While developing your application, you might want to secure resources with authentication. Creating your own sign up and log in flow is boilerplate code you want to avoid. At this point, you can benefit from authentication mechanisms like OAuth. With OAuth you can integrate with another platform and users allow …

In our introduction to response caching we've motivated developers to integrate response caching to make their apps faster and reduce the used bandwidth. Integrating response caches has another positive side-effect: you can add a simple offline mode to your app! If your user is in a dark tunnel, you might …

In a previous tutorial you've learned how you can activate Retrofit's response caching. In this tutorial we'll explore how you access the cache files and use them to analyze the app's network and cache behavior. This can be very helpful during the development phase. {{outline}} Access Cache Files Before you …

Validations are built into hapi’s core and the framework has first class support for Joi, the schema validation framework. The overall validation setup for individual routes is very convenient and expressive, you’ll see that in a minute. The default behavior for failed validations is to send proper error …

For web based applications, there are various authentication mechanisms available. To let your hapi server support a selected one, pick a plugin from the hapi ecosystem, provide the required configuration and you’re ready to go. At some point, most of us hapi developers trap into an unknown authentication strategy …

Retrofit has the fantastic capability of automatically mapping server responses, no matter if XML, JSON or protocol buffers, to Java objects. This is super convenient for us developers. Of course, if you want, you can always skip the mapping and work with the raw server response. However, in rare cases …

In the first Retrofit caching tutorial we've given you an overview on how caching works and what steps are necessary to enable it for Retrofit. We've skipped one important information: how can you detect whether a response came from the cache, the server, or even both? In this tutorial, you'll …