While reading Fred Hébert’s PropEr testing, on property-based testing in Erlang, I set out write PropEr tests in Elixir, and run them with a Mix task.

— https://jeffkreeftmeijer.com/mix-proper

Last article in a series about caching repetitive queries with GenServer: http://iacobson.net/testing-genserver-basic-cache/

A new article is based on my experience on running several production applications: https://medium.com/nebo-15/runtime-configuration-migrations-and-deployment-for-elixir-applications-6295b892fa6a

http://gladecki.pl/2017/08/19/stateful-genservers-in-elixir/

hi, i made this funny little app to learn how GenServers work in Elixir, so i explained it later on in a blog post. It is a pretty cool base to go any further without digging into Supervisors and such. I’d love to see it on the Elixir Weekly! (which i love btw - great job!)

Thanks

• For reporting the need to install intellij-erlang to get icons to resolve
  • Dmitriy Molodtsov (@sintro)
• For reporting formatter didn’t indent first line of a new do … end block
  • @nulian
• For reporting still unhelpful errors from beam decoder
  • @bdarla

Changelog

v6.1.1

Bug Fixes

• When #754 made intellij-erlang a soft-dependency, it broke the debugger’s icons that referenced ErlangIcons, but it turns out all the icon constants were aliases to AllIcons.Debugger constants, so by using the AllIcons.Debugger icons directly, the dependency on ErlangIcons can be removed without the need to copy the image files into intellij-elixir.
• When do … end template is inserted, it did not have a previous child whose attributes to use, so it used the default, which left the cursor unindented. To get the cursor indented by default, When the ElementType is DO, apply the stabChildrenIndent rules: indent normal and determine whether to indent relative to direct parent using code style setting.
• Include VirtualFile path in Beam read errors

Installation

Installation Instructions

The usage of contexts is a major new concept introduced in Phoenix 1.3 which helps us to write more maintainable and reusable code …

https://samueltthomas.com/understanding-the-concept-of-a-context-in-phoenix

A fast, flexible and powerful caching library for Elixir

Continue reading here: http://cabol.github.io/posts/2017/08/14/introducing-nebulex/

My first set of screencasts on GenStage. Episodes 1-5 focus only on the basics and how things work.

https://stuffbyexample.com/genstage

Reflection on a year of being part of Elixir’s excellent community

https://labs.uswitch.com/a-year-of-elixir/

ElixirScript 0.30.0 has been released and contains lots of exciting changes.

https://elixirscript.github.io/post/elixirscript-0.30.0-released/

How to use sentry.io with Elixir inside a Docker container?

https://blog.lelonek.me/how-to-use-sentry-io-with-elixir-in-docker-8374e695f706

In my blog post, I consider a solution based on a timeout which can be defined for a GenServer process.

https://nesteryuk.info/2017/08/13/recurring-tasks-in-elixir-solution-2.html

A simple, in-memory queue with worker pooling and rate limiting in Elixir. OPQ leverages Erlang’s queue module and Elixir’s GenStage. Originally built to support Crawler.

Check it out: https://github.com/fredwu/opq

Manage multiple sessions and impersonate as other users with Guardian

http://undefinedmethod.com/blog/simple-impersonation-with-guardian/

• Debugger setup fix

Installation Instructions

I haven’t done any property based testing before, so this is obviously quite basic. But I spent half of yesterday playing with the new StreamData library and thought I’d post a little write-up on that.

http://bit.ly/2w107UA

• Formatter
• Parallel test reporting
• OTP 20 support for AtU8 chunk decompilation
• Nix and NixOS support on Mac and Linux
• Mix path quoting fix on Windows
• Reference caching for performance improvements

Installation Instructions

An Elixir library (driver) for clients communicating with MQTT brokers(via the MQTT 3.1.1 protocol). - https://github.com/suvash/hulaaki/

View the complete changelog at https://github.com/suvash/hulaaki/blob/master/CHANGELOG.md

[0.1.0] - 2017-08-12

Added

• Added link to CHANGELOG in the README
• Add instructions on using Makefile for running tests.
• Handle gen_tcp connection failures instead of crashing
• Add automatic ping to server (based on keep alive) and expect ping response with callbacks
• Handle packet ids internally (for control packets with variable header)
• Adds TLS/SSL support for the library
• Implement chunked message receiving so as to parse packets sent together

Fixed

• Replaces all occurences of 65_536 to 65_535 (max limit for 2 bytes)

A library for easily parallelizing slow tasks such as API requests, database queries and the like.

https://github.com/Fabianlindfors/parallel_task

Inspired by Ryan Sydnor’s article Reducing Elixir Backend Time From 120ms to 20ms With Parallelization.

I have two GenServers that use the same handle_* interface so I figured out how to use :via to talk to either through the same means.

https://blog.oestrich.org/2017/08/genserver-via/