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January 9th, 2019, ISSUE 256

READING

Where is the llama for FS2?

During this post we are going to take a look at the different system integration tools and libraries, verify if there is the Alpakka equivalent for FS2 (let’s call it for now Llama), and see what are the other options for FS2.
Michał Matłoka (@mmatloka)
Scala Best Practices - Foreword

A collection of useful hints.
Nicolas Rinaudo (@NicolasRinaudo)
Aecor - Purely functional event sourcing in Scala. Part 4b

1 month, 6 posts and we have finally covered bread and butter of eventsourcing with Aecor.
Vladimir Pavkin (@vlpavkin)
Postgresql from Spark, how to query?

A short example to help you handle such cases.
Leo Benkel (@LeoBenkel)
typebus: A modern guide for building distributed systems with scala and akka

Typebus is my mildly opinionated toolkit for building reactive microservices, abstracting away a publish/subscribe bus implementation.
Corey Auger (@coreyauger)
Error Handling in Akka Actor (with Future)

Handling errors can be tricky!
Linda Hong
An Introduction to ScalaTion Part 2  - HelloWorld of Data Science

In Part 2, we execute our first ScalaTion script — HelloWorldOfDS.scala .
Christian McDaniel
Writing a Spark Dataframe to an Elasticsearch Index

Elastic provides Apache Spark Support via elasticsearch-hadoop, which has native integration between Elasticsearch and Apache Spark.
Oliver Mascarenhas (@olly0808)
Session Windows in Akka Streams

In this post, I implemented a session based window as a custom operator in Akka Streams.
Efe Kahraman (@efeuska)
Rison: URI friendly strucured data representation

Rison is a data format which is similar to JSON but extremely URI friendly.
Naoki Takezoe (@takezoen)
Load Testing using Gatling.io 3.0 for Beginners

The reasons why I choose Gatling.IO 3.0 are: Load tests are written in Scala, it has multi-core support, and it has a free and an enterprise version.
Marko Stapfner
Setting up a Spark machine learning project with Scala, sbt and MLlib

A quick example how to do the setup.
Pedro Costa

PRESENTATIONS

Homegrown Scala Collections - Part 20 - Trampolines for CPS

In this video we will learn about trampolines - a tail call elimination technique used in CPS programs. This is part 1/2.
DevInsideYou (@DevInsideYou)

EVENTS

Scalar, Warsaw, Poland April 5-6, 2019

Join the next edition of the largest Scala conference in central Europe!
SoftwareMill (@softwaremill)
Lambda Days, Kraków, Poland, February 21-22, 2019

Use promo code SCALArlz10 for a 10% discount for our readers!
LambdaDays (@LambdaDays)

RELEASES

scala_typeclassopedia

Patterns from category theory and abstract algebra in Scala.
Piotr Paradziński

VARIA

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