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infrastructure/rolling-deploys-how-a-website-updates-without-going-offline.md
Rolling deploys: how a website updates without going offline
How does a busy website switch to a new version without going offline? Not by replacing everything at once. A rolling deploy updates one…
infrastructure/what-is-a-load-balancer-one-web-address-many-servers.md
What is a load balancer? One web address, many servers
When you open a popular website you type one address, yet many servers stand behind it. Something has to decide which one answers you. That…