When visiting the Down Detector site you will notice an ‘Error 503’ No healthy backends on-screen message.
The Down Detector on-screen message also shows Guru Mediation Details: cache-lhr6320-LHR 1422707006 2819328891, as well as ‘Varnish cache server’.
This is the site that provides information of all the sites that are down, it also provides comments from users having problems with that given site etc. Basically real-time insights for all services online such as Facebook, Charter, Twitter and thousands more.
When visiting Twitter, Down Detector users are tweeting asking what the message means, tweets popping up the most is ‘When will Down Detector be fixed’.
We here at OSM are seeing Error 503 No Healthy, others are also seeing this error but some see Error 506 No Healthy.
Are you seeing a Down Detector Error issue?