Coroutine Debouncer Usage

DebouncerUsage.kt

val debouncer = CoroutineDebouncer(ConcurrentHashMap())
...
/**
 * Gets list of menus for given restaurant ID
 *
 * @param id of the restaurant
 * @return list of menu items
 */
suspend fun getRestaurantMenus(id: Long) : List<Menu> {
    val cached = cacheL1.get(id)
    if (cached != null) {
	    return cached.toList();
    }
    
    val deferredFetch = debouncer.debounce("restaurant:$id") {
        fetchMenuFromRemoteCacheOrDatabase(id)
    }
    
    return deferredFetch.await()
}