Comment by kortilla
16 hours ago
> the AXD301 ATM switch achieved nine nines over a nine-month period using Erlang and BEAM in 2002. That calculates out to 24 milliseconds of downtime.
This is misleading. I had an old Dell computer in my garage hosting a php app that hit that level of uptime as well over a 9 month period. It was 100% so actually better.
Those uptime numbers only hold water when spread over many thousands to millions of users where you’re at large enough scale that you’re actually dealing with a meaningful volume of hardware failures.
Did you come from reddit? The switch in question is a backbone switch and those at the time served tens of millions of users.
How many do you serve?
Edit: either you are a troll or you have an affinity for hateposting on HN. Nothing positive have come from your comments.