1. Functional architecture is Ports and Adapters

• https://blog.ploeh.dk/2016/03/18/functional-architecture-is-ports-and-adapters/

In my experience, implementing a Ports and Adapters architecture is a Sisyphean task. It requires much diligence, and if you look away for a moment, the boulder rolls downhill again.

2. Algebraic Effects for the Rest of Us

• https://overreacted.io/algebraic-effects-for-the-rest-of-us/
• https://homepages.inf.ed.ac.uk/gdp/publications/alg_ops_gen_effects.pdf
• https://www.microsoft.com/en-us/research/wp-content/uploads/2016/08/algeff-tr-2016-v2.pdf
• https://github.com/ocamllabs/ocaml-effects-tutorial
• https://kcsrk.info/papers/eff_ocaml_ml16.pdf
• https://typelevel.org/cats-effect/

3. How to deal with side effects using Language-Ext

• https://github.com/louthy/language-ext/wiki/How-to-deal-with-side-effects

4. Cats = Category Theory for Scala

• ConcurrentEffect