Backend>Blogs/Talks

Careful what data you send or how to tank your performance with Task.async

PragTob

PragTob

Careful what data you send or how to tank your performance with Task.async

I ran into an interesting problem recently where simple concurrency on the BEAM via Task.async made my application a lot slower and a lot more memory hungry. This blog post illustrates the issue with a short example, where processing 3 non-trivial actions on a list in parallel is slower than doing it sequentially, and then explains why this happens and what can or can’t be done about it.

View thread on forum
/elixir/erlang#blog-post
1 519 0

Where Next?

View thread on forum
elixir
erlang
blog-post
Home Backend>Blogs/Talks
/elixir/erlang#blog-post
1 519 0
Last post

Popular Backend topics Top

AstonJ
Backend>Blogs/Talks

The Erlang Rationale, by Robert Virding (PDF)
This article was written by @rvirding …over a decade ago! Posting here in case anyone else finds it of interest and adding it to our Erla...
drive.google.com
/erlang#sticky#info
7 1717 2
New
First poster: bot
Backend>Blogs/Talks

Rust vs Go
Rust vs Go — Bitfield Consulting. Which is better, Rust or Go? Which language should you choose for your next project, and why? How do t...
bitfieldconsulting.com
/go/rust
0 1590 0
New
First poster: bot
Backend>Blogs/Talks

It’s not legacy code — it’s PHP
It’s not legacy code — it’s PHP. Vimeo has been using PHP in production for over 15 years. Find out how we keep a million lines of PHP i...
medium.com
/php#code
0 1460 0
New
AstonJ
Backend>Blogs/Talks

Industry vs Academia - Francesco Cesarini & Simon Thompson at Lambda Days 2021
Just listening to this now… Totally agree with @FrancescoC’s and @thompson_si’s comment “learn to learn” :sunglasses: In our talk we’...
youtube.com
/elixir/erlang#talk
7 1496 1
New
First poster: bot
Backend>Blogs/Talks

Why we need multi-line short closures in PHP
PHP 8.1 is already taking shape quite well, yet there’s one feature I’d love to see added, that’s still being discussed: multi-line short...
stitcher.io
/php
0 1444 0
New
elbrujohalcon
Backend>Blogs/Talks

Spot the Difference
Erlang is famous for its introspecting powers. You can get a lot of information about the processes running in your nodes without any ext...
medium.com
/elixir/erlang#blog-post/gleam#efene
35 1952 6
New
First poster: bot
Backend>Blogs/Talks

A Clojure processor that's almost a drop-in replacement for php-fpm behind Nginx
Too long have we hustled to deploy Clojure websites. Too long have we spun up one server instance per site. Too long have reminisced abou...
github.com
/clojure/php#nginx
0 1472 0
New
axelson
Backend>Blogs/Talks

Hot Reloading: A Faster Way to Develop Modern Apps
I describe how we use Hot Reloading with Webpack to develop faster and show how to integrate Webpack 5, webpack-dev-server, and Phoenix f...
felt.com
/elixir#blog-post
9 1472 3
New
brainlid
Backend>Blogs/Talks

ThinkingElixir 081 - Elixir in a Burrito with Quinn and Digit
In episode 81 of Thinking Elixir, we talk with Digit and Quinn Wilton about the Burrito project. It wraps up Elixir to a single binary, e...
podcast.thinkingelixir.com
/elixir/security#podcasts/zig#dev-news-source#cross-platform
4 1486 0
New
Johannes-Werbrouck
Backend>Blogs/Talks

User Levels, Enums and Policies, oh My!
In this blog post over on Fly.io I take a look at PHP 8.1’s new Enum class, and show you how it can be used to set up a level structure f...
fly.io
/php/laravel#blog-post
3 1215 1
New

Other popular topics Top

AstonJ
General Dev>Dev Chat

What are you listening to?
A thread that every forum needs! Simply post a link to a track on YouTube (or SoundCloud or Vimeo amongst others!) on a separate line an...
#community#music
202 5126 102
New
dasdom
General Dev>Dev Chat

Standing Desks
No chair. I have a standing desk. This post was split into a dedicated thread from our thread about chairs :slight_smile:
#workspace#opinions
177 9554 77
New
AstonJ
General Dev>Code Editors

SpaceVim vs SpaceMacs
SpaceVim seems to be gaining in features and popularity and I just wondered how it compares with SpaceMacs in 2020 - anyone have any thou...
/vim#spacevim#spacemacs/emacs#code-editors
30 4336 14
New
AstonJ
Backend>Questions

Erlang's not installing on macOS Big Sur "You are natively building Erlang/OTP for a later version of MacOSX than current version"
Just done a fresh install of macOS Big Sur and on installing Erlang I am getting: asdf install erlang 23.1.2 Configure failed. checking ...
#macos/erlang#big-sur#asdf
10 6212 8
New
Exadra37
Linux>Chat

RancherOS is in end of life
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
#linux#rancheros
10 6358 6
New
PragmaticBookshelf
Backend>Learning Resources

Programming WebRTC
Use WebRTC to build web applications that stream media and data in real time directly from one user to another, all in the browser. ...
pragprog.com
#pragprog#published-book/js#webrtc/book-programming-webrtc
27 6969 6
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Rebecca Skinner (Author) Interview and AMA!
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
#author-spotlight/haskell/book-effective-haskell
106 11719 28
New
PragmaticBookshelf
Backend>Learning Resources

Agile Web Development with Rails 8
Get the comprehensive, insider information you need for Rails 8 with the new edition of this award-winning classic. Sam Ruby @rubys ...
pragprog.com
#pragprog#web-development/ruby/rails#published-book/book-agile-web-development-with-rails-8
12 7404 7
New
RobertRichards
Game Dev>Chat

Hair Salon Games for Girls Fun
Hair Salon Games for Girls Fun Girls Hair Saloon game is mainly developed for kids. This game allows users to select virtual avatars to ...
#ios#android#unity#fun
2 3556 1
New
PragmaticBookshelf
Backend>Learning Resources

Simplicity
Fight complexity and reclaim the original spirit of agility by learning to simplify how you develop software. The result: a more humane a...
pragprog.com
#pragprog#published-book/book-simplicity
10 6553 8
New
Back to top

Sponsor Spotlight

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

Latest in Elixir

Elixir Portal ❯

Latest in Erlang

Erlang Portal ❯

Backend>Blogs/Talks

Backend Blogs/Talks ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap