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April 30th, 2020, ISSUE 324


A simple trick to improve type safety of your Scala code

Combine Refined and Scala newtypes to achieve a powerful result!
Marcin Kubala (@marcin_kubala)
The Power of Akka Streams

In this article, a lot of Akka Streams capabilities are explained with a few examples, but it’s is just a tip of the iceberg.
Aleksandar Skrbic (@skrbic_a)
Akka Persistence JDBC 4.0.0 release candidate

This release changes the organization id to “com.lightbend.akka” (This is the main reason to make it a major release).
Scala Book: Free PDF, Mobi, and ePub versions

This summer I’ll start working on updating the book to cover Scala 3. I’ll make announcements about updates here on this website and also on my Twitter account.
Alvin Alexander (@alvinalexander)
Testing Embedded H2 DB with Scala and Scalatest

If you are a Scala developer/lover and want to create a Scala application that interacts with an embedded database for testing or local RDBMS storage purposes then you have opened a correct web link.
Sukumaar Mane
Functional Tracing using Scala

Learn how to add tracing to your F[_] and make it work with Jaeger.
Ayush Mittal
10000 nodes and beyond with Akka Cluster and Rapid

Rapid’s multi-node cut detector provides a much stronger and deterministic guarantee than using arbitrary timeouts, leading to reduced resolution times.
Manuel Bernhardt (@elmanu)


Scalar Online, May 15th (Extended CFP)

Send your proposal! Call for papers ends 26th of April
SoftwareMill (@scalarconf)
Scala Swarm, June 18th-23rd, Porto, Portugal

Ticket sale is now open, come quick and grab your ticket to this unique event!
ScalaSwarm (@ScalaSwarmConf)
Scalar Workshops, October 8th-10th, Warsaw, Poland

Get ready for the workshop-driven FP event in Poland!
SoftwareMill (@scalarconf)
Functional Scala, December 3th-4th, London

Learn the critical topics you need to excel as a Scala developer, and celebrate the Scala programming language and community.
Ziverge (@zivergetech)


caliban 0.7.6

Caliban is a purely functional library for creating GraphQL backends in Scala. Added support for arguments not wrapped in cases classes, variables in WebSockets, option to disable introspection, schema directives validation and more!
caliban contrubtors
scalajs-benchmark 0.5.0

Add CSV as a new built-in format for benchmark results, Open up API to allow users to define their own formats for benchmark results, and more!
David Barri (@japgolly)
Akka HTTP 10.2.0-M1

This release is the first milestone leading up to version 10.2.0 of Akka HTTP.
Akka team (@akkateam)


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