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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 networking features and performance improvements for years to come.

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 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.

Tips & Tricks for Migrating to Router 2.0

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.

Start with a Staging …

Planning Your PostgreSQL Migration: Best Practices and Key Considerations

Your organization may have many reasons to move a cloud service from one provider to another. Maybe you’ve found a better performance-versus-cost balance elsewhere. Maybe you’re trying to avoid vendor lock-in. Whatever your reasons, the convenience and general interoperability of cloud services today put you in the driver's seat. You get to piece together the tech stack and the cloud provider(s) that best align with your business.

This includes where you turn for your PostgreSQL database.

If you’re considering migrating your Postgres database to a different cloud provider, such as Heroku, the process might seem daunting. You’re concerned about the risk of data loss or the impact of extended downtime. Are the benefits worth the effort and the risk?

Heroku Open Sources the Twelve-Factor App Definition

Today, we are excited to announce Twelve-Factor is now an open source project. This is a special moment in the journey of Twelve-Factor over the years. Published over a decade ago by Heroku co-founder Adam Wiggins to codify the best practices for writing SaaS apps, the ideas espoused on the Twelve-Factor App website inspired many generations of software engineers and the principles we take for granted in modern application development.

Open sourcing the 12-Factor …

How to Create an AI Agent With Heroku and Agentforce

Heroku is a powerful general-purpose PaaS offering, but when combined with the broader Salesforce portfolio, it excels in unlocking and unifying customer data, regardless of its age, location, size, or structure. Salesforce customers turn to Heroku when they need to leverage high data volumes from sources such as consumer web or mobile apps or when they need scalable compute resources to access and analyze complex data in real time. In this blog, we’ll explore how …

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