Replit Engineering

Replit EngineeringNotes from the people building Replit.https://frontier.replit.com/<![CDATA[Inside Replit’s New Sandbox Engine, Part 1: The Path to MicroVMs]]>https://frontier.replit.com/sandbox-engine-microvms-part-1https://frontier.replit.com/sandbox-engine-microvms-part-1Wed, 04 Nov 2026 20:00:00 GMT<![CDATA[Security advisory: Make managed cloud environments the default for AI agents]]>https://frontier.replit.com/managed-cloud-environments-for-ai-agentshttps://frontier.replit.com/managed-cloud-environments-for-ai-agentsMon, 02 Nov 2026 20:00:00 GMT<![CDATA[Agent Habitat Architecture]]>https://frontier.replit.com/agent-habitat-architecturehttps://frontier.replit.com/agent-habitat-architectureWed, 28 Oct 2026 19:00:00 GMT<![CDATA[ViBench 2.0: A Benchmark for Long-Horizon Software Building]]>https://frontier.replit.com/vibench-2-long-horizon-software-benchmarkhttps://frontier.replit.com/vibench-2-long-horizon-software-benchmarkWed, 28 Oct 2026 18:50:00 GMT<![CDATA[Free the models: Harness design at the frontier]]>https://frontier.replit.com/free-the-modelshttps://frontier.replit.com/free-the-modelsTue, 29 Sep 2026 16:00:00 GMT<![CDATA[AI adoption starts with truth]]>https://frontier.replit.com/ai-adoptionhttps://frontier.replit.com/ai-adoptionMon, 03 Aug 2026 16:15:17 GMT<![CDATA[Closing the loop: Evaluating and improving Replit Agent at scale]]>https://frontier.replit.com/evaluating-and-improving-agent-at-scalehttps://frontier.replit.com/evaluating-and-improving-agent-at-scaleTue, 23 Jun 2026 20:22:20 GMT<![CDATA[We Built a Video Rendering Engine by Lying to the Browser About What Time It Is]]>https://frontier.replit.com/browsers-dont-want-to-be-camerashttps://frontier.replit.com/browsers-dont-want-to-be-camerasThu, 26 Feb 2026 16:30:00 GMT<![CDATA[Decision-Time Guidance: Keeping Replit Agent Reliable]]>https://frontier.replit.com/decision-time-guidancehttps://frontier.replit.com/decision-time-guidanceTue, 20 Jan 2026 21:00:00 GMT<![CDATA[How Replit Secures AI-Generated Code]]>https://frontier.replit.com/securing-ai-generated-codehttps://frontier.replit.com/securing-ai-generated-codeThu, 15 Jan 2026 01:00:00 GMT<![CDATA[Inside Replit’s Snapshot Engine: The Tech Making AI Agents Safe]]>https://frontier.replit.com/inside-replits-snapshot-enginehttps://frontier.replit.com/inside-replits-snapshot-engineThu, 18 Dec 2025 01:29:00 GMT<![CDATA[Enabling Agent 3 to Self-Test at Scale with REPL-Based Verification]]>https://frontier.replit.com/automated-self-testinghttps://frontier.replit.com/automated-self-testingMon, 15 Dec 2025 18:31:59 GMT<![CDATA[Building Production-ready Apps with Automated Database Migrations on Replit]]>https://frontier.replit.com/production-databases-automated-migrationshttps://frontier.replit.com/production-databases-automated-migrationsWed, 10 Dec 2025 01:24:31 GMT<![CDATA[Using Tvix Store to Reduce Nix Storage Costs by 90%]]>https://frontier.replit.com/tvix-storehttps://frontier.replit.com/tvix-storeThu, 06 Mar 2025 04:46:22 GMT<![CDATA[Introducing Workflows]]>https://frontier.replit.com/introducing-workflowshttps://frontier.replit.com/introducing-workflowsThu, 27 Feb 2025 17:37:59 GMT<![CDATA[Replit's All-new Database Editor]]>https://frontier.replit.com/database-editorhttps://frontier.replit.com/database-editorWed, 26 Feb 2025 17:16:20 GMT<![CDATA[So you suspect you have a memory leak...]]