> For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /blog/index.md.

# Rspack blogs

Browse release notes, ecosystem updates, and technical deep dives from the Rspack team [@rspack\_dev](https://x.com/rspack_dev).

## [Announcing Rspack 2.1](/blog/announcing-2-1)

> June 26, 2026 · Gengkun He, Yu Feng, Congcong Pan, Jiahan Chen, Zhiyong Chen, Zhixin Jin, Chenwei Dai, Lingyu Wang

Rspack 2.1 is now available, featuring support for the Rust version of React Compiler, import.meta.glob, Source Phase Imports, persistent cache cleanup, and multiple performance and output optimizations.

## [Announcing Rspack 2.0](/blog/announcing-2-0)

> April 22, 2026 · Rspack Team

Rspack 2.0 is out! It introduces more modern defaults, API design, and build outputs while remaining compatible with the webpack ecosystem.

## [Announcing Rspack 1.7](/blog/announcing-1-7)

> December 31, 2025 · Rspack Team

Rspack 1.7 has been released, improving SWC Wasm plugin compatibility, importing assets as bytes, and stabilizing multiple experimental features.

## [Announcing Rspack 1.6](/blog/announcing-1-6)

> October 30, 2025 · Rspack Team

Rspack 1.6 has been released with better ESM output, enhanced tree shaking, support for the import defer syntax, stabilized layers feature, and default barrel file optimization.

## [Announcing Rspack 1.5](/blog/announcing-1-5)

> August 26, 2025 · Rspack Team

Rspack 1.5 has been released, introducing barrel file optimization and constant inlining optimization, also adding a built-in file system watcher, a virtual modules plugin, and a Rust extension mechanism, while dropping support for Node.js 16.

## [Bundler tree shaking principles and differences](https://github.com/orgs/web-infra-dev/discussions/29)

> July 31, 2025 · ahabhgk

Tree shaking has become an essential part of modern front-end bundling. This article provides a brief overview of tree shaking principles across different bundlers and explores their key differences.

## [How to embed a HashMap with lots of strings in program](https://github.com/orgs/web-infra-dev/discussions/27)

> July 2, 2025 · quininer

This article introduces techniques for constructing a completely static and efficient Map using MPHF and string packing, avoiding initialization, parsing, and memory allocation while improving binary size and compile speed.

## [Announcing Rspack 1.4](/blog/announcing-1-4)

> June 26, 2025 · Rspack Team

Rspack 1.4 has been released with support for running in the browser, incremental builds enabled by default, faster SWC, smaller bundles, and new features including the `CssChunkingPlugin`.

## [Rspack joins the Next.js ecosystem](/blog/rspack-next-partner)

> April 10, 2025 · Rspack Team

Today, we’re excited to introduce next-rspack, a community-driven plugin bringing direct Rspack support to Next.js. This integration offers a fast, webpack-compatible alternative for teams not yet ready to adopt Turbopack.

## [Announcing Rspack 1.3](/blog/announcing-1-3)

> March 28, 2025 · Rspack Team

Rspack 1.3 has been released with support for detecting circular dependencies, building HTTP imports, and referencing AMD modules. It introduces a new lazy compilation middleware, while also improving code splitting performance, output bundle size, and memory usage.

## [Announcing Rspack 1.2](/blog/announcing-1-2)

> January 21, 2025 · jerrykingxyz, chenjiahan, JSerFeng, ahabhgk

Rspack 1.2 has been released, introducing experimental persistent caching, a faster code splitting algorithm, and Yarn PnP support.

## [Build systems and bundlers](https://github.com/orgs/web-infra-dev/discussions/24)

> January 7, 2025 · ahabhgk

This article will briefly introduce the content of the "Build Systems à la Carte: Theory and Practice" paper and attempt to summarize bundlers from the perspective of build systems.

## [RSC and Server Action bundle practice](https://github.com/orgs/web-infra-dev/discussions/23)

> January 6, 2025 · ahabhgk

This article introduces the construction practices of RSC (React Server Components) and Server Action in React, including their concepts, rendering methods, bundling process in webpack, and how Turbopack bundles multiple environment modules in a module diagram.

