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Engineering

Behind the Scenes: How Maintaining Cloud Native Buildpacks Powers Platforms Like Heroku

Most developers never see the 11 pack releases we shipped in the last 14 months as pack CLI maintainers. That’s actually a good sign—it means the infrastructure just works. When a critical vulnerability emerges requiring an immediate upgrade, the fix is shipped within days.

Here’s what most developers don’t see: that same security patch now protects every buildpack user across Heroku, Google Cloud, Openshift, VMware Tanzu, and thousands of internal platforms.

From Fragmented Logs to Full-Stack Visibility with SolarWinds Papertrail

Modern applications on Heroku don’t just consist of code. They are living ecosystems comprised of dynos, databases, third-party APIs, and complex user interactions. As these systems scale, so do the logs and metrics. To efficiently extract the signals from the noise you need to understand system health in the context of external factors, like resource limits . While Heroku removes the pain of managing servers, observability is critical for monitoring service interactions and performance optimization.

Building AI-Powered Observability with Heroku Managed Inference and Agents

If you’ve ever debugged a production incident, you know the drill: IDE on one screen, Splunk on another, Sentry open in a third tab, frantically copying error messages between windows while your PagerDuty keeps buzzing.

You ask “What errors spiked in the last hour?” but instead of an answer, you have to context-switch, recall complex query syntax, and mentally correlate log timestamps with your code. By the time you find the relevant log, you’ve lost your flow. Meanwhile the incident clock keeps ticking away.

The workflow below fixes that broken loop. We’ll show you how to use the Model Context Protocol (MCP) and Heroku Managed Inference and Agents to pipe those observability queries directly into your IDE, turning manual hunting into instant answers.

Building AI Search on Heroku

If you’ve built a RAG (Retrieval Augmented Generation) system, you’ve probably hit this wall: your vector search returns 20 documents that are semantically similar to the query, but half of them don’t actually answer it.

A user asks “how do I handle authentication errors?” and gets back documentation about authentication, errors, and error handling in embedding space, but only one or two are actually useful.

This is the gap between demo and production. Most tutorials stop at vector search. This reference architecture shows what comes next. This AI Search reference app shows you how to build a production grade enterprise AI search using Heroku Managed Inference and Agents.

PaaS + IaaS: Heroku and AWS for Cloud-Native Enterprise Agility

For modern enterprises building cloud-native applications, success hinges on achieving maximum development velocity at every scale. Infrastructure as a Service (IaaS) providers like AWS provide hundreds of services with the unmatched reliability and scale needed for enterprise infrastructure, but they can require significant effort and expertise for organizations to be effective and efficient. To achieve true agility, development teams turn to a Platform as a Service (PaaS) like Heroku to streamline the path to production and beyond.

Heroku Support for .NET 10 LTS: What Developers Need to Know

It’s that time of year for .NET when we get a new major version and a bunch of exciting features. .NET Conf 2025 kicked off earlier today, bringing with it the release of .NET 10, as well as ASP.NET Core 10, C# 14, and F# 10. Congrats (and a big thank you) to the .NET team and everyone who helped get .NET 10 out the door.

At Heroku, we believe you should be able to use language and framework releases when they launch, and we prepare accordingly. You can now build and run .NET 10 apps on Heroku, with buildpack support for new SDK features like file-based apps, .slnx solution files, and more.

Upgrade to Puma 7 and Unlock the Power of Fair Scheduled Keep-alive

Puma 7 is here, and that means your Ruby app is now keep-alive ready. This bug, which existed in Puma for years, caused one out of every 10 requests to take 10x longer by unfairly “cutting in line.”  In this post, I’ll cover how web servers work, what caused this bad behavior in Puma, and how it was fixed in Puma 7; specifically an architectural change recommended by MSP-Greg that was needed to address the issue.

Building an Enterprise Data Warehouse on Heroku: From Complex ETL to Seamless Salesforce Integration

Modern businesses don’t just run on Salesforce—they run on entire ecosystems of applications. At Heroku, we operate dozens of services alongside our Salesforce instance such as billing systems, user management platforms, analytics engines, and support tools. Traditional approaches to unifying this data create more problems than they solve.

In this article, we’ll see how we unified Salesforce and multi-app data into a real-time analytics platform that processes over 10 TB data monthly with 99.99% uptime. …

Learn How to Lower Heroku Dyno Latency through Persistent Connections (Keep-alive)

The Performance Penalty of Repeated Connections

Before the latest improvements to the Heroku Router, every connection between the router and your application dyno risked incurring the latency penalty of a TCP slow start. To understand why this is a performance bottleneck for modern web applications, we must look at the fundamentals of the Transmission Control Protocol (TCP) and its history with HTTP.

Maybe you’ve heard of a keep-alive connection, but haven’t thought much about …

Heroku Connect: Faster, More Reliable Data Sync with Salesforce CDC

Imagine this: Your sales team is about to close a major deal. They’re building a custom quote in your app, but they need to see the latest product line items from an Opportunity in Salesforce. They refresh. And wait. The data is stale. The quote gets generated, but it’s missing the latest addition to the deal since your data didn’t sync yet.

This isn’t a hypothetical problem. It’s a frustrating reality for developers who have …

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