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Digests » 113
Amazing insights into errors and performance issues, plus host metrics and an easy to use custom metrics platform.
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Elixir is a hot and trendy topic nowadays. Of the newer languages that show up periodically on Hacker News, I found that people were the most positive about it, even moreso than Rust. But of course, no language is ever going to be a silver bullet.
A GenServer is stateful process in Elixir that has a generic server behaviour defined. What that means is that we can easily spawn a server process and a messaging system is already there. GenServer provides awesome abstraction for tracing, supervising and calling functions that can run asynchronously in the background.
For many API applications, there comes a time when the application needs to save images uploaded to the server either locally or on a CDN. Luckily for us, Elixir and Phoenix provide the tools we need to build a simple image upload API.
In an effort to better my functional programming and Elixir understanding I thought I’d discuss lenses.
Learn how to deploy an Elixir Phoenix app to Heroku and set up Semaphore to continuously deploy each time tests pass on the master branch.