Month: August 2018
My build is slow: understanding resource limits and steal time in the cloudy world of cloud
I earlier wrote about steal time, the concept of “my image wants to use time but its not available due to some unknown noisy neighbour stealing it”. In a nutshell, you have a server with X resources. You then ‘sell’ 10X to your users, making it 10:1 oversubscribed. The Internet industry of late has been…
Tales from the road: the pantless seat-mate
This happened a couple of years ago, and I thought I would share it with the crowd. I’m on a flight (British Midland, BMI) from Amsterdam to London. I have an aisle seat nearish the back of the plane. For those who haven’t flown this route, its usually full of hungover British lads on their…
History in photos: my new office
So I’ve been schlepping a new business off the ground. And this time I’m taking a more incremental approach (cuz I’m a lot older and have less energy!). One of the strategies I’ve taken is to work in a ‘coworking’ space. And I’ve chosen one of the premier ones in our region, the Communitech Data…
Ceph in the city: introducing my local Kubernetes to my ‘big’ Ceph cluster
Ceph has long been a favourite technology of mine. Its a storage mechanism that just scales out forever. Gone are the days of raids and complex sizing / setup. Chuck all your disks into whatever number of servers, and let ceph take care of it. Want more read speed? Let it have more read replicas.…
Downward scaling the cloud
One of the things you will find as you go on your journey through the cloud is that the downward-scalability is very poor. Cloud is designed for a high upfront cost (people time and equipment $$$). But after that, it scales very linearly for a long way. This is great if you are a cog…
