# Buildpacks Published articles for Buildpacks. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Bigger Slugs and Greater Build Timeout Flexibility DevFeed: [Bigger Slugs and Greater Build Timeout Flexibility]() Original publisher: [Read original article]() Author: Jesse Brown Published: 2026-03-19T22:28:36Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [Deployment](), [container]() Tags: [buildpacks](), [deployment](), [developer](), [dynos](), [heroku](), [news](), [platform-updates](), [timeout]() ### AI overview Heroku increased the default maximum compressed app slug size from 500MB to 1GB and raised build compile timeouts. The update supports applications with large dependencies, while larger slugs may increase dyno boot times. ### Source excerpt Modern applications, especially those leveraging AI and data-heavy libraries, need more room to breathe. To support these evolving stacks and reduce developer friction, we've increased the default maximum compressed slug size from 500MB to 1GB. Understanding app slugs and deployment App slugs are the container build artifacts produced by Heroku Buildpacks and run in dynos. [...] The post Bigger Slugs and Greater Build Timeout Flexibility appeared first on Heroku. ## Behind the Scenes: How Maintaining Cloud Native Buildpacks Powers Platforms Like Heroku DevFeed: [Behind the Scenes: How Maintaining Cloud Native Buildpacks Powers Platforms Like Heroku]() Original publisher: [Read original article]() Author: Juan Bustamante Published: 2026-03-17T15:00:03Z Content type: opinion Language: en Sources: [Heroku]() Topics: [Heroku](), [Maintainers](), [Cloud Native Ecosystem](), [Command-line interface](), [releases](), [Security](), [vulnerability](), [GitHub Actions](), [GitHub](), [GitHub Issues](), [Google Cloud Platform (GCP)](), [Docker]() Tags: [buildpacks](), [cli](), [cloud](), [cloud-infrastructure](), [cloud-native](), [cloud-native-ecosystem](), [docker](), [ecosystem](), [engineering](), [github](), [github-actions](), [github-issues](), [google-cloud](), [google-cloud-run](), [heroku](), [maintainers](), [maintenance](), [open-source](), [patches](), [platform](), [releases](), [security](), [vulnerability]() ### AI overview This article describes how pack CLI maintainers support Cloud Native Buildpacks through releases, security patches, issue triage, pull request reviews, CI changes, and feature development. It explains how Heroku-funded maintenance benefits Heroku, Google Cloud Run, and internal platform teams. ### Source excerpt 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 [...] The post Behind the Scenes: How Maintaining Cloud Native Buildpacks Powers Platforms Like Heroku appeared first on Heroku. ## Heroku Support for .NET 10 LTS: What Developers Need to Know DevFeed: [Heroku Support for .NET 10 LTS: What Developers Need to Know]() Original publisher: [Read original article]() Author: Rune Soerensen Published: 2025-11-11T08:00:23Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [.NET](), [ASP.NET](), [Deployment](), [migration](), [releases]() Tags: [2025](), [asp-net](), [asp-net-core](), [buildpacks](), [c-sharp](), [deployment](), [developers](), [engineering](), [heroku](), [languages](), [lts](), [migration](), [net](), [nextgen](), [product-features](), [release]() ### AI overview Heroku now supports building and running .NET 10 applications, including ASP.NET Core 10, with buildpack support for features such as file-based apps and solution files. .NET 10 is the new three-year Long Term Support release, while .NET 8 and .NET 9 are scheduled to reach end of support on November 10, 2026. ### Source excerpt 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 [...] The post Heroku Support for .NET 10 LTS: What Developers Need to Know appeared first on Heroku. ## OpenTelemetry, Kubernetes, and Fir: Putting it All Together DevFeed: [OpenTelemetry, Kubernetes, and Fir: Putting it All Together]() Original publisher: [Read original article]() Author: Ken W. Alger Published: 2025-07-09T15:00:13Z Content type: article Language: en Sources: [Heroku]() Topics: [OpenTelemetry](), [Kubernetes](), [Heroku](), [observability](), [telemetry](), [Cloud](), [Microservice]() Tags: [alternatives](), [buildpacks](), [cloud-infrastructure](), [datadog](), [engineering](), [fir](), [heroku](), [jaeger](), [kubernetes](), [microservices](), [observability](), [opentelemetry](), [performance-optimization](), [sdks](), [telemetry]() ### AI overview This article explains how Heroku's Fir cloud platform uses Kubernetes for automated scaling, self-healing, and resource management while exposing a Heroku interface to users. It also describes how OpenTelemetry standardizes telemetry collection and enables distributed