Discussion on: Web performance for a Frontend developer

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Boris Schapira

Hi Mohan,

TTI(Time To Interactive) as a performance budget is a tricky issue because the metric is neither simple to evaluate nor easy to act upon, making its usage very complicated when discussion web performance with different web actors.

– Our TTI is over budget!

– What's TTI?

– …

– Do you know what made it exceed the budget ?

– …

– What corrective measures can we apply?

– …

I wrote a piece on it (available on dev.to) and deeply recommend RUM metrics instead (like the distribution of First Input Delay) or Custom Metrics (for Synthetic Monitoring).