Delaying or defering side-effects

[olleharstedt]

Instead of writing to the database or file, create an event or closure to deal with it later.

https://martinfowler.com/eaaDev/EventSourcing.html

[olleharstedt]

Another post about similar concept: https://spin.atomicobject.com/2018/02/08/defer-side-effects/

[olleharstedt]

Cats effects for Scala: https://typelevel.org/cats-effect/docs/2.x/datatypes/io