Telilabs

Recent

• 4 Jul 2026

  OSI Model - The Internet Is Just Envelopes Thrown Away at Every Router

  I thought a packet was a little object that physically travels from my laptop to a server. It isn't. Only frames move — and they die at every hop.

  • networking
  • osi-model
  • tcp-ip
  • fundamentals
• 3 Jul 2026

  Observability - A Counter in RAM, an ID in a Header, and a Batch Export

  I thought observability was a logging system with fancy analysis on top. It isn't — and the difference lives at emission time, not in the dashboard.

  • observability
  • backend
  • opentelemetry