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HTTP 301 Moved Permanently

The resource has a new permanent URL. Free reference, no signup.

301 Moved Permanently

MeaningThe resource has a new permanent URL.
WhenThe site moved a page or the server is forcing a canonical host or HTTPS.
CausesRedirect rules, a trailing slash, or http to https.
FixUpdate the client to the URL in Location if the redirect is unexpected.
RetryFollow the redirect. Do not alert on a single hop.
Alert?No. A permanent redirect is navigation, not downtime.

Runs in your browser. Nothing you enter is stored.

Most 301s are not an incident

A permanent redirect is navigation, not downtime.

curl -sS -X POST https://api.trigv.com/v1/events \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer $TRIGV_API_KEY" \
  -d '{"channel":"ops","title":"HTTP 301","level":"warning"}'
Get an API key All status codes

How to use it

  1. Read what 301 means before changing a retry loop.
  2. Check the common causes against the response body and the server log.
  3. Follow the retry note. Retrying a 400 with the same body will fail again.
  4. Alert only in the cases the verdict describes.

About this tool

HTTP 301 Moved Permanently means The resource has a new permanent URL. Servers send it when The site moved a page or the server is forcing a canonical host or HTTPS.

Common causes: Redirect rules, a trailing slash, or http to https. The practical fix is: Update the client to the URL in Location if the redirect is unexpected.

Retry: Follow the redirect. Do not alert on a single hop.

Alert on it? No. A permanent redirect is navigation, not downtime.

Trigv is a push for the moment a status starts mattering, not a log of every response. If the code is one you should hear about, the snippet posts a single event with level error or warning. The status page itself does not call your API.

Questions

What is HTTP 301?

The resource has a new permanent URL.

Should the client retry?

Follow the redirect. Do not alert on a single hop.

Should I alert on it?

No. A permanent redirect is navigation, not downtime.

How is this different from reading the spec?

The page adds a plain retry note and an alert verdict for people running the service, not only for people parsing the response.

302 Found The resource is temporarily at another URL. 304 Not Modified The cached copy is still valid. 307 Temporary Redirect The resource is temporarily elsewhere, and the method must stay the same. Cron Job Alert Script Wrap a command so a failed, slow, or finished cron job sends a Trigv alert.