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
複雑なドメインに挑む.pdf
yukisakai1225
5
1.2k
開発チーム・開発組織の設計改善スキルの向上
masuda220
PRO
20
11k
旅行プランAIエージェント開発の裏側
ippo012
2
910
さようなら Date。 ようこそTemporal! 3年間先行利用して得られた知見の共有
8beeeaaat
3
1.4k
もうちょっといいRubyプロファイラを作りたい (2025)
osyoyu
1
440
基礎から学ぶ大画面対応(Learning Large-Screen Support from the Ground Up)
tomoya0x00
0
490
1から理解するWeb Push
dora1998
7
1.9k
Android端末で実現するオンデバイスLLM 2025
masayukisuda
1
150
RDoc meets YARD
okuramasafumi
4
170
Tool Catalog Agent for Bedrock AgentCore Gateway
licux
6
2.5k
私の後悔をAWS DMSで解決した話
hiramax
4
210
アプリの "かわいい" を支えるアニメーションツールRiveについて
uetyo
0
270
Featured
See All Featured
Optimising Largest Contentful Paint
csswizardry
37
3.4k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
The Pragmatic Product Professional
lauravandoore
36
6.9k
Producing Creativity
orderedlist
PRO
347
40k
Navigating Team Friction
lara
189
15k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.4k
Fireside Chat
paigeccino
39
3.6k
Measuring & Analyzing Core Web Vitals
bluesmoon
9
580
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
Speed Design
sergeychernyshev
32
1.1k
What's in a price? How to price your products and services
michaelherold
246
12k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
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/