# The JetBrains Blog Developer Tools for Professionals and Teams This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Building a RAG Pipeline for Semantic Code Search: A Developer Diary and Field Notes DevFeed: [Building a RAG Pipeline for Semantic Code Search: A Developer Diary and Field Notes]() Original publisher: [Read original article]() Author: Adam Malek Published: 2026-09-17T12:39:40Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [Retrieval Augmented Generation (RAG)](), [code search](), [Parsing](), [jetbrains](), [Large Language Model]() Tags: [agentic-ai](), [ai](), [code-search](), [jetbrains](), [llm](), [llm-agents](), [parsing](), [rag](), [search](), [semantic]() ### AI overview Part 1 of a developer diary explains how JetBrains built a RAG pipeline for semantic code search, covering parsing, chunking, and vectorization. The pipeline is intended to give LLM agents precise, citable evidence from real repositories and retrieve code by meaning rather than exact keywords. ### Source excerpt Part 1: Parsing, chunking, and vectorization Some time ago, we set out to build the best semantic code search platform we could: a RAG pipeline that gives LLM agents precise, citable evidence from real repositories instead of whatever grep happens to surface. The eventual solution was JetBrains Context. We got it working, we got it [...] ## New Bug-Fix Releases Are Available for MPS Versions 2026.1.1, 2025.3.2, 2025.2.4, and 2025.1.4 DevFeed: [New Bug-Fix Releases Are Available for MPS Versions 2026.1.1, 2025.3.2, 2025.2.4, and 2025.1.4]() Original publisher: [Read original article]() Author: Vaclav Pech Published: 2026-09-16T20:06:31Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [JetBrains MPS](), [releases](), [version](), [jetbrains]() Tags: [2](), [2025](), [2026](), [3](), [agent](), [agents](), [bug](), [changes](), [create](), [development](), [diagnostics](), [editor](), [improvements](), [major](), [manipulate](), [mps](), [practical](), [release](), [releases](), [updates](), [version]() ### AI overview JetBrains has released bug-fix updates for MPS versions 2026.1.1, 2025.3.2, 2025.2.4, and 2025.1.4. The MPS 2026.1.1 update includes improvements to the Projectional Agent Toolkit, editor context, diagnostics, agent guidance, and test execution. ### Source excerpt We've released updates for multiple major MPS versions that fix several issues. DOWNLOAD MPS 2026.1.1 Check out all the updates in each particular version below: MPS 2026.1.1 The Projectional Agent Toolkit receives several practical improvements that allow agents to: See and invoke intentions and quick-fixes on individual nodes. Manipulate NodeAttributes, PropertyAttributes, and others. Create copies [...] ## Logpoints Walkthrough DevFeed: [Logpoints Walkthrough]() Original publisher: [Read original article]() Author: Igor Kulakov Published: 2026-09-16T14:14:04Z Content type: tutorial Language: en Sources: [The JetBrains Blog]() Topics: [IntelliJ IDEA](), [debug](), [debugging](), [gRPC](), [Java](), [2026.2]() Tags: [2026-2](), [bug](), [client](), [command-line](), [debug](), [debugger](), [debugging](), [debugging-tools](), [idea](), [intellij](), [intellij-idea](), [java](), [kotlin](), [logpoints]() ### AI overview This walkthrough explains how to use logpoints in IntelliJ IDEA to investigate a bug in a gRPC client-server example that returns incorrect discount values. It covers reproducing the issue, attaching the debugger to the server, and observing program behavior without suspending execution, including improvements in IntelliJ IDEA 2026.2. ### Source excerpt Modern development tools, especially IntelliJ IDEA, have such comprehensive debugging support that for virtually any niche use case, there is a specialized tool for the job. This can make it hard to know where to begin. If you are new to debugging tools and want the biggest return on your learning investment, the best feature [...] ## Rider and ReSharper 2026.2.2 Are Out! DevFeed: [Rider and ReSharper 2026.2.2 Are Out!]