ZIO Hackathon 2020 (Berlin Edition)

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00-510 Berlin


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The fifth official ZIO Hackathon is designed to bring together many core contributors to ZIO from all around the world, as well as current ZIO users, future ZIO users and contributors, and contributors to other libraries for async and concurrent programming in the broader functional Scala ecosystem.

Over the course of two days, we will share and learn about ZIO and related projects; chat about functional programming, functional Scala, and much more; work on fun projects; and get to know one another.

Note: No prior background knowledge of ZIO is assumed. If you're curious, please join us!

Sunday/Monday - Core Contributor Hackathon

If you're a core ZIO contributor and want to arrive early for hacking on critical issues in ecosystem projects, then feel free to come as early as Sunday/Monday. Reach out to us if you'd like hotel assistance, and expect at least one free meal and drinks on us!

Monday Night - Meet & Greet

Attendees will gather on the evening of Monday (June 29th) in Berlin, Germany. Meet other ZIO contributors, ZIO users, and developers from the broader functional Scala ecosystem, and learn the basics of functional effect systems like ZIO.

Tuesday - Hackathon & Breakouts

Attendees can join breakout sessions to learn about specific aspects of ZIO (ZIO core, fibers, STM, execution traces, fiber dumps, ZIO test, ZIO config, etc.), and team leaders will help different groups work on core issues in ZIO, the ZIO ecosystem, and other related libraries in the functional Scala ecosystem.

There will be ample time for networking activities during meals and after the days activities conclude.

Wednesday - Hackathon

Core contributors, and any attendees who are still around, will meet for a second half-day of pure open source development. No sessions will be scheduled on Wednesday.

There will be ample time for networking activities. Note the hackathon will conclude promptly at lunch time, so everyone has a chance to head on over and see Oderskey's opening keynote for Scala Days Berlin.

About ZIO

ZIO is a zero-dependency Scala library for asynchronous and concurrent programming.

Powered by highly-scalable, non-blocking fibers that never waste or leak resources, ZIO lets you build scalable, resilient, and reactive applications that meet the needs of your business.

  • High-performance. Build scalable applications with 100x the performance of Scala's Future.
  • Type-safe. Use the full power of the Scala compiler to catch bugs at compile time.
  • Concurrent. Easily build concurrent apps without deadlocks, race conditions, or complexity.
  • Asynchronous. Write sequential code that looks the same whether it's asynchronous or synchronous.
  • Resource-safe. Build apps that never leak resources (including threads!), even when they fail.
  • Testable. Inject test services into your app for fast, deterministic, and type-safe testing.
  • Resilient. Build apps that never lose errors, and which respond to failure locally and flexibly.
  • Functional. Rapidly compose solutions to complex problems from simple building blocks.

To learn more about ZIO, see

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00-510 Berlin


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