When talking about a software architecture I often get this question: "Is it encrypted?". A "No" is the bad answer as everybody assumes that the system is not secure. But after getting a "Yes", everybody just moves on believing that security is top-notch and everything is hacking-proof.

DynamoDB is a key-value store which means that every item needs a unique key and operations are per item. Because of this, what operations it supports and how it is best used is entirely different than SQL-based databases.

The premise of Nix shell is that it makes available a fixed version of tools. This solves a common problem: how to make sure that all developers use the correct NodeJS, Ruby, Java, and they all have things installed, such as graphviz, gimp, and so on?

In one of my projects I'm building a cache that works across workers. With that library, I can turn any function into a cached one where the cache key is calculated based on the arguments and if a given key is already finished then the stored result will be returned.