X-Robots-Tag Header
The X-Robots-Tag is an HTTP response header that sends indexing instructions from the server. Learn when it helps with PDFs, images and whole directories.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
-
By Maarten Soetens
-
What Is Page Load Time
Page load time explained: what the load event measures, how fully loaded and perceived load differ, and why one number rarely tells the whole story.
By Maarten Soetens
-
What Is php.ini?
php.ini is PHP's main configuration file. Learn the settings hosting users meet most, such as upload limits and execution time, and why hosts restrict them.
By Maarten Soetens
-
Primary vs Foreign Keys
Primary key vs foreign key: a primary key uniquely identifies each row, while a foreign key links to another table. Learn how keys keep data consistent.
By Maarten Soetens
-
What Is a VPC?
A virtual private cloud (VPC) is an isolated network inside a cloud provider. Learn about subnets, route tables, security groups and public vs private subnets.
By Maarten Soetens
-
What Is WordPress
What is WordPress? Learn how this free, open-source CMS began as a blogging tool, how themes and plugins work and what kinds of sites people build with it.
By Maarten Soetens
-
HTTP Status Codes for SEO
HTTP status codes SEO basics: learn what 2xx, 3xx, 4xx and 5xx responses tell search engines about a page, and how servers should respond when things go wrong.
By Maarten Soetens
-
What Is OAuth?
OAuth 2.0 is an authorization standard that lets apps reach user data without passwords. Learn its roles, tokens, flows and how it differs from OpenID Connect.
By Maarten Soetens
-
Database Tables
Database tables explained: how rows (records), columns (fields) and data types organize information in a relational database, with a simple example.
By Maarten Soetens
-
TypeScript vs JavaScript
TypeScript vs JavaScript: TypeScript adds static types and a compile step. Learn the trade-offs, and when teams choose TypeScript over plain JavaScript.
By Maarten Soetens
-
Rolling vs Fixed Release
Rolling release vs fixed release: learn how each Linux update model affects stability and software freshness, and why servers often use fixed releases.
By Maarten Soetens
-
WordPress Database Tables
WordPress database tables explained: what wp_posts, wp_postmeta, wp_options and other core tables store, and why autoloaded options can affect site speed.
By Maarten Soetens