TCP vs HTTP: What's the Real Difference and When Should You Use Each? Alternatively: TCP vs HTTP: Whic

Here’s a metaphor: TCP is the highway, HTTP is the cars. You care about cars (HTTP) unless there’s traffic (congestion) or potholes (packet loss).

For web apps, focus on HTTP. But if users complain about “slow connections,” that’s when you peek at TCP metrics. `ss -tuln` on Linux helps.