tile

trait Config extends AnyRef
trait KamonTrace extends AnyRef
trait KamonTraceDirectives extends BasicDirectives
class Router extends LazyLogging with TileAuthentication with CommonHandlers with TileErrorHandler
trait TileAuthentication extends Authentication with Directives
trait TileErrorHandler extends Directives with RollbarNotifier with LazyLogging
implicit class withLayerCacheMethods[K, V] extends Config

object AkkaSystem
object KamonTraceDirectives extends KamonTraceDirectives
object LayerCache extends Config with LazyLogging with KamonTrace

ValueReaders need to read layer metadata in order to know how to decode (x/y) queries into resource reads.
ValueReaders need to read layer metadata in order to know how to decode (x/y) queries into resource reads. In this case it requires reading JSON files from S3, which are cached in the reader. Naturally we want to cache this access to prevent every tile request from re-fetching layer metadata. Same logic applies to other layer attributes like layer Histogram.
Things that are cheap to construct but contain internal state we want to re-use use LoadingCache. things that require time to generate, usually a network fetch, use AsyncLoadingCache
object Main extends App with Config
object StitchLayer extends LazyLogging with Config
implicit object UUIDJsonFormat extends RootJsonFormat[UUID]
package image
package routes
package tool