## [Announcing Rspack 1.1](/blog/announcing-1-1)

> November 7, 2024 · LingyuCoder, ahabhgk, GiveMe-A-Name, 9aoy, chenjiahan

Rspack and Rsbuild 1.1 has been released, significantly improve the performance of cold starts and incremental builds. It also improve the built-in HTML plugin and types of configuration options.

## [Announcing Rspack 1.0](/blog/announcing-1-0)

> August 28, 2024 · Rspack Team

Today Rspack has reached a new milestone - 1.0. This means that Rspack is production-ready, covers most of webpack's APIs and features, and is now prepared to support more users.

## [Announcing Rspack 1.0 alpha](/blog/announcing-1-0-alpha)

> June 29, 2024 · Rspack Team

Rspack 1.0 alpha is now available on npm! Before releasing Rspack 1.0 stable version, we will test for 1~2 months to improve the API stability and reliability of v1.0 and to verify its impact on downstream projects.

## [Announcing Rspack 0.7](/blog/announcing-0-7)

> May 28, 2024 · Rspack Team

Rspack 0.7 has been released, featuring support for lazy compilation, which can significantly improve the dev startup performance of large applications. It also introduces a brand-new css-module-lexer, increasing CSS bundling speed by 4 times.

## [Deep dive into Rspack tree shaking](https://github.com/orgs/web-infra-dev/discussions/17)

> April 17, 2024 · hardfist

This article primarily focuses on understanding the concept of Rspack & webpack tree shaking.

## [Announcing Rspack 0.6](/blog/announcing-0-6)

> April 10, 2024 · Rspack Team

Rspack 0.6 is out, with built-in support for mini-css-extract-plugin and new tree-shaking enabled by default.

## [Webpack chunk graph algorithm](https://github.com/orgs/web-infra-dev/discussions/15)

> January 12, 2024 · JSerFeng

This article introduces the chunk strategy of webpack. Through this article, you can understand when a chunk will be generated in the code and how to reduce the chunk size, etc.

## [Announcing Rspack 0.5](/blog/announcing-0-5)

> January 9, 2024 · Rspack Team

Rspack 0.5 is out, supporting Module Federation and removing the default SWC transformation.

## [Module Federation added to Rspack](/blog/module-federation-added-to-rspack)

> January 9, 2024 · Rspack Team

The latest Rspack 0.5.0 introduces the highly anticipated Module Federation, which is detailed in this article.

## [Webpack CSS order issue](https://github.com/orgs/web-infra-dev/discussions/12)

> November 29, 2023 · JSerFeng

This article shows how the CSS order problem occurs in webpack and how to solve it.

## [Announcing Rspack 0.4](/blog/announcing-0-4)

> November 22, 2023 · Rspack Team

Rspack 0.4 is out, removing support for some builtin features.

## [Deep dive into Top-level await](https://github.com/orgs/web-infra-dev/discussions/9)

> October 26, 2023 · ulivz

In this article, we will take a closer look at aspects such as the specification, toolchain support, webpack runtime, and profiling of Top-level await.

## [Design trade-offs in bundler](https://github.com/orgs/web-infra-dev/discussions/1)

> August 30, 2023 · hardfist

This article explains why we decided to develop Rspack and what trade-offs we made during the design process.

## [Announcing Rspack 0.3](/blog/announcing-0-3)

> August 24, 2023 · Rspack Team

Rspack 0.3 is out, adding support for web workers and the builtin:swc-loader.

## [Announcing Rspack 0.2](/blog/announcing-0-2)

> June 2, 2023 · Rspack Team

Rspack 0.2 is out, introducing many new features, such as support for realContentHash, DataURI, and the ESM format, and more.

## [Announcing Rspack 0.1](/blog/announcing-0-1)

> March 6, 2023 · Rspack Team

Rspack has officially been released!