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Matt Rickard mattrickard Service reliability math that every engineer should know Uptime 99.00000 99.90000 99.99000 99.99900 99.99990 99.99999 Downtime (Yearly) 3d 15h 39m 8h 45m 56s 52m 35s 5m 15s 31s 3s 9:53 AM Mar 8, 2021 Twitter Web App I View Tweet activity 3,598 Retweets 214 Quote Tweets 15.7K Likes ProarammerHumor.io