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Elixir a Language for the Future
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João Moura
June 23, 2017
Programming
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Elixir a Language for the Future
João Moura
June 23, 2017
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Transcript
elixir elixir elixir A language for the future
1,000,000,000
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largest city in the Americas the most populous city of
the southern hemisphere
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Programming Languages
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Elixir
?
João Moura @joaomdmoura
初⼼
beginner's mind
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beginner's mind
EXPERTS
EXPERTS
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The rules for software are CHANGING
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The future is DYNAMIC 1.
1,000,000,000 ~
2 177 mm2
The future is Concurrent 2.
Threads, Processes and cores
multi-thread
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Process
SHARED Memory
SHARED Memory
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Cores
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RaceConditions
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Highly Concurrent
Easily distributable
Really fast (real time)
Almost no downtime
Self-healing and fault tolerant
Erlang
Erlang VM
Actor Model
FREAKING 30 YEARS
downtime A YEAR 31ms
ruby +
ruby + Erlang +
ruby + Erlang +Steroids
elixir elixir elixir
Functional “doing the same thing over and over again and
expecting different results” Albert Einstein
- Clear code - Transparency - Parallelization - Modularity -
Easier debugging
EXAMPLE I
a = 0 def increment a += 1 end RUBY
def increment(a) return a + 1 end RUBY
EXAMPLE II
indexes = [1, 2, 3] indexes << 4 indexes #
[1,2,3,4] RUBY
indexes = [1, 2, 3] new_indexes = indexes ++ [4]
Elixir
EXAMPLE III
result = func1(a, b) + func2(a, c)
func1(a, b) func2(a, c)
func1(a, b) func2(a, c) } parallelization
ELIXIR
PIPE OPERATOR
Ruby
Ruby
Ruby
Ruby
Elixir
Match Operator
Ruby
Ruby
Elixir
Elixir
Pattern Matching
Elixir
Elixir
Elixir
Elixir
Modules
Ruby
Ruby
Ruby
Elixir
Putting together
Elixir
Elixir
Elixir
Elixir
Elixir
Elixir
Elixir
Elixir
Elixir
Elixir "
Elixir
Elixir
Elixir
None
# OF PROCESSES
# OF PROCESSES # CALL FOR SPAWN AND BLOCKER
# OF PROCESSES # CALL FOR SPAWN AND BLOCKER #
SPAWN NEW PROCESSES
# OF PROCESSES # CALL FOR SPAWN AND BLOCKER #
SPAWN NEW PROCESSES # FUNCTION THE PROCESS EXECUTE
# OF PROCESSES # CALL FOR SPAWN AND BLOCKER #
SPAWN NEW PROCESSES # FUNCTION THE PROCESS EXECUTE # BLOCKER THAT GETS THE MESSAGE
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1.500.000
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WEB!
Rake + bundler
mix
mix test
mix phoenix.new
mix deps.get
gemfile.rb
mix.ex
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Rails: req/s: 1,140.53 Stdev: 18.96ms Max latency: 159.43ms
Rails: req/s: 1,140.53 Stdev: 18.96ms Max latency: 159.43ms Pheonix: req/s:
12,120.00 Stdev: 3.35ms Max latency:43.30ms
Rails: req/s: 1 140 530 Stdev: 18.96ms Max latency: 159.43ms
Pheonix: req/s: 12 120 000 Stdev: 3.35ms Max latency:43.30ms
10.63x more throughput
This is good shit. “ “ Co-creator of Erlang Joe
Armstrong
The future is DYNAMIC
The future is Concurrent
Erlang VM
elixir elixir elixir
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joaomdmoura.com #ElixirWithaRubyist @joaomdmoura