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Heroku Blog

The Next Generation of the Heroku Platform

Over the past year, Heroku has been on a journey of reflection as we rebase the platform to address the changing needs of app teams toward the future without disrupting your business. In the Heroku way, we want to be thoughtful about your experience as we evolve.

When we started Heroku, it was the early days of cloud computing, before Docker and Kubernetes were household names in IT. We launched Heroku (and the platform-as-a-service category) to help teams get to the cloud easily with an elegant user experience in front of a powerful platform that automated a lot of the …

.NET Support on Heroku

We’re excited to announce that official support for .NET on Heroku is entering public beta starting today. Developers can now build and deploy applications in C#, F#, and Visual Basic, using frameworks like ASP.NET Core and Blazor, all with the simplicity and flexibility of the Heroku platform.

.NET has long been one of the most requested frameworks to join Heroku’s lineup, and for good reason. Known for its power and versatility .NET enables developers to build everything from high-performance APIs to complex, full-stack web applications and scalable microservices. Now, developers can combine .NET’s capabilities with Heroku’s streamlined platform for a …

Planting New Platform Roots in Cloud Native with Fir

Cloud platforms have come a long way since Heroku first set out to empower developers. Today’s cloud native development demands even greater flexibility, openness, and scalability. A fun fact about Heroku is that we use trees to denote the generation of the platform technology stack (aka version). In the tradition of Aspen, Bamboo, and Cedar, we are introducing Fir, the latest Heroku technology stack built on open source standards and cloud native technologies.

When we launched Cedar, we introduced a new way of thinking about application development and popularized principles like stateless applications, automated builds, and other twelve-factor principles; …

Heroku AI | Managed Inference and Agents

Over the last couple of years, we’ve repeatedly heard the question “who will build the Heroku of AI?”. The answer to that question is that Heroku will, of course.

We are excited to bring AI to the Heroku platform with the pilot of Managed Inference and Agents, delivered with the graceful developer and operational experience and composability that are the heart of Heroku.

Heroku’s Managed Inference and Agents provide access to leading AI models from the world's top AI providers. These solutions optimize the developer and operator experience to easily extend applications on Heroku with AI. Heroku customers can benefit …

Router 2.0 and HTTP/2 Now Generally Available

Back in September 2023, we announced our Public Beta for our new Common Runtime router: Router 2.0.

Now generally available, Router 2.0 will replace the legacy Common Runtime router in the coming months, and bring new networking capabilities and performance to our customers.

The beta launch of Router 2.0 also enabled us to deliver HTTP/2 to our customers. And now, because Router 2.0 has become generally available, HTTP/2 is also generally available for all common runtime customers and even Private Spaces customers too.

We’re excited to have Router 2.0 be the foundation for Heroku to deliver new cutting edge …

Pumas, Routers & Keepalives—Oh my!

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 …

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