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Fix the availability numbers (#3410)
* Update 102-availability-in-numbers.md Updated downtime #s using https://uptime.is/ * Update src/roadmaps/system-design/content/105-availability-patterns/102-availability-in-numbers.md * Update src/roadmaps/system-design/content/105-availability-patterns/102-availability-in-numbers.md --------- Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
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@ -7,10 +7,10 @@ Availability is often quantified by uptime (or downtime) as a percentage of time
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```
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Duration | Acceptable downtime
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------------- | -------------
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Downtime per year | 8h 45min 57s
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Downtime per month | 43m 49.7s
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Downtime per year | 8h 41min 38s
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Downtime per month | 43m 28s
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Downtime per week | 10m 4.8s
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Downtime per day | 1m 26.4s
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Downtime per day | 1m 26s
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```
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## 99.99% Availability - Four 9s
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@ -18,9 +18,9 @@ Downtime per day | 1m 26.4s
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```
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Duration | Acceptable downtime
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------------- | -------------
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Downtime per year | 52min 35.7s
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Downtime per month | 43m 49.7s
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Downtime per week | 1m 5s
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Downtime per year | 52min 9.8s
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Downtime per month | 4m 21s
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Downtime per week | 1m 0.5s
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Downtime per day | 8.6s
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```
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@ -50,4 +50,5 @@ If both `Foo` and `Bar` each had 99.9% availability, their total availability in
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To learn more, visit the following links:
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- [Availability in System Design](https://www.enjoyalgorithms.com/blog/availability-system-design-concept/)
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- [Availability in System Design](https://www.enjoyalgorithms.com/blog/availability-system-design-concept/)
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- [Uptime calculator: How much downtime corresponds to 99.9 % uptime](https://uptime.is/)
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