Internet Signals

When you type a web address into your browser, your device doesn't always go straight to the live server. It often checks a local cache first, or it relies on a chain of servers that store a snapshot of the domain's records. That is why, after a site has been updated or moved to a new host, some visitors see the old layout while others see the new one. The culprit is almost always a process called DNS propagation, and understanding it can save you from thinking something is