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infrastructure/from-localhost-to-production-what-deploying-your-code-really-means.md
From localhost to production: what “deploying” your code really means
Your app runs perfectly at localhost:3000, but the link does nothing on a friend's phone. That's because localhost means "this computer"…
networks/ip-addresses-and-ports-the-street-address-and-the-apartment-number.md
IP addresses and ports: the street address and the apartment number
Every message on a network needs two things to arrive: an IP address to find the right computer, and a port to find the right program on…