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play framework
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Migrating to Play Framework 3: Handling Changes from Akka to Apache Pekko
Previously, Dmitriy Chuprina provided guidance on building a basic application demonstrating authentication and authorization processes utilizing JSON Web Token (JWT), but in September 2022, Lightbend Inc. changed the Akka license model from the Apache 2.0 license to the Business Source License (BSL)…
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How to create RESTful API with Scala, Play, Silhouette and Slick
We are going to create a simple application which shows how to work with authentication/authorization with use of JSONWeb Token (JWT). There will be sign in, sign up, change password endpoints, and all data will be persisted…
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GraphQL Subscriptions on WebSockets for Scala applications
Say, you’ve subscribed to a popular blogger who publishes articles about web development on Medium, and whenever this blogger shares a new post, Medium sends you a notification. How can you develop this functionality for your Scala…
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How to Test and Debug a GraphQL API in Scala
How do you test and debug Scala applications that use GraphQL? It’s very easy to start, and in this article we show you how. We also show the interactions between the applicationcomponents starting from receiving the GraphQL…
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Best Practices for Processing HTTP Headers and Cookies in a Scala GraphQL API
In this article, you’ll become familiar with a way to interact with HTTP headers and cookies when using GraphQL, Play 2 Framework and Sangria in a Scala application. When we’re writing a RESTful API with Play 2,…
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Error Handling in a GraphQL API built with Scala and Sangria
If execution of a GraphQL query in your Scala application goes wrong for whatever reasons, Sangria will respond to the client with the message Internal server error, which is hardly helpful. Default error handling in Scala applications powered…
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How to Create a GraphQL API with Scala and Sangria
If you’re thinking about trying out GraphQL in your Scala application in a bid to optimize the network throughput, thenyou picked out the right time. The technology has matured a lot since 2012, and we can use…
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How to Use HTTPS with Play Framework
If you want to use HTTPS with your Scala application based on Play Framework 2.3 (or lower), then it’s not possible to just enable this secure protocol in the configuration file, which you can do with the more recent…
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Tracking Email Status with Amazon SES and SNS in a Scala Application
How do you configure Amazon Simple Email Service (SES) to not only send emails, but also to receive email statuses such as sent, delivered, or read? Amazon SES can only receive the status of emails it delivered, but it can’t…
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How to Configure Your Application for Different Environments with Play Framework
Managing application configurations for the Play Framework projects isn’t really straightforward. When you start a new project with Play, you typically have only one application.conf file with global settings. But then you need to configure the project for different…
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Pagination with Scala and Slick: How to Properly Build Select Queries
Implementing pagination inImplementing pagination in Scala projects using Slick is a very common task, but it’s not always clear how you can use Slick efficiently. It’s obvious that requesting all records from a schema in one go is a…
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Storing polymorphic objects with ReactiveMongo and Play
ReactiveMongo is an extremely convenient toolkit for working with MongoDB in Scala applications. But, at the same time, its documentation does not cover some of the typical scenarios, so sometimes it takes time to find the right solution.…
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