tracing, performance diagnosis, and routing data to different monitoring backends without vendor lock-in. ### Source excerpt Modern cloud-native architectures are composed of multiple microservices running across dynamic environments. Effectively diagnosing performance issues, bottlenecks, or failures requires comprehensive observability. For this, many organizations look to OpenTelemetry, which provides a standardized approach to capturing and analyzing telemetry data. Fir is Heroku's next generation cloud platform, designed to offer more modern cloud-native capabilities with [...] The post OpenTelemetry, Kubernetes, and Fir: Putting it All Together appeared first on Heroku. ## Heroku Fir: Dive into the New Platform Capabilities DevFeed: [Heroku Fir: Dive into the New Platform Capabilities]() Original publisher: [Read original article]() Author: Ethan Limchayseng Published: 2025-04-02T06:58:00Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [Cloud Native Ecosystem](), [container images](), [Deployment](), [Open Source](), [Cloud]() Tags: [buildpacks](), [cloud-infrastructure](), [cloud-native](), [container-images](), [deployment](), [developer-tools](), [fir](), [heroku](), [kubernetes](), [news](), [nextgen](), [open-source]() ### AI overview Heroku announces the general availability of Fir, its next-generation platform built on open source standards and cloud-native technologies. The article highlights Cloud Native Buildpacks as the standard build system for creating portable OCI container images and simplifying deployment. ### Source excerpt For years, Heroku has been empowering developers to deploy and scale their applications with ease. We're thrilled to offer the next generation of the Heroku platform, codenamed Fir. Built on open source standards and cloud-native technologies, Fir accelerates your development like never before. A change of this scale is not something that we take lightly. [...] The post Heroku Fir: Dive into the New Platform Capabilities appeared first on Heroku. ## .NET on Heroku: Now Generally Available DevFeed: [.NET on Heroku: Now Generally Available]() Original publisher: [Read original article]() Author: Rune Soerensen Published: 2025-04-02T06:56:00Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [.NET](), [cross-platform](), [ASP.NET Core]() Tags: [announce](), [asp-net](), [asp-net-core](), [buildpacks](), [c-sharp](), [cross-platform](), [f-sharp](), [heroku](), [languages](), [net](), [news](), [sdk]() ### AI overview Heroku announces that .NET support, previously in beta, is now generally available. The release provides production support, documentation, support services, automatic build and deployment behavior, and support for C#, F#, Visual Basic, and ASP.NET Core applications. ### Source excerpt It's never been a more exciting time to be a .NET developer. With .NET (formerly known as .NET Core) approaching its 10-year anniversary this November, the platform has evolved into a powerful, cross-platform ecosystem, embracing modern development practices and powering a vast array of applications. Today, we're thrilled to announce that .NET support on Heroku, [...] The post .NET on Heroku: Now Generally Available appeared first on Heroku. ## Simplifying JVM App Development with Heroku's Buildpack Magic DevFeed: [Simplifying JVM App Development with Heroku's Buildpack Magic]() Original publisher: [Read original article]() Author: Andrew Fawcett Published: 2025-03-24T15:00:00Z Content type: tutorial Language: en Sources: [Heroku]() Topics: [Buildpacks](), [Heroku](), [Java](), [Spring Boot](), [Micronaut](), [Quarkus](), [Development]() Tags: [build-tools](), [buildpacks](), [deployment](), [developer-tools](), [engineering](), [gradle](), [heroku](), [heroku-key-value-store](), [heroku-postgres](), [java](), [languages](), [maven](), [micronaut](), [procfile](), [quarkus](), [spring-boot]() ### AI overview Heroku's Java buildpack automates much of the process of deploying JVM applications. It detects languages and frameworks, obtains build tools, configures the runtime, and can provide framework-specific settings for Spring Boot, Quarkus, and Micronaut applications. ### Source excerpt Heroku's commitment to developer productivity shines through in its powerful buildpack system. They handle the heavy lifting of building your app, letting you focus on what matters most: writing code. A prime example is the Heroku Java buildpack, a versatile tool that simplifies deploying Java applications, especially those built with popular frameworks like Spring Boot, [...] The post Simplifying JVM App Development with Heroku's Buildpack Magic appeared first on Heroku. ## .NET Support on Heroku DevFeed: [.NET Support on Heroku]() Original