>https://frontier.replit.com/finding-and-solving-memory-leakshttps://frontier.replit.com/finding-and-solving-memory-leaksTue, 26 Nov 2024 14:28:53 GMT<![CDATA[Shell2: 200× faster, persisted, multiplayer-native Shells]]>https://frontier.replit.com/shell2https://frontier.replit.com/shell2Fri, 11 Oct 2024 23:55:14 GMT<![CDATA[How Replit makes sense of code at scale]]>https://frontier.replit.com/how-replit-makes-sense-of-code-at-scale-ai-datahttps://frontier.replit.com/how-replit-makes-sense-of-code-at-scale-ai-dataWed, 14 Aug 2024 22:52:33 GMT<![CDATA[Improved Dependency Management]]>https://frontier.replit.com/improved-dependency-managementhttps://frontier.replit.com/improved-dependency-managementMon, 01 Jul 2024 16:18:22 GMT<![CDATA[Advanced port configuration]]>https://frontier.replit.com/portshttps://frontier.replit.com/portsFri, 05 Apr 2024 15:00:00 GMT<![CDATA[Searching Nixpkgs in Under 30 Milliseconds]]>https://frontier.replit.com/nixpkgs-searchhttps://frontier.replit.com/nixpkgs-searchFri, 29 Mar 2024 15:39:44 GMT<![CDATA[Replit + pip ]]>https://frontier.replit.com/piphttps://frontier.replit.com/pipThu, 15 Feb 2024 17:00:00 GMT<![CDATA[Easier Editing for .replit Files]]>https://frontier.replit.com/replitfilehttps://frontier.replit.com/replitfileTue, 06 Feb 2024 16:00:00 GMT<![CDATA[Landscape or Portrait? You Decide]]>https://frontier.replit.com/rotation-on-mobilehttps://frontier.replit.com/rotation-on-mobileThu, 28 Dec 2023 17:00:00 GMT<![CDATA[Dec 12 Incident Update: Secrets and repl.co Static Hosting Unavailable]]>https://frontier.replit.com/dec-12-secrets-static-hostinghttps://frontier.replit.com/dec-12-secrets-static-hostingThu, 21 Dec 2023 09:00:00 GMT<![CDATA[GitHub x Replit Workflows: Enhancing Developer Productivity]]>https://frontier.replit.com/githubhttps://frontier.replit.com/githubTue, 19 Dec 2023 17:00:00 GMT<![CDATA[Skip the README, let us install for you]]>https://frontier.replit.com/system-dependencies-pythonhttps://frontier.replit.com/system-dependencies-pythonFri, 15 Dec 2023 17:00:00 GMT<![CDATA[New and Improved Console]]>https://frontier.replit.com/new-and-improved-consolehttps://frontier.replit.com/new-and-improved-consoleThu, 07 Dec 2023 18:00:40 GMT<![CDATA[System Dependencies on Replit]]>https://frontier.replit.com/system-dependencies-on-replithttps://frontier.replit.com/system-dependencies-on-replitFri, 20 Oct 2023 20:51:00 GMT<![CDATA[Tabs and Spaces - Smarter Indentation]]>https://frontier.replit.com/smarter-indentationhttps://frontier.replit.com/smarter-indentationThu, 12 Oct 2023 20:51:00 GMT<![CDATA[Sep 29 Incident Update: Read-Only Repls]]>https://frontier.replit.com/sep-29-read-only-replshttps://frontier.replit.com/sep-29-read-only-replsWed, 04 Oct 2023 19:43:00 GMT<![CDATA[Changes to Hosting on Replit]]>https://frontier.replit.com/hosting-changeshttps://frontier.replit.com/hosting-changesThu, 28 Sep 2023 19:43:00 GMT<![CDATA[Upgrading Analytics for Deployments]]>https://frontier.replit.com/deployments-analyticshttps://frontier.replit.com/deployments-analyticsMon, 28 Aug 2023 00:00:00 GMT<![CDATA[Packages: Powered Up]]>https://frontier.replit.com/packages-powered-uphttps://frontier.replit.com/packages-powered-upFri, 25 Aug 2023 00:00:00 GMT<![CDATA[Performance Mystery: Is Golang's Startup Time Slow?]]