Effortless LRU Caching in Repositories: A 5-Step Guide

No more wasting API calls on restoring your state instantly.

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There are many variations of the Repository pattern in Android, just like any other Architectural Pattern, and can be bent according to the needs of the Software, but the core responsibility of Repository is to provide a clean API so that the rest of the app can retrieve it’s data easily.

They consume various data sources from the app to get the data. These data sources could be local models, web services, and caches.

In Today’s article is an example of how you can implement LRU caching into the repository so you can save some API/Database calls.

Step 1 : Create a Tracker for the source of the data. 🧑🏾‍💻

We need to have a field that can be used to figure out from which origin does the data source is being fetched from, for that you can use an Enum class.

// creating a enum for source of data
enum class SOURCE {
  CACHE…