publisher: [Read original article]() Author: Rune Soerensen Published: 2024-12-03T00:00:00Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [.NET](), [ASP.NET Core](), [Blazor](), [C#](), [F#](), [Visual Basic](), [cross-platform](), [Open Source](), [Databases]() Tags: [announce](), [apis](), [app](), [asp-net](), [asp-net-core](), [blazor](), [buildpacks](), [c-sharp](), [can](), [community](), [core](), [cross-platform](), [deploy](), [developers](), [f-sharp](), [heroku](), [high-performance](), [languages](), [maintainability](), [net](), [news](), [nextgen](), [platform]() ### AI overview Heroku announces that official .NET support is entering public beta. Developers can build and deploy C#, F#, and Visual Basic applications using frameworks including ASP.NET Core and Blazor. The support includes a buildpack, documentation, testing, and guidance for deploying applications, including Blazor apps with Heroku Postgres. ### Source excerpt We're excited to announce that official support for .NET on Heroku is entering public beta starting today. Developers can now build and deploy applications in C#, F#, and Visual Basic, using frameworks like ASP.NET Core and Blazor, all with the simplicity and flexibility of the Heroku platform. .NET has long been one of the most [...] The post .NET Support on Heroku appeared first on Heroku. ## Planting New Platform Roots in Cloud Native with Fir DevFeed: [Planting New Platform Roots in Cloud Native with Fir]() Original publisher: [Read original article]() Author: Terence Lee Published: 2024-12-02T14:15:00Z Content type: article Language: en Sources: [Heroku]() Topics: [Heroku](), [Cloud Native Ecosystem](), [Buildpacks](), [Kubernetes](), [Cloud]() Tags: [buildpacks](), [cloud-infrastructure](), [cloud-native](), [developer-tools](), [fir](), [heroku](), [kubernetes](), [news](), [nextgen](), [open-source](), [opentelemetry](), [platform](), [scalability](), [vendor-lock-in]() ### AI overview Heroku introduces Fir, a new technology stack built on cloud-native technologies and open source standards. The article describes its use of OCI images, Cloud Native Buildpacks, OpenTelemetry, and Kubernetes to support portability, interoperability, scalability, and developer experience. ### Source excerpt Cloud platforms have come a long way since Heroku first set out to empower developers. Today's cloud native development demands even greater flexibility, openness, and scalability. A fun fact about Heroku is that we use trees to denote the generation of the platform technology stack (aka version). In the tradition of Aspen, Bamboo, and Cedar, [...] The post Planting New Platform Roots in Cloud Native with Fir appeared first on Heroku. ## Electron on Heroku DevFeed: [Electron on Heroku]() Original publisher: [Read original article]() Author: Felix Rieseberg Published: 2024-09-30T16:00:00Z Content type: article Language: en Sources: [Heroku]() Topics: [Electron](), [Heroku](), [Node.js](), [Automation](), [GitHub](), [Maintainers](), [Open Source](), [Bots](), [Redis](), [releases]() Tags: [automation](), [bots](), [buildpacks](), [ecosystem](), [electron](), [github](), [heroku](), [javascript](), [maintainers](), [node-js](), [open-source](), [platform-updates](), [redis](), [releases](), [slack]() ### AI overview Electron maintainers describe how they use Heroku to host Electron's update service and automation bots. The article covers a Node.js service integrated with GitHub Releases, a staging and production pipeline, Redis storage, and a Slack bot for Chromium resource links. ### Source excerpt As maintainers of the open source framework Electron, we try to be diligent about the work we take on. Apps like Visual Studio Code, Slack, Notion, or 1Password are built on top of Electron and make use of our unique mix of native code and web technologies to make their users happy. That requires focus: [...] The post Electron on Heroku appeared first on Heroku. ## How to Use pnpm on Heroku DevFeed: [How to Use pnpm on Heroku]() Original publisher: [Read original article]() Author: Colin Casey Published: 2024-07-19T02:12:00Z Content type: tutorial Language: en Sources: [Heroku]() Topics: [pnpm](), [Heroku](), [Package manager](), [Node.js](), [npm](), [Command-line interface](), [Express](), [Git]() Tags: [buildpacks](), [cli](), [dependencies](), [developer-tools](), [development](), [engineering](), [express](), [git](), [heroku](), [how-to](), [install](), [integrity](), [node](), [node-js](), [npm](), [packages](), [pnpm]() ### AI overview This tutorial explains how to use pnpm as an alternative to npm for Node.js applications deployed on Heroku. It covers pnpm's content-addressable store, dependency installation workflow, Corepack-based