用户:NHC/2021年Facebook瘫痪事件
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2021年Facebook瘫痪事件(英语:2021 Facebook outage)发生在世界协调时间2021年10月4日15:39,社群网站Facebook及其子公司Messenger、Instagram、WhatsApp、Mapillary及Oculus(英语:Oculus (brand))在全球范围内超过7个小时无法使用。[1][2]还阻止了任何试图使用Facebook登录(英语:Log in with Facebook)的人访问第三方网站。[3]在此期间,由于大量用户改而涌向Twitter、Discord及Telegram等平台,曾导致这些应用程式的伺服器服务中断。[4][5][6]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/2/23/Facebook_is_down_-_Oct_4th_2021_12_06_13.jpg/640px-Facebook_is_down_-_Oct_4th_2021_12_06_13.jpg)
On October 4, 2021 at 15:39 协调世界时, the 社会网络 Facebook and its subsidiaries, Facebook Messenger, Instagram, WhatsApp, Mapillary, and Oculus(英语:Oculus (brand)), became globally unavailable for more than seven hours.[1][2] The outage also prevented anyone trying to use "Log in with Facebook(英语:Log in with Facebook)" from accessing third-party sites.[7] During the outage, many users flocked to Twitter, Discord, and 电报, resulting in disruptions on these apps' servers.[4][8][9] The outage was caused by the loss of IP转发 to the Facebook 域名系统 (DNS) servers, which were all self-hosted at the time.[10][4] 边界网关协议 (BGP) routing was restored for the affected prefixes at about 20:50, and DNS services began to be available again at 21:05 UTC, but application-layer services were slowly restored to Facebook, Instagram, and WhatsApp more than an hour later, with service generally restored for users by 22:45.[11]