>https://frontier.replit.com/golang-performancehttps://frontier.replit.com/golang-performanceFri, 18 Aug 2023 00:00:00 GMT<![CDATA[Improving the Inline Ghostwriter Experience]]>https://frontier.replit.com/ghostwriter-inlinehttps://frontier.replit.com/ghostwriter-inlineFri, 11 Aug 2023 00:00:00 GMT<![CDATA[Expand possibilities on Replit with Expandable Storage]]>https://frontier.replit.com/expandable-storagehttps://frontier.replit.com/expandable-storageTue, 08 Aug 2023 00:00:00 GMT<![CDATA[Why We Changed Our Resource Limits and Plans]]>https://frontier.replit.com/new-limits-and-planshttps://frontier.replit.com/new-limits-and-plansMon, 07 Aug 2023 00:00:00 GMT<![CDATA[Fewer Restarts and Faster Networking for All]]>https://frontier.replit.com/faster-networkinghttps://frontier.replit.com/faster-networkingFri, 04 Aug 2023 00:00:00 GMT<![CDATA[Rebuilding the Replit Filetree for Superior Performance and Accessibility]]>https://frontier.replit.com/filetree-updateshttps://frontier.replit.com/filetree-updatesTue, 01 Aug 2023 00:00:00 GMT<![CDATA[Replit Deployments: 3x Faster and Even More Features]]>https://frontier.replit.com/deployments-updateshttps://frontier.replit.com/deployments-updatesMon, 31 Jul 2023 00:00:00 GMT<![CDATA[Replit Storage: The Next Generation]]>https://frontier.replit.com/replit-storage-the-next-generationhttps://frontier.replit.com/replit-storage-the-next-generationWed, 19 Jul 2023 23:00:00 GMT<![CDATA[The Journey To Code Search]]>https://frontier.replit.com/the-journey-to-code-searchhttps://frontier.replit.com/the-journey-to-code-searchSun, 25 Jun 2023 00:00:00 GMT<![CDATA[June 6, 2023, Single-Sign-On Security Vulnerability]]>https://frontier.replit.com/june-6-sso-security-vulnerabilityhttps://frontier.replit.com/june-6-sso-security-vulnerabilityMon, 12 Jun 2023 12:00:00 GMT<![CDATA[Configurable Keybindings for the Workspace]]>https://frontier.replit.com/configurable-keybindings-for-the-workspacehttps://frontier.replit.com/configurable-keybindings-for-the-workspaceTue, 30 May 2023 00:00:00 GMT<![CDATA[Super Colliding Nix Stores: Nix Flakes for Millions of Developers]]>https://frontier.replit.com/super-colliding-nix-storeshttps://frontier.replit.com/super-colliding-nix-storesThu, 25 May 2023 17:40:00 GMT<![CDATA[Making Git Good]]>https://frontier.replit.com/git-goodhttps://frontier.replit.com/git-goodMon, 15 May 2023 00:00:00 GMT<![CDATA[How to train your own Large Language Models]]>https://frontier.replit.com/llm-traininghttps://frontier.replit.com/llm-trainingWed, 19 Apr 2023 00:00:00 GMT<![CDATA[Hackers, Pros, and Teams users can now code for hours without restarts]]>https://frontier.replit.com/regular-vmshttps://frontier.replit.com/regular-vmsThu, 06 Apr 2023 00:00:00 GMT<![CDATA[April 2 Potential GitHub Credentials Exposure]]>https://frontier.replit.com/april-02-potential-github-credentials-exposurehttps://frontier.replit.com/april-02-potential-github-credentials-exposureTue, 04 Apr 2023 02:00:00 GMT<![CDATA[Announcing Outbound Data Transfer Limits]]>https://frontier.replit.com/announcing-outbound-data-transfer-limitshttps://frontier.replit.com/announcing-outbound-data-transfer-limitsWed, 22 Mar 2023 14:45:00 GMT<![CDATA[Worldwide