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May 30th, 2024, ISSUE 534

READING

Lagom is approaching end of life: possible migration paths

What should be the replacement? How to architect the migration path? What kind of options do we have?
Adam Warski (@adamwarski)
WebSockets in Scala, Part 2: Integrating Redis and PostgreSQL

In this iteration, we’ll be integrating Redis to keep track of the users and rooms and we’ll also be persisting messages in Postgres so that new users can have access to previous conversations. Finally, We’ll get rid of chatState and create a new protocol that interacts with Postgres and Redis.
Herbert Kateu (@kateuherbert)
Scala service combined with PostgreSQL, Flyway, Doobie, Ciris, IO(Cats Effects), Http4s…

A step-by-step guide.
Nicu Ciobanu
Akka 24.05: More Security. More Performance. More Efficiency.

https://www.lightbend.com/blog/akka-2405-more-security-more-performance-more-efficiency
Jonas Bonér (@jboner)
Forking and Interruption in ZIO

I recently encountered a bug in my application that caused it to hang during startup. The only change made was upgrading ZIO from version 2.0.x to 2.1.0. After some investigation, I discovered the issue was related to how I was forking fibers and a change in the behavior of Reloadable introduced in the new version. Let me explain what happened because I was very much surprised by the unexpected change.
Jakub Janeček (@jakubjanecek)
Scala 3 `usePipelining` build flag is a game changer

An impressive boost to compilation time!

EVENTS

ScalaMatsuri, June 7th-9th, Tokyo, Japan

The largest international Scala conference in Asia.
ScalaMatsuri (@ScalaMatsuri)

VIDEOS

Hands-on Besom: Infrastructure as a code with Scala

Functional languages offer potent, expressive tools for managing infrastructural complexity. In this talk, Łukasz will guide you through a deployment of a complete AI-based web service using Besom, Scala SDK for Pulumi. Some live coding will be performed, clouds and feelings for YAML might be harmed.
Łukasz Biały (@lukasz_bialy)
How Slow is Your Tram

Have you ever wondered if it's worth catching a tram instead of walking or riding a bike? How slow is your tram on average? In this beginner-friendly talk we'll try to find out using the power of Scala and functional programming techniques. You'll learn how to build an API client, handle JSON, stream and combine the data using FS2 and Cats Effect.
Michał Pawlik

RELEASES

Scala Highlighter using Tree Sitter

This WIP project is a space for exploring the usage of Tree Sitter for in-browser syntax highlighting, made possible by web-tree-sitter bindings, and the ability to compile Tree Sitter Scala parser to WASM.
Anton Sviridov (@velvetbaldmime)
caliban 2.7.0

Introducing schema transformations, scala 3 union type derivation, and performance improvements.
Caliban contributors
Dissonance

Dissonance implements Eugene Myers' diff algorithm in Scala as a pure function on immutable data structures. Using it is as simple as calling diff(left, right), where left and right are sequences of like-typed data to be compared; the result is an instance of Diff, a sequence of additions, deletions and no-change nodes representing each item in the left and right sequence.
Jon Pretty (@propensive)
sus4s 0.0.2

A Direct-Style Scala Wrapper Around the Structural Concurrency of Project Loom. New version introduces cancellation.
Riccardo Cardin (@riccardo_cardin)
sbt-postcss

With sbt-postcss, you can execute Postcss during Playframework's hot-reload and stage. It works with both sbt run and sbt stage.
Tanin Na Nakorn (@tanin)
sttp 4.0.0-M16

With support for Ox Sink/Source in WebSockets, scala3 for spray-json, and some fixes.
sttp contributors





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