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Yarn: Lock It in for Deterministic Dependency Resolution

Choices are an important part of a healthy open source software community. That’s why we’re excited about Yarn, a new package manager that addresses many of the problems with Node’s default package manager, npm. While npm has done a fantastic job creating a large and vibrant JavaScript ecosystem, I want to share why Yarn is an important addition to the Node.js ecosystem, how it will improve your Node.js development experience, and how Heroku has …

Bundler Changed Where Your Canonical Ruby Information Lives: What to Know

Heroku bumped its Bundler version to 1.13.7 almost a month ago, and since then we’ve had a large number of support tickets opened, many a variant of the following:

Your Ruby version is <X>, but your Gemfile specified <Y>

I wanted to talk about why you might get this error while deploying to Heroku, and what you can do about it, along with some bonus features provided by the new Bundler version.

Why?

First off, …

Announcing the Sydney, Australia Region for Heroku Private Spaces

Today we’re happy to announce that the Sydney, Australia region is now generally available for use with Heroku Private Spaces. Sydney joins Virginia, Oregon, Frankfurt, and Tokyo as regions where Private Spaces can be created by any Heroku Enterprise user. Developers can now deploy Heroku apps closer to customers in the Asia-Pacific area to reduce latency and take advantage of the advanced network & trust controls of Spaces to ensure sensitive data stays protected.

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Announcing Heroku Autoscaling for Web Dynos

We’re excited to announce that Heroku Autoscaling is now generally available for apps using web dynos.

We’ve always made it seamless and simple to scale apps on Heroku – just move the slider. But we want to go further, and help you in the face of unexpected demand spikes or intermittent activity. Part of our core mission is delivering a first-class operational experience that provides proactive notifications, guidance, and—where appropriate—automated responses to particular application events. …

The Heroku 2016 Retrospective

As we begin 2017, we want to thank you for supporting Heroku. Your creativity and innovation continues to inspire us, and pushed us to deliver even more new products and features in 2016. We especially want to thank everyone who helped us by beta testing, sharing Heroku with others, and providing feedback. Here are the highlights of what became generally available in 2016.

Advancing the Developer Experience

Heroku Pipelines

A new way to structure, manage …

Ruby 2.4 Released: Faster Hashes, Unified Integers and Better Rounding

The Ruby maintainers continued their annual tradition by gifting us a new Ruby version to celebrate the holiday: Ruby 2.4 is now available and you can try it out on Heroku.

Ruby 2.4 brings some impressive new features and performance improvements to the table, here are a few of the big ones:

Announcing the New Heroku CLI: Performance and Readability Enhancements

Today we are announcing the newest version of the Heroku CLI. We know how much time you spend in the CLI as developers and how much pride you take in being able to get things done quickly. Our new CLI has big improvements in performance as well as enhanced readability for humans and machines.

Tuned for Performance

CLI response time is made up of two parts: the API response time and the performance of …

Making the Most of PostgreSQL Databases on Heroku

Postgres is our favorite database—it’s reliable, powerful and secure. Here are a few essential tips learned from building, and helping our customers build, apps around Postgres. These tips will help ensure you get the most out of Postgres, whether you’re running it on your own box or using the Heroku Postgres add-on.

Use a Connection Pooler

Postgres connections are not free, as each established connection has a cost. By using a connection pooler, you’ll …

PostgreSQL 9.6 Now Generally Available on Heroku

PostgreSQL 9.6 is now generally available for Heroku Postgres. The main focus of this release is centered around performance. PostgreSQL 9.6 includes enhanced parallelism for key capabilities that sets the stage for significant performance improvements for a variety of analytic and transactional workloads.

With 9.6, certain actions, like individual queries, can be split up into multiple parts and performed in parallel. This means that everything from running queries, creating indexes, and sorting have major …

Data Pipelines with Kafka and Functional Reactive Programming with Node.js

Heroku recently released [a managed Apache Kafka][1] offering. As a Node.js developer, I wanted to demystify Kafka by sharing a simple yet practical use case with the many Node.js developers who are curious how this technology might be useful. At Heroku we use Kafka internally for a number of uses including data pipelines.  I thought that would be a good place to start.

When it comes to actual examples, Java and Scala get all …

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