Where can I find statistics on VKontakte crashes?

Question

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Good afternoon dear masters. Please tell me where can I find statistics (preferably official) on failures and errors of the VKontakte social network for 2014 and 2015?

Answer 1

vk.com/dev/health
Here?

Answer 2

Long contact failures (> 1 hour) are clearly visible on the loading of traffic exchange points . If you see a traffic drop of about 30-40%, most likely it has stopped) For example, it happened in early January 2014)