Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Solid Ground
Search
Saša Jurić
May 20, 2017
Programming
15
1.2k
Solid Ground
Empex, 2017
Saša Jurić
May 20, 2017
Tweet
Share
More Decks by Saša Jurić
See All by Saša Jurić
Such Great Heights, Code BEAM Lite, Amsterdam 2018
sasajuric
0
180
Simplifying systems with Elixir - Belgrade
sasajuric
3
450
Simplifying systems with Elixir
sasajuric
2
570
Metagrokking Elixir
sasajuric
4
290
Solid Ground
sasajuric
3
880
Elixir - valentine edition
sasajuric
0
130
What's the fuss about Phoenix?
sasajuric
2
1.1k
Phoenix
sasajuric
1
230
Phoenix
sasajuric
0
120
Other Decks in Programming
See All in Programming
バッチ処理を「状態の記録」から「事実の記録」へ
panda728
PRO
0
170
iOSエンジニア向けの英語学習アプリを作る!
yukawashouhei
0
200
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
220
いま中途半端なSwift 6対応をするより、Default ActorやApproachable Concurrencyを有効にしてからでいいんじゃない?
yimajo
2
440
組込みだけじゃない!TinyGo で始める無料クラウド開発入門
otakakot
1
300
品質ワークショップをやってみた
nealle
0
520
Swift Concurrency - 状態監視の罠
objectiveaudio
2
540
uniqueパッケージの内部実装を支えるweak pointerの話
magavel
0
1k
私はどうやって技術力を上げたのか
yusukebe
44
19k
他言語経験者が Golangci-lint を最初のコーディングメンターにした話 / How Golangci-lint Became My First Coding Mentor: A Story from a Polyglot Programmer
uma31
0
200
はじめてのDSPy - 言語モデルを『プロンプト』ではなく『プログラミング』するための仕組み
masahiro_nishimi
2
590
kiroとCodexで最高のSpec駆動開発を!!数時間で web3ネイティブなミニゲームを作ってみたよ!
mashharuki
0
660
Featured
See All Featured
Git: the NoSQL Database
bkeepers
PRO
431
66k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3.1k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
10
870
Context Engineering - Making Every Token Count
addyosmani
7
260
RailsConf 2023
tenderlove
30
1.2k
Building an army of robots
kneath
306
46k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3.1k
Become a Pro
speakerdeck
PRO
29
5.6k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
The Power of CSS Pseudo Elements
geoffreycrofte
79
6k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
55
3k
Transcript
Solid ground @sasajuric aircloak.com
pattern matching OTP metaprogramming mix Distillery the pipe operator Cowboy
Plug Phoenix Ecto functional programming community GenStage Credo ExUnit Combine Poolboy Nerves
None
LFE Erlang OTP BEAM Elixir Phoenix GenStage Ecto Plug magic
source magic beneficiaries Cowboy Poolboy
long-running system many tasks soft real-time finite time program all-or-nothing
hard real-time
scheduler scheduler scheduler scheduler BEAM CPU CPU CPU CPU
frequent context switches
t1 t2 t3 t4 t5 10 s 1 ms 1
ms 1 ms 1 ms
t1 BEAM scheduler t2 t3 t4 t5 t1
t1 cooperative scheduler t2 t3 t4 t5
thread 1 thread n long running task long running task
blocked cooperative scheduler …
thread 1 thread n long running task long running task
BEAM scheduler … not blocked :-)
activities as runtime citizens
send(pid, :please_stop)
mref = Process.monitor(pid) send(pid, :please_stop) receive do {:DOWN, ^mref, :process,
^pid, _reason} -> :ok end
mref = Process.monitor(pid) send(pid, :please_stop) receive do {:DOWN, ^mref, :process,
^pid, _reason} -> :ok after :timer.seconds(5) -> Process.exit(pid, :kill) receive do {:DOWN, ^mref, :process, ^pid, _reason} -> :ok end end
task = Task.async(fn -> ... end) case Task.yield(task, :timer.seconds(5)) do
{:ok, result} -> do_something(result) nil -> Task.shutdown(task, :brutal_kill) end
shared-nothing concurrency
Process heap resources
process-owned “stuff” is released
supervision tree
system backend frontend chat history repo cache endpoint
system backend chat history repo
supervisor foundations frequent context switching activities as runtime citizens observable
process termination stoppable processes shared-nothing concurrency
syntax developer friendliness ecosystem
runtime guarantees syntax developer friendliness ecosystem
Scales of Justice image taken from clipartfox.com How Erlang does
scheduling http://jlouisramblings.blogspot.hr/2013/01/how-erlang-does-scheduling.html Erlang scheduler details https://hamidreza-s.github.io/erlang/scheduling/real-time/preemptive/migration/ 2016/02/09/erlang-scheduler-details.html The BEAM book https://github.com/happi/theBeamBook BEAM wisdoms http://beam-wisdoms.clau.se/en/latest/ Web based observer https://github.com/shinyscorpion/wobserver Recon http://ferd.github.io/recon/ Erlang performance lab http://www.erlang.pl/