Use the Decorator Pattern for Repository Caching and Cache Invalidation
In Swift, naturally
6 min readFeb 9, 2023
I’ve an example architecture that I’ve used for a while in these tutorials and for *other* uses. I quite like it as it conforms to the solid principles (more or less).
However, there is one thing that this architecture does not handle at all. It’s using a cache. I’ve used implementations of caching where placing the class in the code has been an afterthought and caused issues in the code, and that’s not good. Surely I can do better?
Difficulty: Beginner | Easy | Normal | Challenging | *Hard*
This article has been developed using Xcode 14.2, and Swift 5.7.2
- There are only two hard problems in computer science. Namely they are: Naming things and Cache invalidation
Prerequisites:
- You will be expected to be aware how to make a Single View Application in Swift.
- It might be worth looking over my architecture example, but don’t worry. I’ll cover the usage here.
- You might want to look at my decorator pattern in Swift example. Although I actually prefer the example here!
