Links disappear quietly: how monitoring catches it

Nobody sends a notice when your link is removed. Pages get edited, redirected, and unpublished, and the usual way to find out is noticing months later.

4 min read

The short version

  • Every known backlink carries its own next check time, and a sweep runs every six hours to check whatever is due.
  • Check frequency backs off as a link proves durable: roughly daily while new, weekly once established, monthly once stable.
  • Each check records whether the link is present and whether it is dofollow or nofollow — a link changed to nofollow is a real event, not an unchanged one.
  • Won and lost links both trigger an email alert, so a removal surfaces in days rather than at the next audit.
  • Every check is stored as history, so a link that flickers is distinguishable from one that is genuinely gone.

Earning a link is the part everyone measures. Keeping it is the part nobody watches.

Pages get edited during a content refresh, and your entry does not survive the cut. Sites migrate and the article becomes a redirect. A section gets rewritten and someone converts every outbound link to nofollow as a policy. A publisher folds and the domain lapses. In none of those cases does anyone tell you. The link simply stops existing, and you find out at the next audit — if there is one.

Monitoring is built around a single field on each known backlink: when it should next be checked. A schedule runs every six hours, collects the links that are due, and fans out an individual check for each.

This shape matters more than it might appear. Sweeping everything on a fixed cadence means either checking stable links far too often or checking new ones far too rarely. Storing the next check per link makes the cadence a property of the link, which is what lets it vary sensibly.

The cadence backs off

A link that was published yesterday and a link that has survived a year are not equally likely to vanish next week, and checking them equally often would be a waste at one end and negligence at the other.

StageIntervalWhy
NewAbout every 24 hoursFresh links are the volatile ones. Editors revise a post in the days after publishing, and a placement removed in review should be caught immediately.
EstablishedAbout weeklyThe link has survived the editing window. It is probably real, and no longer needs daily attention.
StableAbout monthlyA link that has held for a long time rarely disappears next week. Monthly catches migrations and redesigns without wasting requests.
Re-check cadence by how long a link has been live.

Freshly won links are volatile and worth watching closely. A link that has survived a year rarely vanishes next week — the check schedule should reflect that, not average it.

What a check actually looks at

A check fetches the page and looks for a link to your site. It resolves two separate questions, and conflating them would hide a common and consequential change:

  1. 01

    Is the link still there?

    The page is fetched and inspected for a link pointing to your domain. A page that no longer resolves, or that resolves without the link, is a loss.

  2. 02

    Is it still dofollow?

    A link converted to nofollow is still a mention and no longer the same asset. It is recorded as a distinct status rather than being counted as unchanged — or, worse, as lost.

Backlink check cadence

Swept every 6 hours · each link carries its own next check

New

~24 hours

The editing window. Placements cut in review are caught the next day.

Established

~weekly

It survived the revisions. Probably real.

Stable

~monthly

Catches migrations and redesigns without re-fetching daily.

Live

Present and dofollow

Nofollow

Still a mention, no longer the same asset

Lost

Gone — you get an email

Every check is kept. A single failed fetch surrounded by successful ones reads as an anomaly, not as a lost link.

A monitored link and its check history. The cadence lengthens as the link proves durable, and every check is kept.

History, not just current state

Every check is written to a history, not just applied to the link's current status. That is what makes the record useful rather than merely current.

The web is unreliable in ways that look exactly like link loss: a site is down for twenty minutes, a CDN serves an error, a page ships broken markup for an afternoon. Without history, one bad fetch reads as “link lost.” With it, a single anomalous check surrounded by successful ones is visibly an anomaly, and a link that went missing three weeks ago and never came back is visibly gone.

Checks are also retried on transient failure, so a momentary network problem does not become a false alarm in the first place.

Alerts when it matters

Two events are worth interrupting you for, and both send an email:

  • A link went live. The placement you pitched is confirmed. It is the moment the work paid off, and it is also the moment to thank the person who made it happen.
  • A link was lost. The window in which you can do something about it is measured in days. An email that has just been quietly cut can often be restored with a short, friendly note; the same note six months later is a cold pitch to someone who has forgotten you.

Why this closes the loop

Discovery, qualification, contacts, and outreach all point one direction: getting a link placed. Monitoring is what turns that into something you can actually report on.

Without it, a link-building programme measures effort — emails sent, replies received, placements agreed. With it, the measure is what survived, which is the only number that corresponds to the value being claimed. It also produces the honest version of the story: not “we earned forty links this year,” but “we earned forty and thirty-four are still live, and here is when the other six went.”

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