() Original publisher: [Read original article]() Author: Alexander Kurakin Published: 2026-09-16T14:12:44Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [rider](), [resharper](), [AI-assisted coding](), [test-coverage]() Tags: [2026](), [ai-agent-hooks](), [ai-agents](), [code-coverage](), [coverage](), [hooks](), [jetbrains](), [macos](), [mcp](), [net](), [net-tools](), [releases](), [resharper](), [rider](), [update]() ### AI overview JetBrains releases Rider, ReSharper, and .NET tools 2026.2.2, adding an AI Agent Setup widget in Rider, more targeted hook feedback for coding agents, TUnit coverage support, and fixes including a macOS freezing issue. ### Source excerpt We've released version 2026.2.2 of ReSharper, Rider, and .NET tools. You can install this update from inside the tools themselves, through the Toolbox App, or on our website. Here's what's new in this update. Rider 2026.2.2 AI Agent Setup widget We've recently added a wide range of features to help you work with coding agents [...] ## Behind the Scenes: How the OpenTelemetry Plugin Maps Your Microservices in Real-Time DevFeed: [Behind the Scenes: How the OpenTelemetry Plugin Maps Your Microservices in Real-Time]() Original publisher: [Read original article]() Author: Egor Klimov Published: 2026-09-16T12:34:47Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [OpenTelemetry](), [Microservices](), [observability](), [telemetry](), [Traces](), [ide]() Tags: [all-things-web](), [backstage](), [environment-variables](), [goland](), [ide](), [idea](), [intellij-idea](), [intellij-platform](), [jetbrains](), [microservices](), [observability](), [opentelemetry](), [performance-optimization](), [plugin-development](), [plugin-highlights](), [plugins](), [pycharm](), [research](), [rider](), [telemetry](), [traces](), [webstorm]() ### AI overview This article explains how the JetBrains OpenTelemetry Plugin generates a service map from runtime telemetry. It describes using logs, metrics, and especially standardized trace spans to visualize how microservices communicate, along with the plugin's lightweight local OpenTelemetry backend. ### Source excerpt We've all been there: you join a new project, and the first thing you ask for is the architecture diagram. You're handed a diagram that looks great, but after a week of debugging, you realize it's six months out of date. Service A hasn't talked to Service B since the spring, and there's a new [...] ## IntelliJ IDEA 2026.2.3 Is Out! DevFeed: [IntelliJ IDEA 2026.2.3 Is Out!]() Original publisher: [Read original article]() Author: Maria Kosukhina Published: 2026-09-16T10:53:53Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [IntelliJ IDEA](), [2026.2](), [Release notes](), [releases](), [Maven](), [Markdown](), [plantuml](), [WSL2](), [Ubuntu]() Tags: [2026-2](), [intellij-idea](), [markdown](), [maven](), [plantuml](), [release-notes](), [ubuntu](), [wsl2]() ### AI overview JetBrains released IntelliJ IDEA 2026.2.3 with fixes and improvements affecting Maven project data, IDE freezes, Markdown preview scrolling, PlantUML support, and applications using WSL2 mirrored networking. ### Source excerpt We've just released IntelliJ IDEA 2026.2.3. You can update to this version from inside the IDE, using the Toolbox App, or using snaps if you are a Ubuntu user. You can also download it from our website. The latest update brings the following improvements: For a comprehensive overview of the fixes, see the release notes. [...] ## Java 27 in IntelliJ IDEA DevFeed: [Java 27 in IntelliJ IDEA]() Original publisher: [Read original article]() Author: Marit van Dijk Published: 2026-09-15T14:49:02Z Content type: tutorial Language: en Sources: [The JetBrains Blog]() Topics: [IntelliJ IDEA](), [Java](), [JDK 27]() Tags: [intellij-idea](), [java](), [java-27](), [jdk-27](), [news]() ### AI overview A tutorial on using Java 27 with IntelliJ IDEA, including downloading or configuring JDK 27 and setting the project language level. ### Source excerpt In line with the six-month release cadence, Java 27 was released on September 15, 2026. In this blog post, we will look at what's included in this release, how IntelliJ IDEA continues to support the latest Java versions, and even how IntelliJ IDEA is benefiting from some of the changes to the JDK. Java 27 [...] ## Toolbox App 3.8: Improves IDE Update Handling on macOS and Fixes Keyboard Navigation DevFeed: [Toolbox App 3.8: Improves IDE Update Handling on macOS and Fixes Keyboard Navigation]() Original publisher: [Read original article]() Author: Ivan Kuzmin Published: 2026-09-14T16:05:56Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [App](), [ide](), [macOS]() Tags: [cleanup](), [ide](), [jetbrains-toolbox](), [macos](), [navigation](), [shortcuts](), [toolbox-app](), [update]() ### AI overview Toolbox App 3.8 improves IDE update handling on macOS, restores keyboard navigation in project and tool lists, and adds progress reporting and safeguards for cleanup of leftover IDE directories. ### Source excerpt Version 3.8 of the Toolbox App restores keyboard navigation in project and tool lists. On macOS, manual IDE updates stay available even when the system reports the installation directory as protected. IDE updates remain available on macOS macOS was sometimes incorrectly reporting