When time to first byte is worth the effort

There is no clever trick in this one, just a handful of decisions worth making deliberately. Time to first byte is not free, and pretending otherwise leads to bad decisions.

Speed is a feature people notice only in its absence, and then they leave rather than complain. The teams that stay on top of it are the ones who put it on a calendar rather than a wish list.

When it is worth it

Slow server response caps how fast the page can ever be. The cost of getting this wrong is rarely visible on the day it happens. It is worth deciding this deliberately rather than inheriting whatever the last person set up.

When it is not

If nothing downstream depends on it and nobody is complaining, it can wait. The teams that handle this well are rarely the ones with the biggest budgets.

How to decide

Cheap shared hosting shows up here first. Small and consistent beats large and occasional here. Budget a little time for it every quarter and it never becomes a project of its own.

How to tell if yours is fine

Performance work is mostly subtraction, which makes it unpopular and effective. Three things worth confirming about time to first byte before you move on:

• Someone can say what the current setup is without going to look
• Slow server response caps how fast the page can ever be — and you know whether that is true here
• There is a way to tell whether the last change to this helped

If you want a second opinion on how yours is set up, ask.