Hands-On Design Patterns with Kotlin

A replacement

When we discussed Creational Patterns, we already discussed the idea of expensive objects. For example, an object that accesses network resources, or takes a lot of time to create.

We at Funny Cat App (name invented by the canary Michael; remember him from the Flyweight pattern?) provide our users with funny cat images on a daily basis. On our homepage and mobile application, each user sees a lot of thumbnails of funny cats. When he clicks or touches any of those images, it expands to its full-screen glory.

But fetching cat images over the network is very expensive, and it consumes a lot of memory, especially if those are images of cats that tend to indulge themselves in a second dessert after dinner. So, what we would like ...