Deploying a Scala Play Application to Heroku

1. play-samples

   1 8 - -

   To keep things simple, I’m starting with an existing sample project: the Play Scala REST API example. It’s a small application that exposes a few endpoints for creating and retrieving blog posts. All the data is stored in memory, so there’s no database to configure — perfect for testing and deployment experiments.

2. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

3. scala-api-heroku

   2 1 0 2.1 Scala

   

   To make things easier for this walkthrough, I’ve cloned that sample repo and made a few tweaks to prep it for Heroku. You can follow along using my GitHub repo This isn’t a production-ready app, and that’s the point. It’s just robust enough to explore how Play works and see what running and deploying a Scala app actually feels like.

4. scala

   3 50 14,389 9.7 Scala

   Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3

   

   I’ve been a web developer for years, but I haven’t touched Java in a long time — like, late-90s long. Back then, Java development felt cumbersome: lots of boilerplate and complex configurations. It was not exactly a pleasant experience for building simple web apps. So when I recently started exploring Scala and the Play Framework, I was curious more than anything. Has the Java developer experience gotten better? Is it actually something I’d want to use today?

5. Play

   4 33 12,583 9.7 Scala

   The Community Maintained High Velocity Web Framework For Java and Scala.

   

   ~/project$ sbt run [info] welcome to sbt 1.10.6 (Ubuntu Java 17.0.14) [info] loading settings for project scala-api-heroku-build from plugins.sbt... [info] loading project definition from /home/alvin/repositories/devspotlight/heroku/scala/scala-api-heroku/project [info] loading settings for project root from build.sbt... [info] loading settings for project docs from build.sbt... [info] __ __ [info] \ \ ____ / /____ _ __ __ [info] \ \ / __ \ / // __ `// / / / [info] / / / /_/ // // /_/ // /_/ / [info] /_/ / .___//_/ \__,_/ \__, / [info] /_/ /____/ [info] [info] Version 3.0.6 running Java 17.0.14 [info] [info] Play is run entirely by the community. Please consider contributing and/or donating: [info] https://www.playframework.com/sponsors [info] --- (Running the application, auto-reloading is enabled) --- INFO p.c.s.PekkoHttpServer - Listening for HTTP on /[0:0:0:0:0:0:0:0]:9000 (Server started, use Enter to stop and go back to the console...)

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