Engineering
- Engineering
- Last Updated: May 27, 2025
- Alex Arnell
Heroku recently made the next generation platform – Fir – generally available. Fir builds on the strengths of the Cedar generation while introducing a new modern era of developer experience. Fir leverages modern cloud-native technologies to provide a seamless and performant platform.
One of the goals we set out to achieve with Fir is to modernize our platform’s observability architecture. Applications being written today are becoming increasingly more distributed and complex in nature. With this …
- Engineering
- Last Updated: May 22, 2025
- Ken W. Alger
The speed and efficiency of the Go programming language make it popular for backend development. Combine Go with the Gin framework—which offers a fast and minimalistic approach to building web applications—and developers can easily create high-performance APIs and web services. Whether you’re working on a personal project or building a production-ready application, Go and Gin make for an attractive stack perfectly suited for lightweight, scalable web development.
Creating a Go/Gin application might seem straightforward: …
- Engineering
- Last Updated: May 21, 2025
- Andrew Fawcett
SignalR makes it easy to add real-time functionality to .NET web applications—things like live chat, instant notifications, or interactive dashboards. But what happens when your app starts to grow? A single server can only take you so far. At some point, you’ll need to take advantage of SignalR scaling features to scale out your app. In this post, we’ll walk through what it takes to scale a SignalR app to run across multiple servers. We’ll …
- Engineering
- Last Updated: May 05, 2025
- Julián Duque
Generative AI has been one incredible tool to improve my productivity not only for work but for personal projects too. I use it every day, from generating stories and images for my online role playing games to solving code and engineering problems and building awesome demos. Lately I’ve leaned into Cursor as my go‑to AI coding companion. Its inline suggestions and quick edits keep me moving without context‑switching. Connecting Cursor to my apps through the …
- Engineering
- Last Updated: April 16, 2025
- Matt Tanner
With API-driven applications being increasingly common, understanding how your APIs are performing is crucial for success. That’s where the combination of Heroku and Moesif allows developers and their organizations to step up their observability game. In this blog, we will quickly examine how you can integrate Moesif with your Heroku app to begin monetizing and analyzing your API traffic. Let’s kick things off by taking a brief look at both platforms.
- Engineering
- Last Updated: March 27, 2025
- Andrew Fawcett, Andrea Bernicchia
Many advanced users want to use GitHub Actions with their applications on Heroku. Now there’s a straightforward way to use these great systems together, and to meet strong security and compliance requirements at the same time.
- Engineering
- Last Updated: March 24, 2025
- Andrew Fawcett, Manuel Fuchs
Heroku’s commitment to developer productivity shines through in its powerful buildpack system. They handle the heavy lifting of building your app, letting you focus on what matters most: writing code. A prime example is the Heroku Java buildpack, a versatile tool that simplifies deploying Java applications, especially those built with popular frameworks like Spring Boot, Quarkus, and Micronaut.
One of the core strengths of Heroku buildpacks is their automatic nature. They intelligently detect your application’s language and framework, fetching the necessary build tools and configuring the Heroku platform to run your app seamlessly. This means no more wrestling with server configurations or deployment scripts – Heroku handles it all.
- Engineering
- Last Updated: December 17, 2024
- Anush DSouza
The Heroku CLI is a vital tool for developers, providing a simple, extensible way to interact with the powerful features Heroku offers. We understand the importance of keeping the CLI updated to enhance user experience and ensure stability. With the release of Heroku CLI v10, we’re excited to introduce key changes that enhance the user experience and improve compatibility with the next-generation Heroku platform.
Heroku CLI v10 introduces several breaking …
- Engineering
- Last Updated: October 08, 2025
- Elizabeth Cox
Update: Puma 7.0 was released with a fix for the bug described in this article. We recommend Ruby applications upgrade to Puma 7.0.4 or higher.
This week, Heroku made Router 2.0 generally available, bringing features like HTTP/2, performance improvements and reliability enhancements out of the beta program!
Throughout the Router 2.0 beta, our engineering team has addressed several bugs, all fairly straight-forward with one exception involving Puma-based applications. A small subset of Puma applications would experience increased response times upon enabling the Router 2.0 flag, reflected in customers’ Heroku dashboards and router logs. After thorough router investigation and peeling back Puma’s server code, we realized what we had stumbled upon was not actually a Router 2.0 performance issue. The root cause was a bug in Puma! This blog takes a deep dive into that investigation, including some tips for avoiding the bug on the Heroku platform while a fix in Puma is being developed. If you’d like a shorter ride (aka. the TL;DR), skip to The Solution section of this blog. For the full story and all the technical nitty gritty, read on.
- Engineering
- Last Updated: November 21, 2024
- Agne
Heroku Router 2.0 is now generally available, marking a significant step forward in our infrastructure modernization efforts. The new router delivers enhanced performance and introduces new features to improve your applications’ functionality. There are, of course, nuances to be aware of with any new system, and with Router 2.0 set to become the default router soon, we’d like to share some tips and tricks to ensure a smooth and seamless transition.
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