ELIXIR Tolerncia a Falhas para Adultos @akitaonrails ELIXIR - PowerPoint PPT Presentation

ELIXIR Tolerância a Falhas para Adultos @akitaonrails

ELIXIR Tolerância a Falhas para Adultos @akitaonrails

@akitaonrails

FIM DA LEI DE MOORE

THREADS! (NÃO USE)

THREADS! (NÃO USE)

EVENTOS! (NÃO USE)

EVENTOS! (NÃO USE)

BAIXA LATÊNCIA

CO-ROTINAS (SUBROTINAS, FIBRAS)

CASOS REAIS

“Since cut-over of the fj rst nodes in British Telecom's network in January 2002 only one minor fault has occurred, resulting in 99.9999999% availability .” “The network performance has been so reliable that there is almost a risk that our fj eld engineers do not learn maintenance skills.” Bernt Nilsson - director of Ericsson’s Next Generation Systems program

BÁSICO …

PEER-TO-PEER NETWORKING

[a, b, c] = [a, 2, 3] {:ok, message} = {:ok, “world"} {:ok, [hello: message]} = {:ok, [hello: “world”]} [hello: message, world: message2] #=> [{:hello, message}, {:world, message2}]

[a, b, c] = [a, 2, 3] {:ok, message} = {:ok, “world"} {:ok, [hello: message]} = {:ok, [hello: “world”]} [hello: message, world: message2] #=> [{:hello, message}, {:world, message2}]

[a, b, c] = [a, 2, 3] {:ok, message} = {:ok, “world"} {:ok, [hello: message]} = {:ok, [hello: “world”]} [hello: message, world: message2] #=> [{:hello, message}, {:world, message2}]

[a, b, c] = [a, 2, 3] {:ok, message} = {:ok, “world"} {:ok, [hello: message]} = {:ok, [hello: “world”]} [hello: message, world: message2] #=> [{:hello, message}, {:world, message2}]

PATTERN MATCHING

CALL BY PATTERN

Spawn, Send, Receive

"PID" (Process ID)

PROCESSOS (GREEN THREADS)

List/Kill

ASYNCHRONOUS EXCEPTIONS

ASYNCHRONOUS EXCEPTIONS

Link, Flag

ACTORS!

GenServer

[h, t] = [1, 2, 3] #=> h = 1, t = [2,3] Process.list |> Enum.reverse #=> Enum.reverse(Process.list())

[h, t] = [1, 2, 3] #=> h = 1, t = [2,3] Process.list |> Enum.reverse #=> Enum.reverse(Process.list())

SUPERVISOR TREE (supervisor - supervisees/workers)

OTP (Open Telecom Platform)

MICRO “YOCTO” SERVICES (Micro > Nano > Pico > Femto > Atto > Zepto > Yocto)

MICRO “YOCTO” SERVICES (Micro > Nano > Pico > Femto > Atto > Zepto > Yocto)

MICRO “YOCTO” SERVICES (Micro > Nano > Pico > Femto > Atto > Zepto > Yocto)

• Keywords, Maps, Comprehensions

• Keywords, Maps, Comprehensions • Documentação testável/executável

• Keywords, Maps, Comprehensions • Documentação testável/executável • TypeSpecs, Behaviors

• Keywords, Maps, Comprehensions • Documentação testável/executável • TypeSpecs, Behaviors • Agents, Tasks, GenEvent

• Keywords, Maps, Comprehensions • Documentação testável/executável • TypeSpecs, Behaviors • Agents, Tasks, GenEvent • Macros, Sigils

• Keywords, Maps, Comprehensions • Documentação testável/executável • TypeSpecs, Behaviors • Agents, Tasks, GenEvent • Macros, Sigils • Armazenamento: ETS, DETS, Mnesia

shared mutable global state Javascript - Blocking Event Loop Low Level Rust - Async in progress No coroutines goroutines sem ID Suture Go shared mutable state (OTP Clone) static signatures Akka shared mutable state Scala (OTP Clone) static signatures Almost Erlang-like Process Clojure Pulsar / Quasar JVM limitations

“quase” …

Erlang: PRONTO! (30 anos)

APRENDENDO