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ElixirConf.EU 2017 Recap
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Lou Xun
May 21, 2017
Programming
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150
ElixirConf.EU 2017 Recap
Recap of ElixirConf.EU 2017 at Elixir Shanghai meetup
Lou Xun
May 21, 2017
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Transcript
2017 ElixirConf.EU
None
José Valim Day 1 Keynote • Elixir 5yrs old, 1.0
-> 1.4 • _Seven Languages in Seven Weeks_ • "Elixir" before Elixir • defobject >,< • Elixir Goals -> Rethink meta-programming • Elixir ~= Data(types) + Modules + Processes • http: //theerlangelist.com //article/spawn_or_not • Time -> Runtime • Elixir 1.5
Tonći Galić CQRS/ES + Elixir • Event Sourcing • eventual
consistency • CQRS • Command • Query • Responsibility Segregation • +Elixir • gen_server/gen_statem/gen_stage • pattern matching • etc… • https: //10consulting.com/2017/01/04/building-a-cqrs-web- application-in-elixir-using-phoenix/
Andrea Amantini Nextjournal • https: //nextjournal.com/ • editor + interactive,
connected code cells • Dependencies of code cells -> Graph of processes • Cuneiform (cuneiform-lang.org) • GenStage (:digraph, BroadcastDispatcher) • Applications • Phoenix Channel • Runner App • Erlang Ports • Docker
None
Dániel Vámosi Visualization • https: //github.com/koudelka/visualixir • http: // www.erlang.pl/
• “Paparazzi”
Introducing ExLoglite LIGHTNING TALK
None
Tetiana Dushenkivska & Keith Salisbury Day 2 Keynote • _The
Age of Elixir_ • Community • Elixir Shanghai !!
Thomas Arts QuickCheck • Improved Elixir integration (eqc_ex) • PBT
x ex_loglite • Shrinking • Quviq customers: Volvo, Dropbox, Basho… • Erlang -> Elixir for B2B • Spec! (JSON Schema) • generator, validator • Real-time system challenge (timestamp…) • JSON Schema + QuickCheck for random data generation
defmodule ExLogLite.LogModelEQC do use ExUnit.Case use EQC.ExUnit alias ExLogLite.LogModel property
"`build` always return string of a specific length" do forall {s, n} <- {utf8(), choose(1, 1000)} do ensure byte_size(LogModel.build(s, n)) == n end end end
None
GraphQL Bruce Williams & Benjamin Wilson
Bruce Williams & Benjamin Wilson GraphQL • 3yrs of Elixir
@ CargoSence • RESTful APIs -> GraphQL • Absinthe • and friends… • Schema -> Objects -> Fields (type, another obj) • GraphQL Document • Query (like an object) • or Mutation, results are like queries • or Subscriptions
None
Bruce Williams & Benjamin Wilson Absinthe • Resolver -> Macro
(Map.get) • Execution / Data loading: • Batching • absinthe_ecto • lazy loading • combine sub-tree query • Projection (eager loading) • Extending Absinthe (hexdocs) • Phases |> Pipeline • Limit by complexity, etc… • middleware (per-field)
GRAPHQL BOOK COMING SOON
Petri Kero Scalable Mobile Game Backend • Distillery release •
Docker -> Kubernetes • libcluster • Distributed Locks • Global PG • Sloppy Quorum • Use AI client for load testing • 420k concurrents @ 8-node, 36 vCPU cluster • scaling up steps…
None
Chris McCord Closing Keynote • Why Phoenix 1.3 • Lonestar
ElixirConf 2017- KEYNOTE: Phoenix 1.3 • still rc >,< • Phoenix 1.4 • Metrics • Instrumenting
ADOPTING ELIXIR NEW BOOK2
See U Next Time @aquarhead