Concurrent Applications with F# Agents
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This document discusses F# agents and the actor model of concurrency. It begins with definitions of concurrent and parallel programming. F# agents implement Erlang-style message passing using the actor model, where independent actors receive and process messages asynchronously. However, F# agents differ from Erlang in that they are contained within a single process and lack features like supervisors and durable mailboxes. The presentation includes demos of F# agents and additional resources for learning more about concurrency in F#.
![What are F#
agents?
F#’s implementation of Erlang-style
message passing
(also in Clojure, Scala, Elixir (and many others))
[But there are differences.]](https://image.slidesharecdn.com/codemash-20-20concurrent-20applications-20with-20f-140116093331-phpapp01/85/Concurrent-Applications-with-F-Agents-2-320.jpg)
![What are F#
agents?
F#’s implementation of Erlang-style
message passing
(also in Clojure, Scala, Elixir (and many others))
[But there are differences.]](https://image.slidesharecdn.com/codemash-20-20concurrent-20applications-20with-20f-140116093331-phpapp01/85/Concurrent-Applications-with-F-Agents-13-320.jpg)
Concurrent Applications with F# Agents
- 1. Concurrent Applications with F# Agents presented by Rachel Reese Twitter #fsharp #codemash @rachelreese @fireflylogic
- 2. What are F# agents? F#’s implementation of Erlang-style message passing (also in Clojure, Scala, Elixir (and many others)) [But there are differences.]
- 3. What is Erlangstyle message passing? Erlang’s message passing is based on the actor model devised by Carl Hewitt et al. in 1973.
- 4. dynamic creation of actors What is the actor model? inclusion of actor addresses in messages interaction only through direct asynchronous message passing no restriction on message arrival order
- 5. An actor is an independent computational entity which contains a queue, and receives and processes messages. What is an actor? Everything is an Actor
- 6. Determine what to do with the next incoming message What can an actor do? Create more actors Send messages to another actor
- 7. “One actor is no actor. They come in systems.” - Carl Hewitt
- 8. What does a system of actors look like? from: http://www.developerfusion.com/article/140677/writing-concurrent-applications-using-fagents/
- 9. What does a system of actors look like? Genes maestros de regulación, from: http://cienciasdejoseleg.blogspot.com/2011/10/genesmaestros-de-regulacion.html
- 11. What does a system of actors look like? Tokyo Subway Map, from: http://www.speedymole.com/Tubes/Tokyo/tokyo-subway-map.html
- 12. dynamic creation of actors What is the actor model? inclusion of actor addresses in messages interaction only through direct asynchronous message passing no restriction on message arrival order
- 13. What are F# agents? F#’s implementation of Erlang-style message passing (also in Clojure, Scala, Elixir (and many others)) [But there are differences.]
- 14. Asynchronous Non-blocking, specifically in reference to I/O operations (not necessarily parallel, can be sequential.) Concurrent Multiple operations happening at the same time (not necessarily in parallel). Definitions Parallel Multiple operations processed simultaneously.
- 15. Demos: Intro, Replies, Scanning, Emailer
- 16. What are some major differences between F# agents & Erlang’s message passing? F# agents are contained inprocess; they are not distributed. Lack of support for supervisors. No built-in durable mailboxes.
- 18. Actors and Agents F# in general, and Async, Concurrency, & Parallelism Fsharp.Actor TPL Dataflow ActorFx Additional Resources Try F# F# Koans Orleans Hewitt, Meijer, and Szyperski C9 Async and Parallel Design Patterns in F# Agents An Introduction to Agents Image pipeline using agents Building an actor in F# w/ higher throughput than Akka or Erlang F# MailboxProcessor Building clean and cohesive concurrent systems with F# agents SkillsMatter FsSnip F# Chat on IRC or JabbR The Hitchhiker’s Guide to Concurrency F# Asynchronous Programming Model
- 19. Thanks! Rachel Reese Twitter: @rachelreese Email: [email protected] Firefly Logic, Inc. 1000 Main Street #201 Nashville, TN 37206 http://fireflylogic.com