# WARNING I'm working on an updated version of this course. Expect it to be published by January/February 2021.

**The new course will contain:** 1. Kotlin 1. MVVM 1. Hilt for Dependency Injection 1. Navigation Components 1. Flow and StateFlow 1. Jetpack Compose 1. Datastore 1. Room 1. Retrofit2 The new course will be considered a *beginner course*. # Introduction In this course you'll learn how to build a local database cache with SQLite and Room. The cache retrieves data from a REST API using Retrofit2. Architecture is MVVM.

The app used to retrieve the data from Food2Fork.com, but that website has been shutdown. A Codingwithmitch.com community member stripped the data and published to this heroku app: recipesapi.herokuapp.com. Special thanks to Simran doing this!

Example request: http://recipesapi.herokuapp.com/api/search?q=chicken

Here's the specifics of what you will see in the course:

Caching data for when the network goes offline
Reading cached data when the network is down
Custom SQLite queries using Room
Customizing the cache (how long data will live in the cache)
How Retrofit caching works
Why SQLite and Room is better for caching than Retrofit
How to design a database cache
- There is no "one size fits all"
- Retrofit is better for some things but room is better for others
How Glide caching works
Glide RecyclerView Preloader (Customizing how many list items get cached)
Dealing with Network Errors and slow network speeds
OkHttp Network Timeouts
Converting Retrofit Calls to LiveData (Call Adapters)
And much more...

Architecture Diagram

Local Database Cache with REST API

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