“With economies of scale come failures at scale. You can’t have it both ways.”
“This is especially important for Web 2.0 companies - the infrastructure is the platform – is the product – is the revenue.”
“To be eligible for Red Hat Cloud Access, a customer must: Have a minimum of 25 active subscriptions and move only not currently used Red Hat Enterprise Linux Advanced Platform Premium and/or Red Hat Enterprise Linux Server Premium subscriptions and have a direct support relationship with Red Hat.”
Wow RedHat is going out of their way to make it difficult to buy their product here. I was just thinking “centos6 is taking forever, what if I just went ahead and payed for redhat?” No, you must be this tall (already spending five-figures/year with them) to enter.
“Conceptually I group them as
The fermions
1) CPU space
2) Memory space
3) Disc spaceThe bosons
4) Memory bus IO
5) Disc IO
6) Network IOThis in my mind forms the 6 Utilities that we must have fine-grained, differential controls and metrics on in a “cloud computer” that fairly serves many people. We have to understand the possible minimum and maximum values, and we have to figure out how to balance them all with real workloads.
”
Fermions, Bosons and the 6 Utilities « Joyeur
I was thinking about this old post today so figured I’d dig it up and link to it. You need to understand those six resources to scale web clusters. Buying lots more #1 does not solve a #5 problem.
“by my calculations the peak of the bubble will be June 17, 2013, around 10:17 a.m. EST.”
“A mess is not a technical debt. A mess is just a mess. Technical debt decisions are made based on real project constraints. They are risky, but they can be beneficial. The decision to make a mess is never rational, is always based on laziness and unprofessionalism, and has no chance of paying of in the future. A mess is always a loss.”
“If you want your own custom 404 error page to be displayed when a visitor reaches a non-existent page, you need to make sure that your page is larger than 512 bytes. Otherwise, Chrome will ignore your page and use its internal 404 error page.”
6 Things Every Webmaster Should Know About Google Chrome (thesitewizard.com)
Just learned this the hard way.
“One initial thing that changed, that started the real progress, was to align dev and ops in a way that prevented local optimization; putting devs on call for their own software. This started to shift ops from being the people that just dealt with all the problems to people that became experts on all the services that allow the software to run. Ops started to become tier 2, escalation for devs.”
“Light up a reefer in the data centre, and Halon asphyxiation will be the least of your problems.”