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Cloud Infrastructure

Improved Heroku App Performance with HTTP/2

Introduction:

We’re excited to announce public beta support for HTTP/2 on both Heroku Common Runtime and Private Spaces. HTTP/2 support is one of the most requested and desired improvements for the Heroku platform. HTTP/2 is significantly faster than HTTP 1.1 by introducing features like multiplexing and header compression to reduce latency and therefore improve the end-user experience of Heroku apps.

Since 2023, we’ve been working on a large platform modernization of our Common …

Expanded Memory and Compute with Heroku’s New Larger Dynos

Introduction

Heroku is excited to introduce nine new dyno types to our fleets and product offerings. In 2014, we introduced Performance-tier dynos, giving our customers fully dedicated resources to run their most compute-intensive workloads. Now in 2024, today’s standards are rapidly increasing as complex applications and growing data volumes consume more memory and carry heavier CPU loads.

With these additional dyno types, we’re excited to enable new use cases on Heroku with enhanced …

Heroku Cloud Native Buildpacks: Bringing Heroku Magic to Container Images

At Heroku, we believe the best choices are the ones you don’t have to make. That’s why we’re thrilled to announce the preview release of Heroku Cloud Native Buildpacks. Our Cloud Native Buildpack (CNB) offering brings the beloved Heroku language and framework experience to your local machine and beyond. Whether you’re coding in Ruby, Node.js, Python, PHP, Go, Java, or Scala, Heroku’s set of opinionated CNBs streamline the process of building and managing containerized …

Heroku Private Spaces Global Expansion: Canada, India, Singapore, and the UK

In May 2023, we announced our limited release of two new Heroku Private Spaces regions: India (Mumbai) and Canada (Montreal). This month, we’re announcing the full general availability of those two regions, along with new Heroku Private Spaces regions for the United Kingdom (London) and Singapore. This expansion enables customers to maintain greater control over where their data is stored and processed. These four new regions fully support Heroku Private Spaces, Heroku Shield Private …

Security Improvement: Subdomain Reuse Mitigation

Summary

Subdomain reuse, also known as subdomain takeover, is a security vulnerability that occurs when an attacker claims and takes control of a target domain. Typically, this happens when an application is deprecated and an attacker directs residual traffic to a host that they control.

As of 14 June 2023, we changed the format of the built-in herokuapp.com domain for Heroku apps. This change improves the security of the platform by preventing subdomain reuse. The …

Heroku Adds Third Availability Zone for Private Spaces

Heroku is excited to announce the addition of a third availability zone (AZ) for our Private Spaces product offering. Three availability zones make Private Space apps more resilient to outages. We’ve prioritized this improvement as part of our focus on mission-critical features to make the Heroku Platform even more reliable. The changeover to three availability zones is fully managed by Heroku. Heroku handles all maintenance, upgrades, and management of Private Spaces, so our customers …

Sunsetting Deploy Hooks, Migrate to App Webhooks

Webhooks are a more secure, reliable, and powerful alternative to Deploy Hooks, and five years ago, we made app webhooks Generally Available. Today, we are deprecating Deploy Hooks and encouraging customers to migrate to app webhooks.

The Adventures of Rendezvous in Heroku’s New Architecture

This article was originally authored by Srinath Ananthakrishnan, an engineer on the Heroku Runtime Networking Team

Summary

This following story outlines a recent issue we saw with migrating one of our internal systems over to a new EC2 substrate and in the process breaking one of our customer’s use cases. We also outline how we went about discovering the root of the issue, how we fixed it, and how we enjoyed solving a complex problem …

Faster Dynos and Improved Performance For All

Since April 2021, the Heroku Runtime team has been working to deploy upgrades to the infrastructure powering Common Runtime apps, and we’re excited to formally announce the performance improvements that customers are already seeing.

When this Changelog post was published in May introducing the changes, almost all Common Runtime apps had been migrated from what we internally called the “classic“ infrastructure to the new “sharded” architecture. In addition to performance enhancements, this migration is expected …

Connection Pooling for Heroku Postgres Is Now Generally Available

We are excited to announce that we are moving Connection Pooling for Heroku Postgres into GA. Connection Pooling unlocks the ability to use up to 10,000 client connections to a Heroku Postgres Database, without adversely impacting performance on the database. This will unlock more complex and higher scale applications with simpler architectures on the Heroku Platform.

Over the years, one of the factors that you have to consider when scaling applications is pressure on the …

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