Laboratory · Browser Lab
What happens when you load a URL?
Briefing
Between pressing Enter and seeing content, how much of the delay is network, how much is the server, and how much is your own JavaScript?
The interview question, run as an actual experiment: every hop, with a stopwatch on it.
- Laboratory
- Browser Lab
- Level
- ENGINEER
- Estimated time
- 14 minutes
- Method
- simulation
- Variables under observation
- DNSTCPTLSTTFBcritical rendering pathround trips