Speed and scale software

Doing Background Work Using a Native Elixir Approach

By Desmond Bowe

A lot of Elixir alchemists come from a Ruby / Rails background – after all the somewhat easy transition is one of the selling points. When tasked with creating background jobs, Rubyists tend to reach for what they know – queue systems, Redis, RabbitMQ and all that fun stuff. There’s a better, idiomatic way.

https://blog.appsignal.com/2019/05/14/elixir-alchemy-background-processing.html

Using Rust to Scale Elixir for 11 Million Concurrent Users

By Matt Nowack

For “regular” scale tasks, Elixir is pretty fast. Heck, it’s pretty fast even for large-scale applications. But what needs to happen when your scale is not just large, but humongous? The team at Discord attempts an answer.

https://blog.discordapp.com/using-rust-to-scale-elixir-for-11-million-concurrent-users-c6f19fc029d3

A Tale of Query Optimization

By Manish Gill

Here’s a great case study of optimizing one particularly stubborn query. Interesting deep dive through PostgreSQL optimization tools – and proof that they don’t always tell the whole truth.

https://parallelthoughts.xyz/2019/05/a-tale-of-query-optimization/

Migrating millions of Redis keys without downtime

By Gustavo Caso

Redis is a great, versatile tool, and Shopify uses it heavily. At some point however their existing solution stopped scaling and needed an upgrade. But how do you migrate a Redis cluster with millions of entries – while remaining in flight?

http://gustavocaso.github.io/2019/04/30/migrating-millions-of-redis-keys-without-downtime/

A Modular RuboCop

By Bozhidar Batsov

RuboCop has tons of built-in cops that keep us honest and our code output clean. That’s both a boon and a pain, since there are just so many. Here’s an article on how the RuboCop team plans to manage that.

https://metaredux.com/posts/2019/05/22/a-modular-rubocop.html

Bonus! Want more still? Check out an article about the single trade that crashed Bitcoin.

Read also:

• The Ruby Conference of Cracow. We were there!
• Why are people afraid of Ruby? Most popular myths
• Why do software projects fail? Most common reasons