load quickly.
• Web Optimisation (Website Acceleration Suite) solves size — shrinking images, CSS, and JavaScript so there's less to download in the first place, covered in our companion guide.

Enabling Edge Caching alone helps meaningfully. Pairing it with Web Optimisation tends to produce the biggest overall jump in your PageSpeed scores, since you're both reducing file size and delivering from closer servers at the same time.

A Real-World Example

Imagine a small online stationery store based in India, with customers browsing from across the country and a growing number from the Middle East and Southeast Asia. Before enabling Edge Caching, a customer in Dubai loading a page with several images might experience a Time to First Byte in the hundreds of milliseconds, simply because of the physical distance the request has to travel to the origin server and back.

After enabling Edge Caching, that same Dubai customer's static assets — images, CSS, JavaScript — are served from a CDN node much closer to them on repeat visits, meaningfully cutting delivery time. Multiply that improvement across thousands of visits a month, and the cumulative effect on bounce rate and session duration can be substantial, from a single toggle.

Who This Is Available To

Edge Caching is included at no extra charge with enterprise cloud-powered Web Hosting, WordPress Hosting, Reseller Hosting, Agency Hosting, and Managed Hosting packages. As a hosting reseller, you (or your customers, depending on how you've configured their access) can toggle Edge Caching on a per-package basis — it isn't an account-wide setting, so it's worth confirming it's switched on for each individual website you or your customers manage, rather than assuming it applies automatically everywhere.