What Is Largest Contentful Paint
Largest Contentful Paint (LCP) measures when the biggest visible element loads. Learn which element counts, its four sub-parts and common causes.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
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By Maarten Soetens
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Headless Servers
A headless server runs without a monitor, keyboard or graphical desktop. Learn why most servers are headless, what they gain and how administrators manage them.
By Maarten Soetens
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What Is systemd?
systemd is the init system and service manager used by most major Linux distributions. Learn how it starts services, uses units and timers, and records logs.
By Maarten Soetens
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Linux Package Managers
A Linux package manager installs, updates and removes software from trusted repositories. Learn how APT, YUM and DNF handle packages and dependencies.
By Maarten Soetens
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Excessive DOM Size
Excessive DOM size happens when a page has too many or too deeply nested elements. Learn why this slows styling, layout and taps on a website.
By Maarten Soetens
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What Is Terraform?
What is Terraform? An infrastructure as code tool that describes cloud resources in configuration files. Learn how providers, state and plan and apply work.
By Maarten Soetens
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Custom Hosting Panels
A custom hosting control panel is built by the host itself rather than bought from a vendor. Learn why hosts build them and what it means for customers.
By Maarten Soetens
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Email Encryption: TLS, S/MIME, PGP
Email encryption protects messages from being read in transit or by others. Compare TLS, S/MIME and PGP, and see what each one protects and what it leaves open.
By Maarten Soetens
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WAF vs Firewall Compared
WAF vs firewall: a network firewall filters connections, while a WAF inspects web requests inside them. Compare what each sees and why sites need both.
By Maarten Soetens
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What Is Load Testing?
Load testing website performance uses simulated traffic to show how response times, error rates and server limits change as visitor numbers grow.
By Maarten Soetens
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File Permissions Security
File permissions security matters because overly open settings and wrong ownership let attackers change or read site files. Learn which files need limits.
By Maarten Soetens
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What Is a Webhook?
A webhook is an HTTP callback that pushes an event to your server as it happens. Compare webhooks with polling and learn about signatures and retries.
By Maarten Soetens