WTF is a Source Map
These days web assets such as JS and CSS aren’t simple text files. Instead, they’re typically minified or come from a complex build process involving compiling or transpiling. For example, CSS can be generated from a SASS file. JS can be compiled from ES6 using Babel. These toolchains make working with assets easier for developers, and make following best practices such as minification much easier
Using Heroku's Expensive Query Dashboard to Speed up your App | Heroku
Products Discover Heroku’s AI PaaS (Platform as a Service), designed for effortless app deployment and scaling. Explore our cloud application platform features, reliable managed data services, and a robust ecosystem to power your modern applications. Elevate Your Salesforce Practice with Heroku Join us for a webinar! Learn how to grow your business with Heroku - explore the new offerings and benef
How the F does Sprockets Load an Asset?
How does an asset get compiled? It’s less of a pipeline and more of a recursive ball of, well assets. To understand the process we will, start off with an asset with no directives (no require at the top). We’ll then walk through all the steps Sprockets goes through until a usable asset is loaded into memory. For this example we will use a js.erb file to see how a “complex” file (i.e. multiple exte
How the F does Sprockets Load an Asset?
How does an asset get compiled? It’s less of a pipeline and more of a recursive ball of, well assets. To understand the process we will, start off with an asset with no directives (no require at the top). We’ll then walk through all the steps Sprockets goes through until a usable asset is loaded into memory. For this example we will use a js.erb file to see how a “complex” file (i.e. multiple exte
Writing a Rails Feature - Blow by Blow
My favorite part of seeing someone live code is all the mistakes they make, but not because I’m a mean awful person who likes to see others fail. Watching others recover from mistakes helps me recover from my mistakes. It also makes me feel better when I see they mess up the same ways that I do. Too often, programmers beat themselves up when they can’t remember an API and have to Google it, or the
Container-Ready Rails 5
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Upgrading to Rails 5 Beta - The Hard Way | Heroku
Products Discover Heroku’s AI PaaS (Platform as a Service), designed for effortless app deployment and scaling. Explore our cloud application platform features, reliable managed data services, and a robust ecosystem to power your modern applications. Elevate Your Salesforce Practice with Heroku Join us for a webinar! Learn how to grow your business with Heroku - explore the new offerings and benef
The Definitive Guide to Ruby Heap Dumps, Part II
Hopefully, from the first post in this two-part series, you've got a good sense of the type of information included in Ruby heap dumps and how to dig into it. Now we'll generate a heap dump off of a Heroku dyno and analyze it. To begin, you'll need a production app running on Heroku, an AWS account, and S3 credentials for storing the dump information. If you don't have an app you want to debug yet
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The Four Year Typo
Puma, Ports, and Polish