installation, version pinning, and creating a sample Express application. ### Source excerpt 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 [...] The post How to Use pnpm on Heroku appeared first on Heroku. ## Heroku Joins CNCF as a Platinum Member DevFeed: [Heroku Joins CNCF as a Platinum Member]() Original publisher: [Read original article]() Author: Bob Wise Published: 2024-06-27T23:35:00Z Content type: opinion Language: en Sources: [Heroku]() Topics: [Heroku](), [GitOps](), [Developer experience](), [Kubernetes]() Tags: [buildpacks](), [cloud-infrastructure](), [cncf](), [developer-experience](), [gitops](), [heroku](), [kubernetes](), [news](), [partners]() ### AI overview Heroku is joining the Cloud Native Computing Foundation at the platinum level, upgrading Salesforce's existing CNCF membership. The article places the decision in the context of Heroku's influence on developer experience and cloud-native thinking, and its relationship to Kubernetes and GitOps. ### Source excerpt Heroku is joining the CNCF at the platinum level, upgrading the long-held CNCF Salesforce membership. This marks my third time serving on the CNCF board for different companies, and I'm excited to participate again. Joining the CNCF at the Platinum level signifies a major commitment, reflecting Heroku's dedication to the evolving landscape. My three board [...] The post Heroku Joins CNCF as a Platinum Member appeared first on Heroku. ## Improved Browser Testing on Heroku with Chrome DevFeed: [Improved Browser Testing on Heroku with Chrome]() Original publisher: [Read original article]() Author: Mars Hall Published: 2024-04-09T22:00:00Z Content type: article Language: en Sources: [Heroku]() Topics: [Heroku](), [Browser Automation](), [Chrome](), [Testing](), [CI/CD](), [Continuous Delivery (CD)]() Tags: [automated](), [browser](), [buildpacks](), [chrome](), [ci](), [continuous-delivery](), [continuous-integration](), [developer-tools](), [engineering](), [heroku](), [security](), [testing](), [tests]() ### AI overview Heroku introduces the Chrome for Testing Heroku Buildpack, a community buildpack designed to improve installation reliability for automated browser testing in Heroku apps. It addresses Chrome and Chromedriver version mismatches by keeping their versions aligned for testing environments. ### Source excerpt For developers and businesses offering a web-based product, automated browser testing is a critical tool to ensure continuous delivery of a reliable service. Developers write browser tests by scripting actions against a real browser, simulating real usage by navigating, selecting, and making assertions about web pages and their document elements. In this post, we introduce [...] The post Improved Browser Testing on Heroku with Chrome appeared first on Heroku. ## Heroku Cloud Native Buildpacks: Bringing Heroku Magic to Container Images DevFeed: [Heroku Cloud Native Buildpacks: Bringing Heroku Magic to Container Images]() Original publisher: [Read original article]() Author: Terence Lee Published: 2024-03-19T14:00:00Z Content type: release Language: en Sources: [Heroku]() Topics: [Buildpacks](), [Heroku](), [container images](), [Containers]() Tags: [buildpacks](), [cloud-infrastructure](), [cloud-native](), [container-images](), [containers](), [developer-tools](), [heroku](), [news](), [open-source](), [release]() ### AI overview Heroku announces a preview release of Cloud Native Buildpacks, which turn application code into OCI-compliant container images. The buildpacks support multiple language ecosystems and automate dependency installation, environment setup, compilation, and image-layer assembly. ### Source excerpt 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, [...] The post Heroku Cloud Native Buildpacks: Bringing Heroku Magic to Container Images appeared first on Heroku. ## PointerPodcast - Buildpacks and Extreme Programming DevFeed: [PointerPodcast - Buildpacks and Extreme Programming]() Original publisher: [Read original article]() Published: 2024-01-11T23:00:00Z Content type: opinion Language: en Sources: [Domenico Luciani]() Topics: [Buildpacks](), [Programming]() Tags: [buildpacks](), [programming]() ### AI overview The author describes being interviewed by PointerPodcast about their three-month experience with Take 3 and their work at Tanzu Labs. The episode discusses Buildpacks and Extreme Programming and is available in Italian on Spotify and Apple Podcasts. ### Source excerpt I decided to expose myself more and more, I like to share my opinions and experiences (you can say reading this blog), and this time I decided to attend as a interviewee for a well known Podcast in Italy talking about something I've done for 3 months, are you curious about