Repls, part 3: Firing Up The Engines]]>https://frontier.replit.com/geo-part-3-deployhttps://frontier.replit.com/geo-part-3-deployThu, 16 Mar 2023 16:00:00 GMT<![CDATA[Remote Access to Your Repls via SSH]]>https://frontier.replit.com/sshhttps://frontier.replit.com/sshThu, 02 Mar 2023 20:00:00 GMT<![CDATA[Replit x Weights & Biases Machine Learning Hackathon Winners]]>https://frontier.replit.com/ml-hackathon-winnershttps://frontier.replit.com/ml-hackathon-winnersTue, 21 Feb 2023 00:00:00 GMT<![CDATA[Apply for Replit’s first Machine Learning Hackathon]]>https://frontier.replit.com/ml-hackathonhttps://frontier.replit.com/ml-hackathonWed, 11 Jan 2023 00:00:00 GMT<![CDATA[Making Repl Identity More Accessible]]>https://frontier.replit.com/repl-identity-via-clihttps://frontier.replit.com/repl-identity-via-cliTue, 10 Jan 2023 22:00:00 GMT<![CDATA[Redesigning Cycles Transaction History]]>https://frontier.replit.com/cycles-transaction-historyhttps://frontier.replit.com/cycles-transaction-historyFri, 23 Dec 2022 00:00:00 GMT<![CDATA[Branching out the Filetree]]>https://frontier.replit.com/filetreehttps://frontier.replit.com/filetreeMon, 14 Nov 2022 00:00:00 GMT<![CDATA[Worldwide Repls, part 2: Load balancing for fun (although not quite profit)]]>https://frontier.replit.com/geo-part-2-loadbalancinghttps://frontier.replit.com/geo-part-2-loadbalancingFri, 23 Sep 2022 18:00:00 GMT<![CDATA[History++ - A Better Way to Do Versioning]]>https://frontier.replit.com/history2-releasehttps://frontier.replit.com/history2-releaseThu, 15 Sep 2022 00:00:00 GMT<![CDATA[Zero-Click Auth For Your Apps]]>https://frontier.replit.com/repl-identityhttps://frontier.replit.com/repl-identityTue, 02 Aug 2022 16:00:00 GMT<![CDATA[Get Replit Famous]]>https://frontier.replit.com/replit-famoushttps://frontier.replit.com/replit-famousThu, 28 Jul 2022 00:00:00 GMT<![CDATA[Revamping the GitHub Import Flow]]>https://frontier.replit.com/nix-github-importshttps://frontier.replit.com/nix-github-importsThu, 21 Jul 2022 00:00:00 GMT<![CDATA[Inspect your HTML/CSS/JS Repls with native DevTools]]>https://frontier.replit.com/devtoolshttps://frontier.replit.com/devtoolsFri, 15 Jul 2022 00:00:00 GMT<![CDATA[Leaky UIs]]>https://frontier.replit.com/leaky-uishttps://frontier.replit.com/leaky-uisWed, 13 Jul 2022 00:30:00 GMT<![CDATA[Worldwide Repls, part 1: The Control Plane]]>https://frontier.replit.com/geo-part-1-controlplanehttps://frontier.replit.com/geo-part-1-controlplaneFri, 08 Jul 2022 17:00:00 GMT<![CDATA[Improving Domain Linking for Repls]]>https://frontier.replit.com/improved-domain-linkinghttps://frontier.replit.com/improved-domain-linkingMon, 04 Jul 2022 16:00:00 GMT<![CDATA[QLTY SZN 1]]>https://frontier.replit.com/qlty-sznhttps://frontier.replit.com/qlty-sznMon, 18 Apr 2022 00:00:00 GMT<![CDATA[Escaping Dirty Pipe (a.k.a. CVE-2022-0847), mostly unscathed]]>https://frontier.replit.com/dirtypipe-kernel-vulnerabilityhttps://frontier.replit.com/dirtypipe-kernel-vulnerabilityWed, 16 Mar 2022 18:00:00 GMT<![CDATA[Betting on CodeMirror]]>https://frontier.replit.com/codemirrorhttps://frontier.replit.com/codemirrorThu, 10 Mar 2022 00:00:00 GMT<![CDATA[All New Repls are Powered By Nix]]>https://frontier.replit.com/powered-by-nixhttps://frontier.replit.com/powered-by-nixWed, 23 Feb 2022 17:00:00 GMT<![CDATA[Announcing File Persistence in Hosted Apps… for Everyone!]]