If you want to get good at system design,

learn these 8 network protocols:

1 Hypertext Transfer Protocol Secure (HTTPS)

↳ It's used for secure communication over the internet

↳ It encrypts HTTP traffic using Transport Layer Security

↳ But it needs TLS certificates and extra setup

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2 User Datagram Protocol (UDP)

↳ It's used in gaming, video calls, and live streams

↳ It sends packets without waiting for replies for speed

↳ But there's a risk of losing or reordering data

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3 Transmission Control Protocol (TCP)

↳ It's used on websites, emails, and file downloads

↳ It opens a connection and checks each packet

↳ It ensures reliable and ordered delivery

↳ But adds delay and overhead

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4 Internet Protocol (IP)

↳ It's used to send data packets across the internet

↳ It adds the source and destination addresses to each packet

↳ It's fast, but doesn't ensure delivery or the correct order

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5 Secure File Transfer Protocol (SFTP)

↳ It's used to send files securely between systems

↳ It runs over SSH and encrypts the session

↳ But it won’t work with plain FTP tools

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6 Simple Mail Transfer Protocol (SMTP)

↳ It's used to send emails between mail servers

↳ But it doesn’t handle inbox access

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7 Secure Shell (SSH)

↳ It's used to access a remote server securely

↳ It opens an encrypted channel using keys or passwords

↳ But it's necessary to manage keys properly

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8 Domain Name System (DNS)

↳ It maps site names to IP addresses

↳ It queries DNS servers to find the server

↳ It makes the internet human-friendly

↳ But it adds latency to the first request

What else should make this list?