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The game platform Roblox had an outage around October 2021, during their Chipotle Event. Many users thought it was because of the event, because it received massive reception, as users could get a free Chipotle burrito during it. The outage was Roblox's longest downtime, lasting 3 days. [10] [11] [12]
Website monitoring services usually have a number of servers around the globe – South America, Africa, North America, Europe, Africa, Asia, Australia and other locations. By having multiple servers in different geographic locations, a monitoring service can determine if a web server is available across continents over the Internet.
The subject of the terms is thus important here: whether the focus of a discussion is the server hardware, server OS, functional service, software service/process, or similar, it is only if there is a single, consistent subject of the discussion that the words uptime and availability can be used synonymously.
It is also supported by major web servers over Transport Layer Security (TLS) using an Application-Layer Protocol Negotiation (ALPN) extension [10] where TLS 1.2 or newer is required. [ 11 ] [ 12 ] HTTP/3 , the successor to HTTP/2, was published in 2022. [ 13 ]
Uptime is a measure of system reliability, expressed as the period of time a machine, typically a computer, has been continuously working and available. Uptime is the opposite of downtime . Htop adds an exclamation mark when uptime is longer than 100 days.
It monitors system conditions like bandwidth usage or uptime and collect statistics from miscellaneous hosts such as switches, routers, servers, and other devices and applications. It was initially released on May 29, 2003 by the German company Paessler GmbH which was founded by Dirk Paessler in 2001.
Time at the server when the request arrived, in NTP timestamp format. Transmit Timestamp (xmt): 64 bits Time at the server when the response left, in NTP timestamp format. Extension Field: variable Optional field(s) for NTP extensions (see [5], Section 7.5). Key Identifier: 32 bits Unsigned integer designating an MD5 key shared by the client ...
$ uptime 14:34:03 up 10:43, 4 users, load average: 0.06, 0.11, 0.09 The w and top commands show the same three load average numbers, as do a range of graphical user interface utilities. In operating systems based on the Linux kernel , this information can be easily accessed by reading the /proc/loadavg file.