That's like, three logical fallacies tied together.
You've made an argument to authority with your lead-off sentence of "that's not how businessses are run" and a no true scotsman argument with "no sane person running a business", and then tied it up with an absurdo ad reductum analogy about security guards.
There are plenty of shops that I've personally worked with, and many more that I've read about here on HN that do daytime maintenance / make potentially breaking changes to production. I'd be willing to bet Heroku does a mix of day and night time scheduled maintenances, with scheduling determined by a reasoned analysis of the risks and potential for an outage.
If you think a 1 AM maintenance window helps anything, I'd bet you've never seen the sunlight come up as you staggered out of a datacenter 10 hours after your "midnight maintenance" went south, and no one with an optical light meter to help you trace down a dodgy fiber run was awakee at your transit provider, so you had to wait until the first shops opened to buy your own...
...ok, maybe I'm a little bitter. What I'm getting at is, a 1 PM outage - although more customer facing than a 1 AM outage - will almost definitely be resolved faster, because resources outside of the engineers performing the maintenance are in abundance at 1 PM and not 1 AM.
Bonus points: your engineers will not be zombies for the next three days, and that's important both for post-outage work and to make sure everyone stays sharp for the potential "bounce outage" (e.g. your first outage was the core router dying, the second will hit the same week when your new replacement core router's slightly upgraded IOS version causes a BGP flap under certain conditions that don't arise until a good 48 hours after you mail out your customer outage report....)
That might sound trivial, but at scale - if you have tons of engineers and are doing tons of maintenance all the time - it's actually really important, at least IMHO.
(Quick, take a guess - how many Heroku daytime maintenances do you think went off without a hitch that you've never heard of?)
P.S. what time zone are you in? I assume your time zone's 1 AM is the important one, so someone else on the other side of the country is going to either have a late evening or early morning maintenance window..... ;)
You've made an argument to authority with your lead-off sentence of "that's not how businessses are run" and a no true scotsman argument with "no sane person running a business", and then tied it up with an absurdo ad reductum analogy about security guards.
There are plenty of shops that I've personally worked with, and many more that I've read about here on HN that do daytime maintenance / make potentially breaking changes to production. I'd be willing to bet Heroku does a mix of day and night time scheduled maintenances, with scheduling determined by a reasoned analysis of the risks and potential for an outage.
If you think a 1 AM maintenance window helps anything, I'd bet you've never seen the sunlight come up as you staggered out of a datacenter 10 hours after your "midnight maintenance" went south, and no one with an optical light meter to help you trace down a dodgy fiber run was awakee at your transit provider, so you had to wait until the first shops opened to buy your own...
...ok, maybe I'm a little bitter. What I'm getting at is, a 1 PM outage - although more customer facing than a 1 AM outage - will almost definitely be resolved faster, because resources outside of the engineers performing the maintenance are in abundance at 1 PM and not 1 AM.
Bonus points: your engineers will not be zombies for the next three days, and that's important both for post-outage work and to make sure everyone stays sharp for the potential "bounce outage" (e.g. your first outage was the core router dying, the second will hit the same week when your new replacement core router's slightly upgraded IOS version causes a BGP flap under certain conditions that don't arise until a good 48 hours after you mail out your customer outage report....)
That might sound trivial, but at scale - if you have tons of engineers and are doing tons of maintenance all the time - it's actually really important, at least IMHO.
(Quick, take a guess - how many Heroku daytime maintenances do you think went off without a hitch that you've never heard of?)
P.S. what time zone are you in? I assume your time zone's 1 AM is the important one, so someone else on the other side of the country is going to either have a late evening or early morning maintenance window..... ;)