Uptime and downtime with 99.9 % SLA

The Uptime Challenge! Is there a programming language or some fancy old or new technology you'd like to try/learn, but lack that special useful something to use that tool on? Well, I've created an informal spec of the uptime calculator and invite everyone to participate in the #UptimeChallenge. The goal of the challenge is to implement the functionality in the whatever way you'd like (simple, complex, fast, slow, elegant, ugly, baroque, esoteric, client-server, service oriented, serverless, cloud native, whatever) while having fun at the same time. Once done, publish your work on your code forge of choice and tag it with #UptimeChallenge. The uptime challenge goes on as long as code gets written. Have fun!

[ simple / flexible / reverse / donate ]

Agreed SLA level: % (enter SLA level and hit the <enter> key)

SLA level of 99.9 % uptime/availability results in the following periods of allowed downtime/unavailability:

• Daily: 1m 26s
• Weekly: 10m 4s
• Monthly: 43m 49s
• Quarterly: 2h 11m 29s
• Yearly: 8h 45m 56s

Direct link to page with these results: uptime.is/99.9 (or uptime.is/three-nines)

The SLA calculations assume a requirement of continuous uptime (i.e. 24/7 all year long) with additional approximations as described in the source.

For convenience, there are special CEO and SEO friendly links for N nines: three nines, four nines, five nines, six nines etc.

---

–