LiteSpeed Cache
LiteSpeed Cache is a server-level cache with a WordPress plugin. Learn how it differs from PHP-only caching plugins and why some hosts promote it.
Knowledgebase
Clear answers to common hosting questions, written by our editors.
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By Maarten Soetens
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Linux Log Files
Linux log files record system, login, web server and mail events. Learn where they live in /var/log, how journald works and why log rotation matters.
By Maarten Soetens
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What Is llms.txt
llms.txt is a proposed file that gives AI models a curated summary of your site. Learn what it contains and how it differs from robots.txt and sitemaps.
By Maarten Soetens
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What Is Kubernetes
What is Kubernetes? An open-source system that schedules, scales and heals containers across many machines. Learn how it works and when you need it.
By Maarten Soetens
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Frontend vs Backend
Frontend vs backend explained: frontend builds what visitors see, while backend handles data and server logic. Learn each role and how the two work together.
By Maarten Soetens
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What Is Cumulative Layout Shift
Cumulative Layout Shift (CLS) measures unexpected movement of page content. Learn how the score is calculated, its common causes and a good value.
By Maarten Soetens
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VM Snapshots Explained
A VM snapshot saves a virtual machine's disk and optionally its memory at one moment so you can roll back. See how copy-on-write works and its limits.
By Maarten Soetens
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Database Sharding
Database sharding splits rows across several servers using a shard key. Learn how it works, when a database needs it and its main trade-offs.
By Maarten Soetens
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HTTP Status Codes in APIs
HTTP status codes API responses show success or failure. Learn what 200, 201, 401, 403, 404, 422, 429 and 503 mean and how clients should respond.
By Maarten Soetens
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What Is a Context Window
A context window is the amount of text an AI model can consider at once. Learn what happens when it fills up, how it affects cost and chatbot memory.
By Maarten Soetens
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Product Variants and SKUs
Product variants and SKUs explained: how simple and variable products, attributes and stock-keeping units structure an online catalogue and stock records.
By Maarten Soetens
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What Is PostgreSQL?
What is PostgreSQL? Explore its standards compliance, JSONB support, extensions such as PostGIS, and the typical use cases for this open-source database.
By Maarten Soetens