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A comment on I reverse engineered McDonalds’ internal API. Parent comment

Re:I reverse engineered McDonalds’ internal API by oh-4-fucks-sake on Thursday October 22, 2020 @08:14PM (#24864796)
Said another way:

  - You have a system whereby every instance has a 75%-79% uptime.

  - Each instance's 21%-25% daily scheduled maintenance window can (generally) be arbitrarily-scheduled by the ops team.
How do you near guarantee that there's always one instance available?

If you said:

  "manage a redundant cluster of at least 2 instances with non-overlapping maintenance windows"
Then you were correct!

BONUS QUESTIONS:

Q: What's the max number of ice cream machines found in a McDonald's location?

Q: What's the cluster size of the McDonald's ice cream monitoring system?

Q: How much money does McDonald's have?

Q: Why the fuck?

If you said: "1", "at least 3", "metric fuck-tons", and "I don't know", respectively, then you were correct!

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Re:I reverse engineered McDonalds’ internal API by throwaway373438 on Thursday October 22, 2020 @08:42PM (#24864961)
The answer to #4 is probably that the goal isn't to always have ice cream. The goal is to run a profitable business.

Doubling the cost of the ice cream infrastructure to avoid a 25% downtime may not be a profitable venture -- especially if the downtime is scheduled to occur while the store is closed.

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Re:I reverse engineered McDonalds’ internal API by dmix on Thursday October 22, 2020 @08:59PM (#24865057)
Shelf-space is in high-demand and those machines aren't cheap.
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Re:I reverse engineered McDonalds’ internal API by newforms on Friday October 23, 2020 @04:44AM (#24867265)
McDonalds is in the real estate business (letting buildings), fast food is just a side order.
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Re:I reverse engineered McDonalds’ internal API by justinclift on Friday October 23, 2020 @07:52AM (#24868473)
Aren't the stores franchise's, with the individual stores owned by the relevant franchisee?
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Re:I reverse engineered McDonalds’ internal API by maxerickson on Friday October 23, 2020 @08:32AM (#24868752)
The operations are mostly franchised, but the corp owns many of the buildings and plots of lands that they are located on.

https://www.mcdonalds.com/us/en-us/about-us/franchising/real...

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Re:I reverse engineered McDonalds’ internal API by peterwoerner on Thursday October 22, 2020 @10:50PM (#24865564)
Also, you can use data to schedule the maintenance when the probability of someone ordering ice cream is low. That 21-25% downtime results in significantly fewer people wanting ice cream not being able to get it.
[ Parent | on HN ]