Developer Tools
- Engineering
- Last Updated: April 15, 2019
- Jonan Scheffler
Setting up a database is a relatively straightforward process (Heroku has an add-on for that), but getting it to run well in production is sometimes another matter. As your application grows and your data grows along with it, you will likely find a number of performance bottlenecks specifically related to your database, and this post aims to help you diagnose and address those issues when they arise.
As with all components of your infrastructure …
- Engineering
- Last Updated: June 03, 2024
- Jessie Young
Heroku has many public API endpoints. Each of these endpoints needs to be tested so that we know how they work, and documented so that our customers (and other API consumers) know how they work. Follow along, and we’ll learn how Heroku uses JSON Schema to test and document our Platform API – and how it helped us uncover an unexpected bug, rooted in the way the Oj gem parses Big Decimals.
JSON Schema files …
- Engineering
- Last Updated: March 20, 2019
- Amy Unger
This blog post is adapted from a talk given by Amy Unger at RailsConf 2018 titled "Knobs, buttons & switches: Operating your application at scale."
We've all seen applications that keel over when a single, upstream service goes down. Despite our best intentions, sometimes an unexpected outage has us scrambling to make repairs. In this blog post, we'll take a look at some tools you can integrate into your application before disaster strikes. …
- Engineering
- Last Updated: June 03, 2024
- Christine Dodrill
@media only screen and (min-width:415px){#image1{width:60%}}@media only screen and (max-width:414px) and (orientation:portrait){#image1{width:100%}}
Progressive web apps (or PWAs) enable websites to function more like native mobile apps in exchange for some flexibility. You get cross-platform native mobile app functionality (or close to it) without all the overhead of app store approvals and tons of platform-specific native code.
Users can install a progressive web app to their home screen and launch it just like a native app. However, …
- Engineering
- Last Updated: May 02, 2024
- Mars Hall
The recent introduction of Platform Events and Change Data Capture (CDC) in Salesforce has launched us into a new age of integration capabilities. Today, it's possible to develop custom apps that respond to activity in Salesforce. Whether you're creating a memorable customer interaction or implementing an internal workflow for employees, consider an event-sourced design to improve responsiveness and durability of the app.
In this article, we'll look at an event-sourced app architecture that consumes the …
- Engineering
- Last Updated: May 14, 2024
- Richard Schneeman
Debugging is an important skill to develop as you work your way up to more complex projects. Seasoned engineers have a sixth sense for squashing bugs and have built up an impressive collection of tools that help them diagnose and fix bugs.
I’m a member of Heroku’s Ruby team and creator of CodeTriage and today we’ll look at the tools that I used on a journey to fix a gnarly bug in Sprockets. Sprockets …
- Engineering
- Last Updated: June 03, 2024
- Stella Cotton
This blog post is adapted from a talk given by Stella Cotton at RailsConf 2018 titled “So You’ve Got Yourself a Kafka.”
https://www.youtube.com/embed/Rzl4O1oaVy8In recent years, designing software as a collection of services, rather than a single, monolithic codebase, has become a popular way to build applications. In this post, we’ll learn the basics of Kafka and how its event-driven process can be used to power your Rails services. We’ll also talk about …
- Engineering
- Last Updated: March 29, 2024
- Jonan Scheffler
The Ruby committers have again continued their annual holiday tradition of gifting us a new Ruby version: Ruby 2.6 was released today, including the long awaited Just-In-Time (JIT) compiler that the Ruby team has been working on for more than a year.
Just-In-Time compilation requires Ruby to spin up a compiler process on startup, and we’re proud to say that this feature is supported today on Heroku thanks to the diligent efforts of our very …
- Engineering
- Last Updated: June 03, 2024
- Richard Schneeman
Rails applications that use ActiveRecord objects in their cache may experience an issue where the entries cannot be invalidated if all of these conditions are true:
- They are using Rails 5.2+
- They have configured config.active_record.cache_versioning = true
- They are using a cache that is not maintained by Rails, such as dalli_store (2.7.8 or prior)
In this post, we discuss the background to a change in the way that cache keys work with Rails, why this …
Yesterday we announced a major step towards making buildpacks a multi-platform, open standard by contributing to Cloud Native Buildpacks, a Sandbox Project hosted by the Cloud Native Computing Foundation. Today, we are announcing that you can now easily share your buildpacks with the world, by registering them with the Heroku Buildpack Registry.
As of this post, the Buildpack Registry contains over 100 buildpacks created by authors like you. Because of your contributions, Heroku developers …
Subscribe to the full-text RSS feed for Developer Tools.