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
Kiroで始めるAI-DLC
kaonash
2
580
「手軽で便利」に潜む罠。 Popover API を WCAG 2.2の視点で安全に使うには
taitotnk
0
850
Kiroの仕様駆動開発から見えてきたAIコーディングとの正しい付き合い方
clshinji
1
210
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
為你自己學 Python - 冷知識篇
eddie
1
350
機能追加とリーダー業務の類似性
rinchoku
2
1.3k
奥深くて厄介な「改行」と仲良くなる20分
oguemon
1
520
FindyにおけるTakumi活用と脆弱性管理のこれから
rvirus0817
0
500
複雑なドメインに挑む.pdf
yukisakai1225
5
1.1k
もうちょっといいRubyプロファイラを作りたい (2025)
osyoyu
1
430
AI Coding Agentのセキュリティリスク:PRの自己承認とメルカリの対策
s3h
0
200
「待たせ上手」なスケルトンスクリーン、 そのUXの裏側
teamlab
PRO
0
510
Featured
See All Featured
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
Bash Introduction
62gerente
615
210k
Making the Leap to Tech Lead
cromwellryan
135
9.5k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Building Adaptive Systems
keathley
43
2.7k
Embracing the Ebb and Flow
colly
87
4.8k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
131
19k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
840
Designing Experiences People Love
moore
142
24k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
Thoughts on Productivity
jonyablonski
70
4.8k
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/