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Engineering

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 …

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 …

Testing a React App in Chrome with Heroku CI

When building web applications, unit testing your individual components is certainly important. However, end-to-end testing provides assurance that the final user experience of your components chained together matches the expected behavior. Testing web application behavior locally in your browser can be helpful, but this approach isn’t efficient or reliable, especially as your application grows more complex.

Ideally, end-to-end tests in your browser are automated and integrated into your CI pipeline. Every time you commit a code change, your tests will run. Passing tests gives you the confidence that the application — as your end users experience it — behaves as expected.

What is Data Residency? Data Residency Concerns for Global Applications

Data Residency Compliance Is Possible with the Right Cloud Provider

Because today’s companies operate in the cloud, they can reach a global audience with ease. At any given moment, you could have customers from Indiana, Indonesia, and Ireland using your services or purchasing your products. With such a widespread customer base, your business data will inevitably cross borders. What does this mean for data privacy, protection, and compliance?

If your company deals with customers on a global — or at the very least, multi-national — scale, then understanding the concept of data residency is essential. Data residency deals with the laws and regulations that dictate where data must be stored and managed. Compliance with the relevant data residency laws keeps you in good business standing and builds trust with your customers.

Building an Event-Driven Architecture with Managed Data Services

Modern applications have an unceasing buzz of user activity and data flows. Users send a flurry of one-click reactions to social media posts. Wearable tech and other IoT sensors work nonstop to transmit event data from their environments. Meanwhile, customers on e-commerce sites perform shopping cart actions or product searches which can bring immediate impact to operations. Today’s software organizations need the ability to process and respond to this rich stream of real-time data.

That’s why they adopt an event-driven architecture (EDA) for their applications.

Mastering API Gateway Integration: Salesforce, Heroku, and MuleSoft Anypoint Flex Gateway

In today’s fast-paced digital world, companies are looking for ways to expose their APIs and microservices to the internet while enhancing their overall API security. MuleSoft Anypoint Flex Gateway is a powerful solution that solves this problem. Let’s walk through deploying the Anypoint Flex Gateway on Heroku in a few straightforward steps. You’ll learn how to connect your private APIs and microservices on the Heroku platform through the Anypoint Flex Gateway which provide comprehensive API …

Heroku CLI v9: Infrastructure Upgrades and oclif Transition

Introduction

The Heroku CLI is an incredible tool. It’s simple, extendable, and allows you to interact with all the Heroku functionality you depend on day to day. For this reason, it’s incredibly important for us to keep it up to date. Today, we’re excited to highlight a major upgrade with the release of Heroku CLI v9.0.0, designed to streamline contributions, building, and iteration processes through the powerful oclif platform.

What’s New in Version 9.0.0?

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How to Use pnpm on Heroku

What is pnpm?

Pnpm is a fast, disk-efficient Node package manager used as an alternative to npm. The Heroku Node.js buildpack now supports pnpm. Early Node.js application owners who’ve taken advantage of pnpm support have seen 10-40% faster install times compared to NPM on Heroku deployments. It’s an excellent choice for managing packages in the Node.js ecosystem because it:

Optimizing Data Reliability: Heroku Connect & Drift Detection

Heroku Connect makes it easy to sync data at scale between Salesforce and Heroku Postgres. You can build Heroku apps that bidirectionally share data in your Postgres database with your contacts, accounts, and other custom objects in Salesforce. Easily configured with a point-and-click UI, you can get the integration up and running in minutes without writing code or worrying about API limits. In this post, we introduce our recent improvements to Heroku Connect on …

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