Re: good 404 vs bad 404

My gut feeling says you should treat this in monitoring, however here are some questions:

1) Why do you monitor 404s at all?

2) Could you give some examples of 404s that are valid or should be ignored?

Regards,

Antonis

Antonis Christofides  http://djangodeployment.com    

On 03/01/2017 11:42 AM, Andreas Kuhne wrote:

I think you should always report a 404 as a 404 regardless of the situation. 

The application shouldn't have to know if it is a valid 404 or an "invalid" - because from the applications point of view, the page (or item) couldn't be found. 

Just my 2 cents.

Regards,

Andréas 

2017-03-01 10:25 GMT+01:00 guettli <guettli76@gmail.com>:

In systems which are accessed only via intranet we used to monitor http 404 responses.

Every time a 404 happens, an issue in our monitoring gets created.

This worked well in the past.

Now we have cases where a 404 is valid or should be ignored. No issue in the monitoring should be visible.

You could apply "separation of concerns" and keep on reporting all 404 responses
and do the filtering in the monitoring area.

But on the other hand the code knows more. I have places where I know that
this 404 should be ignored.

I am biased where the problem should get solved:
 
 - inside django app
 - inside monitoring


What do you think?

Does anybody make a differenence between "good 404 vs bad 404"?

Regards,
  Thomas

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