RestaurantApp simulates behind the scene of getting data from database or local storage (cache). In this app, we learn how polymorphism can facilitate us to write automated test. And we also learn how to simulate image download process in different thread.
RestaurantLoader dependency diagram:
HTTPClient dependency diagram:
runnable = () -> {
System.out.println("Downloading...");
imageDownloader.load();
try {
Thread.sleep(10000);
System.out.println("Downloaded");
} catch (Exception e) {
System.err.println(e);
}
};
Try to hit the back-end
Downloading...
Load from database
Load from cache
Try to hit the back-end
Download restaurant image from database
Downloaded