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infrastructure/exponential-backoff-why-waiting-longer-between-retries-keeps-a-struggl.md
Exponential backoff: why waiting longer between retries keeps a struggling server alive
When a server stumbles, every client that failed retries at the same instant, and the second wave can be bigger than the first. Exponential…
networks/tcp-how-a-network-that-drops-data-still-delivers-every-byte-in-order.md
TCP: how a network that drops data still delivers every byte in order
The internet underneath your apps drops data and makes no promise to deliver it. TCP adds the promise anyway: it numbers every piece, the…
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…
networks/packets-why-the-internet-cuts-your-message-into-numbered-pieces.md
Packets: why the internet cuts your message into numbered pieces
When you send a message online, it never travels as one block. The internet cuts it into small packets, each with a label saying where it…