an IDE installation directory as non-writable, causing the Toolbox App to needlessly disable [...] ## Join Us at the Zephyr Project Meetup in Amsterdam DevFeed: [Join Us at the Zephyr Project Meetup in Amsterdam]() Original publisher: [Read original article]() Author: Maria Goldade Published: 2026-09-10T10:37:58Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [Embedded Software Dev](), [Operating system](), [developer tooling](), [migration]() Tags: [community](), [embedded](), [events](), [fuzzing](), [migration](), [news](), [open-source](), [real-time](), [testing]() ### AI overview An invitation to a Zephyr Project meetup in Amsterdam, featuring talks on embedded development, tooling, firmware fuzzing, AI-assisted setup, and migration to Zephyr. ### Source excerpt Register for the Meetup On September 15, the Zephyr community is coming together for an in-person meetup at the JetBrains office in Amsterdam. The Zephyr Project is an open-source collaboration project hosted by the Linux Foundation. Its community brings together developers, users, silicon vendors, device manufacturers, and software companies to build a small, scalable real-time [...] ## Why Rider and ReSharper Were Slow to Start, and How Microsoft Helped Fix the Problem DevFeed: [Why Rider and ReSharper Were Slow to Start, and How Microsoft Helped Fix the Problem]() Original publisher: [Read original article]() Author: Alexander Ulitin Published: 2026-09-09T16:45:27Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [resharper](), [out-of-process](), [Latency](), [Microsoft](), [telemetry]() Tags: [defender](), [logs](), [microsoft](), [net-tools](), [oop](), [out-of-process](), [performance](), [resharper](), [resharper-oop](), [rider](), [telemetry]() ### AI overview The article investigates slow ReSharper startup after its out-of-process architecture was introduced. Profiling identified Microsoft Defender scanning as the source of substantial first-launch latency, and describes a repeatable investigation tool built with input from Microsoft. ### Source excerpt When we launched ReSharper's out-of-process (OOP) architecture, users reported slower startup times for IDEs using ReSharper on Windows. After profiling, the cause surprised us: Microsoft Defender was scanning our process for longer than we expected. This post is about what we found, what we learned working with Microsoft, and a tool we built that allows [...] ## Get Gemini 3.8 Flash With 75% Off DevFeed: [Get Gemini 3.8 Flash With 75% Off]() Original publisher: [Read original article]() Author: Dmitry Savelev Published: 2026-09-09T14:18:17Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [coding](), [Google](), [releases](), [Command-line interface](), [ide]() Tags: [agentic-ai](), [agents](), [benchmark](), [cli](), [coding](), [flash](), [gemini](), [google](), [ide](), [jetbrains-ai](), [junie](), [launch](), [model](), [promotion](), [sales](), [testing]() ### AI overview Gemini 3.8 Flash is now available in Junie's IDE plugin and CLI at a limited-time 75% discount. The article presents it as a coding model for multi-step engineering tasks that explores, tests, and verifies changes before finishing. ### Source excerpt Google's newest coding model, Gemini 3.8 Flash, is tuned for long jobs and comes with an incredible launch discount. Google shipped three Flash releases in six weeks, and the newest one is built for exactly the kind of work Junie does all day: multi-step engineering tasks that take real exploration to get right. Gemini 3.8 [...] ## Join our live webinars: Migrating from Atlassian to YouTrack DevFeed: [Join our live webinars: Migrating from Atlassian to YouTrack]() Original publisher: [Read original article]() Author: Elena Pishkova Published: 2026-09-09T12:51:07Z Content type: news Language: en Sources: [The JetBrains Blog]() Topics: [migration](), [AI Bots]() Tags: [ai-agents](), [atlassian](), [best-practices](), [data-center](), [demo](), [deployment](), [documentation](), [events](), [helpdesk](), [knowledge-base](), [livestreams](), [mcp](), [migration](), [project-management](), [tutorials](), [webinar](), [workflows](), [youtrack](), [youtrack-server]() ### AI overview JetBrains announces live webinars about migrating from Atlassian products to YouTrack. Sessions cover moving projects, users, and data from Jira, Confluence, and Jira Service Management, with migration demos, deployment and pricing information, customer stories, and regional sessions. ### Source excerpt Atlassian is discontinuing sales and support for Data Center products. If you're exploring alternatives, join us for a live session on September 30 to see how Jira-to-YouTrack