Blogs
Using Multiple Databases in Rails 6 to Log Access Requests
Imagine a situation where you need to log every attempt at accessing your application regardless of how many application servers are deployed and when. Text logs aren’t enough and can be difficult to aggregate across multiple disparate filesystems...
The Life-Changing Magic of Tidying Ruby Object Allocations
Your app is slow. It does not spark joy. This post will use memory allocation profiling tools to discover performance hotspots, even when they're coming from inside a library. We will use this technique with a real-world application to identify a ...
Importing data quickly in Ruby on Rails applications
Application frameworks often provide their own out of the box services for interacting with databases. This works great when processing data in a onesie-twosie fashion, but what about large batches of data?I ran into this problem over a decade ago...
These Rails apps are overpacking their JavaScript bundles
You might think dividing your JavaScript into multiple bundles will help improve page load performance. When done incorrectly with Webpacker, it's possible to make things worse.This mistake appears relatively common. As I'll share in this post, I'...
Performance-M Dynos Considered Harmful to Your Wallet
When you're on a cloud hosting provider, there are often several options provided for the size and type of server you can rent. For example, AWS has the m and c series instance types, Heroku has 4 or 5 different dyno types and sizes, and Google Cl...