Blog
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Example of Using Tapir with Akka-HTTP Interpreter, Quill and Macwire
Tapir – cutting-edge library for endpoint description, compatible with many well-known libraries like Akka-Http, Play,etc. Compared with defining endpoints via Akka-Http routing DSL, it’s much easier to define and describe endpoints anduse this description to create OpenAPI…
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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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Testing strategies for Apache Spark based projects
Let’s talk about tests. The Apache Spark official guide doesn’t suggest anLet’s talk about tests. The Apache Spark official guide doesn’t suggest an approach for testing, so we have to do the first steps ourselves. First, we should understand…
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Moving Lambda function from Serverless to Terraform
Introduction In this article, I will describe how to move an AWS Lambda function deployed as a Serverless application into a Terraform module. The article may be useful for: The implementation also includes a special case of…
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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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Generating Dynamic Virtual Modules with Webpack Virtual Modules Plugin
In projects built with webpack, it can be convenient to dynamically create some files in memory. In other words, a file doesn’t need to be written into the file system. Still, webpack must treat this virtual file…
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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 implement infinite scroll with GraphQL and React
Apollo comes with a simple method fetchMore() that you can use to implement offset pagination with infinite scroll in your React application. Offset pagination is very popular in modern applications due to its convenience: The data is presented as…
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Best Practices of Safe Pattern Matching in a Scala Application
When you start developing your first Scala projects, you may sometimes miss out to address one common problem with pattern matching, and that is error handling. Basically, you may pass a type to a method used for matching…
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