(I am not listening to this because I cannot change the playback speed)

Jonas Bonér, CTO of LightBend and creator Akka, discusses using Akka when developing distributed systems. He talks about the Actor Model, and how every Microservice needs to be viewed as a system to be successful. 

Why listen to this podcast:

 - Akka is JVM-based framework design for developing distributed systems leveraging the Actor Model - an approach for writing concurrent systems that treat actors as universal primitives and the most successful model with abstraction has been streaming
 - Circuit breakers in Akka are a backup and retry policy; they protect you by capturing failure data and allow you to roll back 
 - Every Microservice needs to be viewed as a system, it needs to have multiple parts that run on different machines in order to function and be fully resilient - thus is a Microsystem
 - Two different trends have emerged when it comes to hardware and environments: one is the trend toward Multi-core, the is a movement toward virtualized environments and the cloud
 - Saga pattern of managing long running transactions in a distributed system fits very well with messaging style architectures

Notes and links can be found on: http://bit.ly/2kwB2eB

Akka
The Actor Model
When Akka and the Actor Model is the perfect choice
Circuit breakers patterns in distributed systems
Two trends toward Multi-core
Reactive Manifesto
Event Driven vs. Message Driven
Reactive Programming and Streams
Microliths to Microsystems
What do you have to get right before you start trying to deploy a distributed systems?
Working with ML / AI at Lightbend to understand tracing through distributed system
Saga Pattern

More on this:
Quick scan our curated show notes on InfoQ http://bit.ly/2kwB2eB

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Show Notes

Jonas Bonér on the Actor Model, Akka, Reactive Programming, Microservices and Distributed Systems

Duncan Macgregor speaks with Wes Reisz about the work being done on the experimental Graal Compiler. He talks about the use cases and where the new JIT compiler excels really well (compared to C2). In addition, Duncan talks about the relationship of Graal to Truffle. The two then discuss a language Duncan works on at OracleLabs (TruffleRuby) that is being implemented on the stack. Finally, the podcast wraps with a discussion of Project Loom and its relationship to TruffleRuby and Graal.

Why listen to this podcast:

- Graal is a replacement for the JVM’s C2 JIT compiler. It was tracked with JEP 295 (Ahead-of-Time Compilation) and included in Java 9. As of Java 10, Graal is experimental for the Linux x64 platform.
- Graal is written in Java and excels at implementing code that takes a functional approach to solving problems (such as Scala). It can also offer improvements / optimizations for other languages (including other non-traditional JVM languages such as C and Ruby).
- Truffle is a language implementation framework used my Graal. The idea is rather than having to write a compiler for your language, you can write an interpreter. This gives you the ability to write specializations at a higher level of abstraction that yields performance and better understanding.
- Truffle’s architecture and design allows things like allowing unrelated languages to do interop, garbage collection, and types.
- TruffleRuby and JRuby started off with a lot of shared code. They’ve branched and JRuby today focuses on integration with other Java classes. It compiles to bytecode and then relies on the C2 JIT to run on the JVM. TruffleRuby doesn’t try to compile to Java classes and only uses the Truffle framework to compile the things it needs. TruffleRuby is able to use most of native Ruby.
- Project Loom is a project that aims to add one shot delimited continuations to the JVM. It leverages fibers (a much lighter concurrency primitive than threads) and can literally run millions of them.

Show notes

Oracle Labs’ Duncan Macgregor on Graal, TruffleRuby, & Project Loom

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Oracle Labs’ Duncan Macgregor on Graal, TruffleRuby, & Project Loom

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