migration works, including a demo and real customer stories. Register for the worldwide English-language webinar, hosted by the YouTrack team, or attend a regional session in Japanese hosted [...] ## Rust AI in Practice: Building LLM Applications With Rig DevFeed: [Rust AI in Practice: Building LLM Applications With Rig]() Original publisher: [Read original article]() Author: Irina Mihajlovic Published: 2026-09-09T12:02:05Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [Language models](), [Local AI](), [AI-assisted coding]() Tags: [ai](), [ai-agents](), [anthropic](), [applications](), [gemini](), [livestream](), [llm](), [llm-aplications](), [openai](), [rag](), [rust](), [rust-ai](), [rustrover]() ### AI overview The article introduces Rig, a Rust library that provides a unified interface for building LLM applications across providers. It uses a livestream coding-agent demo to explain Rig's provider clients, models, agents, tools, and prompts. ### Source excerpt Rust AI is moving from the experimentation stage toward more practical usage. We recently kicked off a new livestream series with the Rust Foundation to explore how Rust and AI are coming together in real-world applications. In the first session, our Developer Advocate Orhun Parmaksız spoke with Stephen Korzeniewski, Lead Maintainer of Rig at 0xPlaygrounds. [...] ## The Evolution of WSL Support in JetBrains IDEs DevFeed: [The Evolution of WSL Support in JetBrains IDEs]() Original publisher: [Read original article]() Author: Kristina Pchelintseva Published: 2026-09-09T10:39:49Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [IntelliJ IDEA](), [Processes]() Tags: [2026-2](), [architecture](), [debug](), [ecosystem](), [engineering](), [ide](), [idea](), [intellij-idea](), [intellij-platform](), [linux](), [phpstorm](), [remote-development](), [support](), [webstorm](), [windows](), [wsl]() ### AI overview JetBrains describes its evolution of WSL integration and recommends Native mode from version 2026.2. In this mode, supported IDEs remain Windows applications while an agent in WSL handles project files and processes. ### Source excerpt JetBrains IDEs have worked with WSL for many years, and over time, several ways of using it have emerged across our products. Depending on the entry point, the IDE could rely on a different underlying architecture, leading to a different experience. Starting with the 2026.2 release, there is one recommended entry point. In IntelliJ IDEA, [...] ## dotInsights | September 2026 DevFeed: [dotInsights | September 2026]() Original publisher: [Read original article]() Author: Rachel Appel Published: 2026-09-08T14:16:12Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [.NET](), [Software Engineering](), [AI Development](), [ASP.NET Core](), [Uno Platform](), [Model Context Protocol]() Tags: [ai](), [asp-net-core](), [c-sharp](), [community](), [dotinsights](), [mcp](), [net](), [net-11](), [net-tools](), [september-2026](), [uno-platform]() ### AI overview A dotInsights newsletter roundup of recent .NET and software-development articles, with a note about the open-source C# Roslyn compiler and links covering performance, security, AI, web development, architecture, and tooling. ### Source excerpt Did you know? Fun fact: The C# compiler (Roslyn) is open source and written in C#. It exposes APIs to analyze and generate code. Welcome to dotInsights by JetBrains! This newsletter is the home for recent .NET and software development related information. 🔗 Links Here's the latest from the developer community. ☕ Coffee Break Take [...] ## Debug Past an HTTP 403 Without Breaking Spring Security DevFeed: [Debug Past an HTTP 403 Without Breaking Spring Security]() Original publisher: [Read original article]() Author: Andrey Belyaev Published: 2026-09-08T12:34:18Z Content type: tutorial Language: en Sources: [The JetBrains Blog]() Topics: [debug](), [Authorization](), [IntelliJ IDEA](), [ide]() Tags: [debug](), [features](), [http](), [intellij-idea](), [security](), [spring](), [spring-debugger](), [tutorials]() ### AI overview The article explains how IntelliJ IDEA security inlays help debug Spring endpoints blocked by HTTP 403, 401, or login redirects. It covers inspecting runtime role requirements and temporarily unlocking an endpoint for a debug session, with a warning that unlocking affects all clients reaching that URI and method. ### Source excerpt You set a breakpoint inside a Spring MVC controller, or a service, send the request to an HTTP endpoint, and nothing happens. The response is back - and it is a 403 (or 401, or a redirect to a login page). At that point, the bug you were trying to catch is