Cache Busting Explained
Cache busting changes a file's address so browsers and CDNs fetch the new version. Compare query strings, versioned names and fingerprinting for static files.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
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By Maarten Soetens
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What Is LXC
LXC containers run a full Linux userspace on a shared kernel. Learn how these system containers differ from application containers and where LXD and Incus fit.
By Maarten Soetens
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WordPress GPL Licensing
The WordPress GPL license explained: how the GPL applies to themes and plugins, why premium products are sold and what nulled themes mean for licensing.
By Maarten Soetens
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chmod 755, 644 and 777
What does chmod 755 mean? Decode numeric Linux permission values like 644 and 777, see how each digit maps to rights, and why 777 is discouraged.
By Maarten Soetens
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Shared Mailbox vs Distribution List
Shared mailbox vs distribution list: a shared mailbox is one inbox several people work from, while a distribution list copies each message to every member.
By Maarten Soetens
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Is WordPress Free?
Is WordPress free? The software is, but domains, hosting, premium themes, plugins and developer time are not. See what running a WordPress site really costs.
By Maarten Soetens
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What Are PHP Extensions?
PHP extensions add features such as image processing, encryption and HTTP requests to PHP. Learn what they are and why a missing one can break an application.
By Maarten Soetens
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What Is DirectAdmin?
DirectAdmin is a commercial hosting control panel for Linux servers, known for a lightweight design. Learn its admin, reseller and user levels.
By Maarten Soetens
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RSA vs ECC Certificates
RSA vs ECC: compare RSA and ECDSA certificate keys on security per bit, speed and compatibility, and learn what key lengths mean for HTTPS in practice.
By Maarten Soetens
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SEO Spam Hacks
An SEO spam hack injects hidden pages and links to rank a site for unrelated terms. Learn how pharma and Japanese keyword hacks work and show up.
By Maarten Soetens
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Hidden Hosting Costs Explained
Hidden hosting costs include setup fees, paid backups, SSL upsells, migration fees and panel licences. Learn which extras to check before you sign up.
By Maarten Soetens
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Supply Chain Attacks
Plugin supply chain attacks reach sites through third-party plugins, themes or packages, often via abandoned, vulnerable or nulled components.
By Maarten Soetens