3 ms·

What are those mythical systems where seven nines is unacceptable? What are the chances you're going to work on one of those? Google Spanner for example is up

by hbrn 4y ago

What are those mythical systems where seven nines is unacceptable? What are the chances you're going to work on one of those? Google Spanner for example is up to five nines. Are there a lot of systems that need to be three orders of magnitude more reliable than Google Ads?

lightbendover 4y ago
You're right, nothing is more important than serving ads.
- hbrn 4y ago
  Nothing is more profitable than serving ads. I'm still waiting for an answer.
  - lightbendover 4y ago
    While I have no idea what kind of distributed system would need 7+ 9s, there are plenty of solution providers who at least promise it as part of their marketing. I truly disbelieve that these companies don't have any point of failure within their system that would take them under that threshold, even if it hasn't been challenged to date, but that level of availability is still the published goal. Hopefully needless to say, but 99.9% is not acceptable for most "important" (and yes, advertising is important) applications outside of US-East-1 somehow. Quick examples, no experience with any of these: * https://www.infinidat.com/en/news/press-releases/infinidat-highlight-cutting-edge-enterprise-storage-solution-vmworld https://www.infinidat.com/en/news/press-releases/infinidat-h... * https://vindicia.com/blog/9999999-global-system-uptime/ https://vindicia.com/blog/9999999-global-system-uptime/ * https://www.ibm.com/downloads/cas/A856LOWK https://www.ibm.com/downloads/cas/A856LOWK Bad examples? Certainly yes. Are there any good examples? Maybe, doubtful. Does any system actually need 7 9s? Maybe, doubtful.
    - deleted 4y ago
      [deleted]