Play

Play is based on a lightweight, stateless, web-friendly architecture.Built on Akka, Play provides predictable and minimal resource consumption (CPU, memory, threads) for highly-scalable applications. Play uses a fully asynchronous model built on top of Akka.

Combined with being stateless, Play scales simply and predictably. Play was built for needs of modern web & mobile apps. Play 2 is architected from the start under the assumption that every request is potentially long-lived. But that’s not all: play also need a powerful way to schedule and run long-running tasks.

The Actor-based model is unquestionably the best model today to handle highly concurrent systems, and the best implementation of that model available for both Java and Scala is Akka - so it’s going in. Play 2 provides native Akka support for Play applications, making it possible to write highly-distributed systems.

In Play it is really easy to use any data store driver, ORM, or any other database access library without any special integration with the web framework.It simply offers a minimal set of helpers to handle common technical issues, like managing the connection bounds, however, to maintain the full-stack aspect of Play Framework by bundling default tools to access classical databases for users WHO don’t have specialized needs, and that’s why Play 2 comes with built-in relational database access libraries such as Ebean, JPA and Anorm.