Topic
Performance
Network performance tools and techniques for a faster, more reliable connection.
4 articles
What is a load balancer? Plain-English guide to scaling traffic
When one server can't handle the traffic, you put a load balancer in front of many. Here's how load balancers work, what algorithms they use, and where they fit alongside CDNs and DNS.
How HTTP/3 changed the web (and why you didn't notice)
HTTP/3 quietly replaced TCP with UDP and rewrote the assumptions of decades-old web infrastructure. Here's what changed, why it's faster, and why your browser is probably already using it.
How CDNs work: the invisible layer that makes the web fast
Most popular sites are served by a Content Delivery Network — a global cache layer between you and the origin server. Here's what CDNs actually do, why they speed up the internet, and how the major ones differ.
Best free public DNS servers in 2026
Your ISP's DNS is fine, but public DNS servers like Cloudflare 1.1.1.1, Google 8.8.8.8, and Quad9 9.9.9.9 are usually faster, more private, and easier to remember. Here's how they compare.