Erlang is a functional programming language built for reliability and concurrency. It is used to build scalable and fault-tolerant systems through features like its supervision tree, behaviors, and OTP framework. The document recommends learning more about Erlang through various books and online resources, and suggests trying out the build tools rebar and ChicagoBoss or contributing to open source projects like Riak to get hands-on experience with the language.

1. Erlang
DIVE RIGHT IN
A short presentation
with bullet points
but no lolcats
in a default keynote theme
by Vaughan Allan
http://github.com/vorn

3. Erlang in 2 minutes
• Functional
• Built for reliability (nine nines)
• Some nice adjectives include:
• concurrent, distributed, “soft real-time”
• fault tolerant
• scalable (cloud-scale, web-scale)
• green (sort of)

4. Erlang in 2 minutes
• Gotchas include:
• It looks a lot like Prolog
• Immutability
• No “loops” (use tail recursion, or map funs)
• Strings are weird-ish

5. OTP in 5 minutes
• It’s an application framework
• Release handling (sort of), hot code-swapping
• Supervision Tree
• Patterns (behaviours)

6. Supervision Tree

7. Behaviours
• gen_sup - supervisor, often linked to one of:
• gen_server - generic module
• gen_fsm - finite state machine
• gen_event - event-driven pub/sub

8. Supervision Tree

9. Read Something
“Don't
drink too
much
• http://learnyousomeerlang.com Kool-Aid”
• “Programming Erlang” (pragprog.com)
• “Erlang Programming” (O’Reilly) - good for learning OTP
• “Erlang and OTP in Action” (Manning)
• “7 Languages in 7 weeks” (pragprog.com)

10. Build Something
• rebar - a build tool (on steroids)
• ChicagoBoss - (Rails-like MVC Framework)
• for immediate gratification
• webmachine by Basho (a “REST Toolkit”)
• Emacs! (?)

11. Hack Something
• ChicagoBoss - http://github.com/evanmiller
• http://github.com/languages/Erlang
• Riak, RabbitMQ , eJabberd, CouchDB

12. Double-Click to Edit
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