Measuring and Encoding Information

Information is all around us. It makes up our thoughts and ideas, who we are, what we do, the knowledge we gain from the books we read, the music we listen to, and the smells we smell. It includes everything we perceive from our senses, as well as everything we don’t. It’s everywhere, just as light or gravity is. And like light or gravity, we can measure information. Much like we can measure distance using a unit such as meters, or temperature in units such as kelvin or celsius, there is a fundamental unit for measuring information. This unit is named bits. ...

August 15, 2020 · 9 min · 1723 words · Steven Polley

Restic - Backups Done Right

I’ve been searching for a file-level backup solution that ticks all the boxes, specifically: Efficient - something that only copies differential data when performing backups Secure - Encryption of data at rest and in-flight Deduplication - Only store blocks of data once and use pointers to reference it Storage Provider Support - Ideally NFS out of the box or even rsync, but hey if it supports the typical cloud providers too that’s a bonus Trustworthy - Ideally free and open so that I can audit the source Easy - I don’t want to invest an hour learning how to use it at scale Ideally free Man, let me tell you - there are not a lot of options out there that meet all these requirements - but I stumbled upon restic, and it seems to be the best option I’ve come across. ...

January 26, 2020 · 5 min · 1026 words · Steven Polley