Independent technical notebook

Web delivery, explained clearly.

Short, practical notes on DNS, TLS and HTTP behaviour. The aim is simple: document what can be checked, what can fail, and how to reproduce a result.

Read the notes See the methods

Reference

Start with the layers

A slow page is not one measurement. Breaking a request into stages makes the cause easier to locate.

DNS

Check the record, resolver response and address family before testing the application.

TLS

Confirm the hostname, certificate chain, protocol version and renewal path independently.

HTTP

Separate connection setup, time to first byte and transfer rate instead of relying on one score.

Each method uses a short sequence that can be repeated from another network without special tooling.

This is a small reference project, not a commercial monitoring platform. Service notes describe observed state only.