Calendars
Explore how the Gregorian calendar and various business cycles affect the design and load management of distributed systems for online retail. Understand predictable calendar patterns, retail season peaks, and their impact on system traffic and stability during critical launch periods.
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Julian Calendar
Over a 400-year cycle, the calendar dates vary by as much as 2.25 days, but they vary predictably and periodically. Overall, the error is cyclic, not cumulative. This calendar, decreed by Pope Gregory XIII, became known as the Gregorian calendar rather than the Lilian calendar. The Gregorian calendar was eventually adopted by all European nations, although not without struggles, and even by Egypt, China, Korea, and Japan (with modifications for the latter three). Some nations adopted this calendar as early as 1582, while others adopted it only in the 1920s.
Gregorian Calendar
Over a 400-year cycle, the calendar dates vary by as much as 2.25 days, but they vary predictably and periodically; overall, ...