Highlights from Git 2.45
The open source Git project just released Git 2.45 with features and bug fixes from over 96 contributors, 38 of them new. We last caught up with you on the latest in Git back when 2.44 was released. To celebrate this most recent release, here is GitHub’s look at some of the most interesting features and changes introduced since last time. Preliminary reftable support Git 2.45 introduces preliminar
Highlights from Git 2.44
Open SourceHighlights from Git 2.44The first Git release of 2024 is here! Take a look at some of our highlights on what's new in Git 2.44. The open source Git project just released Git 2.44 with features and bug fixes from over 85 contributors, 34 of them new. We last caught up with you on the latest in Git back when 2.43 was released. To celebrate this most recent release, here is GitHub’s look a
mTLS: When certificate authentication is done wrong
EngineeringSecuritymTLS: When certificate authentication is done wrongIn this post, we'll deep dive into some interesting attacks on mTLS authentication. We'll have a look at implementation vulnerabilities and how developers can make their mTLS systems vulnerable to user impersonation, privilege escalation, and information leakages. Although X.509 certificates have been here for a while, they have
Highlights from Git 2.42
EngineeringOpen SourceHighlights from Git 2.42Another new release of Git is here! Take a look at some of our highlights on what's new in Git 2.42. The open source Git project just released Git 2.42 with features and bug fixes from over 78 contributors, 17 of them new. We last caught up with you on the latest in Git back when 2.41 was released. To celebrate this most recent release, here’s GitHub’s
Announcing GitHub Actions Deployment Protection Rules, now in public beta
EnterpriseAnnouncing GitHub Actions Deployment Protection Rules, now in public betaCreate and share your own deployment protection rules, or use the rules from our great partners, like Datadog, Honeycomb, New Relic, NodeSource, Sentry, and ServiceNow, to control your deployments with more confidence. And the API is open for the community to build their own rules to make GitHub Enterprise Cloud eve
Introducing self-service SBOMs
Open SourceSecurityIntroducing self-service SBOMsDevelopers and compliance teams get a new SBOM generation tool for cloud repositories. Following the precedent set by Executive Order 14028, security and compliance teams increasingly request software bills of materials (SBOMs) to identify the open source components of their software projects, assess their vulnerability to emerging threats, and veri
Highlights from Git 2.40
EngineeringOpen SourceHighlights from Git 2.40The first Git release of the year is here! Take a look at some of our highlights on what's new in Git 2.40. The open source Git project just released Git 2.40 with features and bug fixes from over 88 contributors, 30 of them new. We last caught up with you on the latest in Git when 2.39 was released. To celebrate this most recent release, here’s GitHub
Pull request merge queue (public beta)
February 8, 2023 Today we are announcing the public beta of pull request merge queue for repos on GitHub Enterprise Cloud and open source organizations! 🎉 Merge queue helps increase velocity in software delivery by automating pull request merges into your busiest branches. Before merge queue, developers were often required to update their pull request branches prior to merging to ensure their cha
The technology behind GitHub’s new code search
To perform a search, we intersect the results of multiple lookups to give us the list of documents where the string appears. With a trigram index you need four lookups: lim, imi, mit, and its in order to fulfill the query for limits. Unlike a hashmap though, these indices are too big to fit in memory, so instead, we build iterators for each index we need to access. These lazily return sorted docum
Introducing required workflows and configuration variables to GitHub Actions | The GitHub Blog
SecurityIntroducing required workflows and configuration variables to GitHub ActionsNow, you can standardize and enforce CI/CD best practices across all repositories in your organization to reduce duplication and secure your DevOps processes. Today, we are introducing two new features for GitHub Actions to help standardize policies and reduce duplication, required workflows and configuration varia
GitHub Actions - Support for organization-wide required workflows public beta | GitHub Changelog
GitHub Actions – Support for organization-wide required workflows public beta githubactionsworkflows January 10, 2023 Today, we are announcing public beta of required workflows in GitHub Actions 🎉 Required workflows allow DevOps teams to define and enforce standard CI/CD practices across many source code repositories within an organization without needing to configure each repository individually
Scaling Git’s garbage collection
EngineeringOpen SourceScaling Git’s garbage collectionA tour of recent work to re-engineer Git’s garbage collection process to scale to our largest and most active repositories. At GitHub, we store a lot of Git data: more than 18.6 petabytes of it, to be precise. That’s more than six times the size of the Library of Congress’s digital collections1. Most of that data comes from the contents of your
Git's database internals II: commit history queries
Avoiding the expensive commit parsing results in a nice constant factor speedup (about 6x in these examples), but we need something more to get even better performance out of certain queries. Reachability indexes One of the most important questions we ask about commits is “can commit A reach commit B?” If we can answer that question quickly, then commands such as git tag --contains and git branch
Git's database internals I: packed object store
EngineeringOpen SourceGit’s database internals I: packed object storeThis blog series will examine Git’s internals to help make your engineering system more efficient. Part I discusses how Git stores its data in packfiles using custom compression techniques. Developers collaborate using Git. It is the medium that allows us to share code, work independently on our own machines, and then finally com
Introducing the new npm Dependency Selector Syntax
August 3, 2022 npm query is a new top-level command as of npm v8.16.0 which accepts a Dependency Selector (as defined in the Dependency Selector Syntax Specification) & returns a filtered JSON Array/NodeList of dependencies from your project. We believe this capability has been a missing piece of the package management ecosystem; With its introduction we hope to unlock the potential for developers
GitHub Pages: Custom GitHub Actions Workflows (beta)
July 27, 2022 You can now deploy to a GitHub Pages site directly from a repository using GitHub Actions, without needing to set up a publishing source. Using Actions to orchestrate Pages publishing provides many more options for choosing your authoring framework (Next.js, Hugo, Gatsby, Jekyll, NuxtJS or other technologies, and the associated versions thereof) as well as giving you finer control ov
Corrupting memory without memory corruption
SecurityCorrupting memory without memory corruptionIn this post I’ll exploit CVE-2022-20186, a vulnerability in the Arm Mali GPU kernel driver and use it to gain arbitrary kernel memory access from an untrusted app on a Pixel 6. This then allows me to gain root and disable SELinux. This vulnerability highlights the strong primitives that an attacker may gain by exploiting errors in the memory mana
Mermaid, topoJSON, geoJSON, and ASCII STL Diagrams Are Now Supported in Markdown and as Files
For more information about using diagrams on GitHub, see Creating diagrams in the GitHub documentation For more information about non-code filetypes on GitHub, see Working with non-code files geoJSON ### Here's a geoJSON map in markdown ```geojson { "type": "Polygon", "coordinates": [ [ [-90,30], [-90,35], [-90,35], [-85,35], [-85,30] ] ] } ``` topoJSON ### Here's a topoJSON map in markdown ```top
Include diagrams in your Markdown files with Mermaid
EngineeringOpen SourceInclude diagrams in your Markdown files with MermaidA picture tells a thousand words. Now you can quickly create and edit diagrams in markdown using words with Mermaid support in your Markdown files. A picture tells a thousand words, but up until now the only way to include pictures and diagrams in your Markdown files on GitHub has been to embed an image. We added support for
Introducing stack graphs
EngineeringOpen SourceIntroducing stack graphsPrecise code navigation is powered by stack graphs, a new open source framework that lets you define the name binding rules for a programming language. Today, we announced the general availability of precise code navigation for all public and private Python repositories on GitHub.com. Precise code navigation is powered by stack graphs, a new open sourc
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