it? ## Buildpacks - 3 months later DevFeed: [Buildpacks - 3 months later]() Original publisher: [Read original article]() Author: Domenico Luciani Published: 2023-11-15T23:00:00Z Content type: opinion Language: en Sources: [Domenico Luciani]() Topics: [Buildpacks](), [Open Source](), [Containers](), [Cloud Native Ecosystem]() Tags: [buildpacks](), [cloud-native](), [container-image](), [containers](), [dependencies](), [dockerfiles](), [oci](), [open-source](), [optimize](), [use-cases]() ### AI overview The author recounts spending three months on VMware's CNB--Cloud Native Buildpacks--team through the company's Take3 initiative. The article explains that Buildpacks turn source code into OCI-compliant container images, manage dependencies and runtimes, and use separate layers that can be updated independently. ### Source excerpt Since the beginning of my career in this industry, I've always been fascinated by the open-source world. After so many years of contributing on my own, this year, I finally joined... ## Heroku's Next Chapter DevFeed: [Heroku's Next Chapter]() Original publisher: [Read original article]() Author: Bob Wise Published: 2022-08-25T19:58:00Z Content type: release Language: en Sources: [Heroku]() Topics: [Heroku](), [GitHub](), [Buildpacks](), [Security](), [Availability](), [OAuth](), [Open Source]() Tags: [app-architecture](), [availability](), [buildpacks](), [compliance](), [customers](), [developer-experience](), [developer-tools](), [education](), [github](), [heroku](), [news](), [oauth](), [open-source](), [platform-updates](), [product-features](), [security]() ### AI overview Heroku outlines its next chapter, emphasizing support for customers, a public product roadmap on GitHub, a greater focus on mission-critical use, and continued open-source contributions. The company also announces the end of free product plans and deletion of inactive accounts, alongside planned student and nonprofit support. ### Source excerpt Back in May, I wrote about my enthusiasm to be part of the Heroku story, and I remain just as passionate today about helping write the next chapter. I've had many customer meetings over the past few months, and the theme is consistent -- you want to know where we are taking Heroku. We want [...] The post Heroku's Next Chapter appeared first on Heroku. ## Sphinx Build Pack on Heroku DevFeed: [Sphinx Build Pack on Heroku]() Original publisher: [Read original article]() Author: Map Published: 2012-01-25T20:55:56Z Content type: tutorial Language: en Sources: [Craig Kerstiens]() Topics: [Heroku](), [Buildpacks](), [Documentation](), [Markdown](), [Git]() Tags: [buildpacks](), [documentation](), [engineering](), [git](), [heroku](), [markdown](), [python](), [static]() ### AI overview This article describes a Sphinx buildpack for Heroku that automatically builds and runs Sphinx documentation projects. It supports public and private documentation modes, with private access configured through a Google Apps domain config variable. ### Source excerpt Heroku's latest Cedar stack supports running anything. Heroku's officially supported languages actually have their buildpacks public via Heroku's github, you can view several of them at: Python Build Pack Ruby Build Pack Scala Build Pack There have even been some created as fun weekend hacks such as the NES Rom Buildpack. Recently at Heroku my teams have started exploring new forms of collaborating and documenting. In particular editing a wiki for communication is contrary to our regular workflow. Much of our day is spent in code and git. To edit a wiki within a web browser and using some markup we're less familiar with is an overhead we were aiming to reduce. As a result we've tried a few things, the first was simply using a github repo to edit markdown. Personally I have always been a fan of Sphinx documentation. However, Sphinx has no means to secure a site out of the box. Generating the static site then running it being a Rack app to secure it seemed like a few extra steps that would hinder workflow. As a result I set out to build the Sphinx buildpack which would let you push a Sphinx project to Heroku and automatically run your documentation. The buildpack itself supports two modes, public documentation and a private documentation. To have your documentation secured in private mode you simple need to add your google apps domain as a config var heroku config:add DOMAIN=mydomain.com. If you need more information about setting up OpenID check out my recent post Securing your organization with OpenID $ sphinx-quickstart $ git init . $ git add . $ git commit -m initial $ heroku create -s cedar -b http://github.com/craigkerstiens/heroku-buildpack-sphinx.git $ git push heroku master $ heroku open