no longer the [...] ## TypeScript 7 in WebStorm: Faster Coding Assistance for Angular and React, No Migration Required DevFeed: [TypeScript 7 in WebStorm: Faster Coding Assistance for Angular and React, No Migration Required]() Original publisher: [Read original article]() Author: Piotr Tomiak Published: 2026-09-08T10:54:49Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [ide](), [coding](), [Go Language](), [Node.js]() Tags: [2026-2](), [angular](), [go](), [node-js](), [performance](), [react](), [typescript](), [vue](), [webstorm]() ### AI overview WebStorm 2026.2 adds stable TypeScript 7 support for Angular and React projects without requiring project migration. Its native integration with TypeScript 7's Go-based engine aims to improve coding-assistance performance, especially in large codebases. ### Source excerpt TypeScript 7 is a real game-changer, and its new Go-based language engine fundamentally alters how IDEs integrate with TypeScript. And what's more, WebStorm 2026.2 ships stable support for it, including for Angular and React projects. No migration is required - if your team is locked on an older TypeScript version for infrastructure reasons, your project [...] ## Kotlin 2.4.20 Released DevFeed: [Kotlin 2.4.20 Released]() Original publisher: [Read original article]() Author: Daniel Csorba Published: 2026-09-07T11:30:57Z Content type: release Language: en Sources: [Kotlin : A concise multiplatform language developed by JetBrains | The JetBrains Blog](), [The JetBrains Blog]() Topics: [releases](), [Command-line interface](), [Android Studio](), [IntelliJ IDEA]() Tags: [android-studio](), [command-line](), [features](), [github](), [gradle](), [intellij](), [issue-tracker](), [kotlin](), [release](), [releases](), [swift](), [testing](), [wasm](), [youtrack]() ### AI overview Kotlin 2.4.20 adds standard-library, compiler, build-tool, Kotlin/Native, Kotlin/Wasm, and Kotlin/JS updates. The article also explains how to update Kotlin in supported IDEs or obtain the command-line compiler. ### Source excerpt The Kotlin 2.4.20 release is out! Here are the main highlights: For the complete list of changes, see What's new in Kotlin 2.4.20 or the release notes on GitHub. How to install Kotlin 2.4.20 The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio. To update to the [...] ## Java Annotated Monthly - September 2026 DevFeed: [Java Annotated Monthly - September 2026]() Original publisher: [Read original article]() Author: Irina Mariasova Published: 2026-09-07T11:27:14Z Content type: article Language: en Sources: [The JetBrains Blog]() Topics: [Programming](), [AI-assisted coding](), [kotlinllm](), [migration]() Tags: [ai](), [ai-coding](), [articles](), [coding](), [java](), [kotlin](), [migration](), [post-quantum](), [september-2026](), [tls]() ### AI overview The September 2026 Java Annotated Monthly surveys Java news, JDK 27 and its performance and security changes, Java tutorials, Kotlin updates, AI-focused development, and developments across languages, frameworks, libraries, and technologies. It highlights compact object headers, G1 as the default garbage collector, protection for sensitive JFR data, post-quantum key exchange in TLS 1.3, Java migration guidance, and selected Kotlin and AI coding resources. ### Source excerpt This month's Java Annotated Monthly brings you the latest Java news, a generous dose of AI-focused articles, Kotlin updates, and highlights from a variety of technologies and frameworks, plus plenty more worth adding to your reading list. Our featured writer, Aicha Laafia, takes a closer look at upcoming JEPs and shares her key findings on [...] ## The Rider 2026.3 Early Access Program Is Open DevFeed: [The Rider 2026.3 Early Access Program Is Open]() Original publisher: [Read original article]() Author: Alexander Kurakin Published: 2026-09-07T09:35:21Z Content type: release Language: en Sources: [The JetBrains Blog]() Topics: [debugging](), [C++]() Tags: [c-plus-plus](), [code-completion](), [debugger](), [debugging](), [eap](), [game-development](), [gamedev](), [net-tools](), [rider](), [test-coverage](), [unreal-engine]() ### AI overview Rider 2026.3's first Early Access build adds rainbow brackets, streamlined data-breakpoint setup, a consolidated game-development plugin category, and code-completion filters. ### Source excerpt The first Early Access build for Rider 2026.3 is now available! It includes rainbow brackets, an easier way to set data breakpoints, a new Game Development plugin category, and filters in code completion. You can get the build from our website or through the Toolbox App. Here's a look at what's new. Rainbow brackets: You [...]