>https://frontier.replit.com/filesystem-persistence-for-allhttps://frontier.replit.com/filesystem-persistence-for-allFri, 11 Feb 2022 19:45:00 GMT<![CDATA[Making new Python repls 100x faster to start up]]>https://frontier.replit.com/python-new-templatehttps://frontier.replit.com/python-new-templateFri, 04 Feb 2022 19:45:00 GMT<![CDATA[Understanding Repl Resource Utilization]]>https://frontier.replit.com/repl-resourceshttps://frontier.replit.com/repl-resourcesMon, 31 Jan 2022 20:00:00 GMT<![CDATA[Going Where the Next Billion Creators Are]]>https://frontier.replit.com/mobile-v2https://frontier.replit.com/mobile-v2Fri, 21 Jan 2022 08:00:00 GMT<![CDATA[Migrating our Web App from Heroku to GCP]]>https://frontier.replit.com/heroku2gcphttps://frontier.replit.com/heroku2gcpTue, 11 Jan 2022 20:00:00 GMT<![CDATA[Implementing RUI, Replit's Design System]]>https://frontier.replit.com/rui-enghttps://frontier.replit.com/rui-engThu, 23 Dec 2021 00:00:00 GMT<![CDATA[Repl Space and Templates]]>https://frontier.replit.com/replspace-templateshttps://frontier.replit.com/replspace-templatesWed, 15 Dec 2021 05:00:00 GMT<![CDATA[Ace, CodeMirror, and Monaco: A Comparison of the Code Editors You Use in the Browser]]>https://frontier.replit.com/code-editorshttps://frontier.replit.com/code-editorsTue, 14 Dec 2021 00:00:00 GMT<![CDATA[Will Nix Overtake Docker?]]>https://frontier.replit.com/nix-vs-dockerhttps://frontier.replit.com/nix-vs-dockerMon, 29 Nov 2021 20:00:00 GMT<![CDATA[How to Set Up Your Own Mastodon Instance with Replit]]>https://frontier.replit.com/setting-up-a-mastodonhttps://frontier.replit.com/setting-up-a-mastodonMon, 22 Nov 2021 00:00:00 GMT<![CDATA[Announcing File Persistence in Hosted Apps for Hackers]]>https://frontier.replit.com/replspace-filesystemshttps://frontier.replit.com/replspace-filesystemsThu, 11 Nov 2021 21:30:00 GMT<![CDATA[Betting on Nix: donating $25K to the NixOS Foundation]]>https://frontier.replit.com/betting-on-nixhttps://frontier.replit.com/betting-on-nixMon, 25 Oct 2021 00:06:40 GMT<![CDATA[Solidity on Replit: Diving into Web3]]>https://frontier.replit.com/solidityhttps://frontier.replit.com/solidityThu, 14 Oct 2021 00:06:40 GMT<![CDATA[A New Code Editor for Mobile - CodeMirror 6]]>https://frontier.replit.com/codemirror-mobilehttps://frontier.replit.com/codemirror-mobileTue, 21 Sep 2021 00:00:00 GMT<![CDATA[The Internet of Fun]]>https://frontier.replit.com/internet-of-funhttps://frontier.replit.com/internet-of-funTue, 02 Feb 2021 05:00:00 GMT<![CDATA[We've Been Pwned]]>https://frontier.replit.com/pwndhttps://frontier.replit.com/pwndThu, 03 Dec 2020 05:00:00 GMT<![CDATA[Don't Let Your Development Environment Rot]]>https://frontier.replit.com/rothttps://frontier.replit.com/rotMon, 04 Jun 2018 07:00:00 GMT<![CDATA[Building Towards a Holistic Development Service]]>https://frontier.replit.com/holistichttps://frontier.replit.com/holisticMon, 27 Mar 2017 07:00:00 GMT<![CDATA[Learning Devops & AWS on the Job: Building and Scaling a Service]]>https://frontier.replit.com/aws-simple-guidehttps://frontier.replit.com/aws-simple-guideMon, 14 Nov 2016 08:00:00 GMT<![CDATA[API Docs]]>https://frontier.replit.com/api-docshttps://frontier.replit.com/api-docsFri, 24 Jun 2016 07:00:00 GMT