Scala Love in the City Scala Love in the City

distributed systems

Saturday, February 13, 2021

- PST
Greyhound - Powerful Pure Functional Kafka library
Join Stream

Wix has finally released to open-source its Kafka client SDK wrapper called Greyhound. Completely re-written using the Scala functional library ZIO. Greyhound harnesses ZIO’s sophisticated async and concurrency features together with its easy composability to provide a superior experience to Kafka’s own client SDKs It offers rich functionality including: - Trivial setup of message processing parallelisation, - Various fault tolerant retry policies (for consumers AND producers), - Easy plug-ability of metrics publishing and context propagation and much more. This talk will also show how Greyhound is used by Wix developers in more than 1500 event-driven microservices.

- PST
One year with Akka 2.6
Join Stream
Sean Glover
Sean Glover
Lightbend

Akka’s new type-safe APIs graduated from experimental to stable with the release of Akka 2.6. Akka 2.6 was released in November 2019 and represented a major step forward for the project, despite being a minor version tick from 2.5 to 2.6. The new API became the default for documentation, reference projects, and is the base upon which many exciting new features and projects were added to the Akka ecosystem in the following year.

There are too many topics in the Akka 2.6 series to cover in a single talk, but I’ll highlight several major developments, such as easier to use APIs for Akka Persistence and Cluster Sharding, a new remoting layer to optimize peer to peer connections in Akka cluster, a new project called Projections to manage readside views in event sourced systems, and the ability to define external shard allocation strategies with Akka Cluster to optimize data locality (i.e. with Alpakka Kafka consumer instances). We’ll also highlight recently open sourced components that were previously only available to Lightbend customers, such as the Split Brain Resolver for Akka Cluster.