--- title: DuckDB 2.0 coming this fall with client/server mode description: DuckDB 2.0, expected this fall, will introduce a client/server mode built on the previously experimental quack extension, letting DuckDB serve multiple clients... canonical: https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: DuckDB 2.0 coming this fall with client/server mode | daily.dev og:description: DuckDB 2.0, expected this fall, will introduce a client/server mode built on the previously experimental quack extension, letting DuckDB serve multiple clients... og:url: https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt og:image: https://api.daily.dev/og/posts/FFur8q0yt.png og:image:alt: DuckDB 2.0 coming this fall with client/server mode og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # DuckDB 2.0 coming this fall with client/server mode **[InfoWorld](https://daily.dev/sources/infoworld)** · 2 min read · 0 upvotes · 0 comments ## Summary DuckDB 2.0, expected this fall, will introduce a client/server mode built on the previously experimental quack extension, letting DuckDB serve multiple clients instead of only running in-process for one. The release also brings asynchronous I/O separating query processing from the I/O layer for speedups up to 40x, a new storage format for faster reads on wide tables and large indexes, a rewritten SQL parser with better error messages and extensible syntax, and a stable C API letting extensions compile from a single header without needing recompilation for future releases. Nightly preview builds are already available, though no release candidate date has been set. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What new features does DuckDB 2.0 add? DuckDB 2.0 adds a client/server mode built on the quack extension, allowing DuckDB to serve multiple clients instead of only running in-process for one. It also introduces asynchronous I/O that separates the I/O layer from query processing for speedups up to 40x, a new storage format for faster reads on wide tables and large indexes, a rewritten SQL parser, and a stable C API for extensions. _daily.dev helps developers track major database releases like DuckDB 2.0 before planning an upgrade._ ### Does DuckDB support a client/server mode like PostgreSQL? Yes, starting with DuckDB 2.0, the previously experimental quack extension is promoted to a stable release, enabling a client/server mode so DuckDB can act as a service for multiple clients rather than only an in-process database for a single client. The quack extension also lets DuckDB remotely query other databases such as PostgreSQL and MySQL. _Developers comparing embedded and server databases follow updates like this one on daily.dev._ ### Will DuckDB extensions need to be recompiled for every new release? No, with DuckDB 2.0's new stable C API, extensions can be compiled from a single header file and won't need recompiling to work with future releases. Previously, extensions were written against an unstable C++ API and required recompilation for each new DuckDB version. _daily.dev keeps extension authors informed on API stability changes before they break a build._ ## Similar posts on daily.dev - [Giving DuckDB a Server With Quack](https://daily.dev/posts/giving-duckdb-a-server-with-quack-p5doobzc2) · Medium · 1 upvotes · 0 comments - [DuckDB Ecosystem: November 2025](https://daily.dev/posts/duckdb-ecosystem-november-2025-rqofhhubf) · MotherDuck · 0 upvotes · 0 comments - [DuckDB Quack: Client/Server Protocol over HTTP for Multi-User Analytics](https://daily.dev/posts/duckdb-quack-client-server-protocol-over-http-for-multi-user-analytics-kclxrezzv) · InfoQ · 1 upvotes · 0 comments --- Tags: [#backend](https://daily.dev/tags/backend), [#sql](https://daily.dev/tags/sql), [#duckdb](https://daily.dev/tags/duckdb) [View this post on daily.dev](https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"DuckDB 2.0 coming this fall with client/server mode","url":"https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt"},"datePublished":"2026-08-18T18:40:11.212Z","dateModified":"2026-08-25T06:22:06.504Z","description":"DuckDB 2.0, expected this fall, will introduce a client/server mode built on the previously experimental quack extension, letting DuckDB serve multiple clients...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/96e9998e92f91bcf85d89abd32ba9f01?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/96e9998e92f91bcf85d89abd32ba9f01?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"InfoWorld","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"InfoWorld","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/bf6d68a999064029b0bb09aa6268f1f3","url":"https://daily.dev/sources/infoworld"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"backend,sql,duckdb","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"InfoWorld","item":"https://daily.dev/sources/infoworld"},{"@type":"ListItem","position":3,"name":"DuckDB 2.0 coming this fall with client/server mode"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/duckdb-2-0-coming-this-fall-with-client-server-mode-ffur8q0yt#faq","mainEntity":[{"@type":"Question","name":"What new features does DuckDB 2.0 add?","acceptedAnswer":{"@type":"Answer","text":"DuckDB 2.0 adds a client/server mode built on the quack extension, allowing DuckDB to serve multiple clients instead of only running in-process for one. It also introduces asynchronous I/O that separates the I/O layer from query processing for speedups up to 40x, a new storage format for faster reads on wide tables and large indexes, a rewritten SQL parser, and a stable C API for extensions. daily.dev helps developers track major database releases like DuckDB 2.0 before planning an upgrade."}},{"@type":"Question","name":"Does DuckDB support a client/server mode like PostgreSQL?","acceptedAnswer":{"@type":"Answer","text":"Yes, starting with DuckDB 2.0, the previously experimental quack extension is promoted to a stable release, enabling a client/server mode so DuckDB can act as a service for multiple clients rather than only an in-process database for a single client. The quack extension also lets DuckDB remotely query other databases such as PostgreSQL and MySQL. Developers comparing embedded and server databases follow updates like this one on daily.dev."}},{"@type":"Question","name":"Will DuckDB extensions need to be recompiled for every new release?","acceptedAnswer":{"@type":"Answer","text":"No, with DuckDB 2.0's new stable C API, extensions can be compiled from a single header file and won't need recompiling to work with future releases. Previously, extensions were written against an unstable C++ API and required recompilation for each new DuckDB version. daily.dev keeps extension authors informed on API stability changes before they break a build."}}]} ```