Site priority

Not every site is a webshop that loses sales every minute it's down. Site priority tells WP Moo how much a site matters to you, so it watches the important ones more closely.

The four levels

Critical: big webshops and lead sites where an hour down costs real money.
High: webshops and busy sites with steady traffic.
Normal: company sites with forms and regular visitors. New sites start here.
Low: brochure sites with a handful of visits a month.

What each priority changes

How often pages are checked. Each page gets one visit per interval:

Critical: every minute
High: every 2 minutes
Normal: every 5 minutes
Low: every 15 minutes

A page with its own interval in Checks & pages keeps it, whatever the site's priority. The login page and sitemap follow a slower schedule: every 30 minutes for Critical, hourly for High, every 2 hours for Normal and every 4 hours for Low. You can't check them more often. On Critical, High and Normal you can pick a slower schedule.

When a page counts as slow. Server wait is the time between asking for a page and the first byte of the answer. A page gets the status Slower, with an Important problem, when its server wait stays above the limit for a while:

Critical: above 500 ms over 5 minutes
High: above 600 ms over 10 minutes
Normal: above 800 ms over 15 minutes
Low: above 1,500 ms over 30 minutes

We take the middle value of the checks in that time, so one slow visit doesn't count, unless a page's interval is that long or longer: then a single check can count. The limit on total time (3 seconds) is the same for every priority, judged over the same time.

What it doesn't change

The other speed limits (page size, number of redirects) are the same for every site, and make a page Slower too. The site checks, like SSL & certificate and Domain, run on their own schedule.

Where to set it

When you add a site, in step 2: "How bad is it if this site is down for an hour?"
Later, in the site's Checks & pages, under Site priority. The priority pill on the site's overview takes you there.

For your developer

A page's interval is its own interval when set, else the site priority's default (60, 120, 300 or 900 seconds). The login page and sitemap use 1800, 3600, 7200 or 14400 seconds, or their own interval when that is longer. The speed rules, per page run:

server wait, median over the window   > limit for the priority
total time, median over the window    > 3000 ms
page size                             > 2000 KB or < 20 KB
redirects before the page             > 2

A windowed rule waits until the page's runs cover the window, so a new page isn't judged on one run. A page whose interval is as long as the window or longer can be judged on a single run. More about these limits in Speed & size.

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