DoW — Connected DuckDB 0.3.0

Connect your apps to DuckDB with standard PostgreSQL drivers, or use native Quack. This release includes verified TLS, SCRAM accounts, read/write access rules and the read-only Neon postgres_fdw tutorial.

Explore tables and run real queries with the included Flask playground. It reuses authenticated connections and keeps them ready between visits. A runnable top-prices query shows how to get the same results with less work.

The same source commit passed 106 native/bootstrap checks, the actual FDW SQL tutorial, stock-driver examples, concurrent workloads and Docker tests on AMD64 and ARM64. Checksums and source pins are included.

The native binary is for Ubuntu 24.04 on x86-64-v3 CPUs. For ARM64, use Docker or build from the included source. Queries run in DuckDB; full PostgreSQL SQL/catalog/ORM compatibility is not promised.

DuckOnWire 0.2.0-rc.5

DuckOnWire 0.2.0-rc.5

DuckDB on the server. Your usual database driver on the client.

One native C++ owner shares a persistent database through ordinary PostgreSQL drivers or paired Quack protocol 7. PostgreSQL clients leave DuckDB installations unchanged. HTTPFS and Quack are built in.

Protected access supports verified TLS, SCRAM-SHA-256 and username/password accounts with database-wide read/write permissions. Local mode uses a shared password. Connection tutorials, ten language examples, AGENTS.md and the public Argentina/Spain product demo with synthetic prices are included.

Ten PostgreSQL languages passed on macOS; C/Python/Node passed on Linux. See the executable tutorial and native Linux qualification.

Node pg, actual client VALUES, four writers and four read-only readers:

Platform	Client rows	Commits	Rows/s	Mean mixed reads
Apple M1 Pro	2,000,000	2,000	313,781	5.24 ms
Ubuntu GitHub Actions	100,000	100	25,831	46.57 ms

Each batch sends 1,000 three-integer rows over loopback TLS; timing includes client construction, transport and confirmed commits, excluding authentication/setup/final checks. Exact checksums and complex results passed in-session. Different hardware and row counts prevent direct comparison; no WAN guarantees.

Experimental MIT prerelease: macOS ARM64 and Linux x86-64-v3 (Ubuntu 24.04/glibc 2.39); Windows server unqualified. Supported PostgreSQL protocol/types do not imply complete PostgreSQL catalogs, roles, ORM or COPY compatibility.

Español

Servidor C++ con login normal de usuario y contraseña: drivers PostgreSQL sin cambiar DuckDB en el cliente, o Quack con motor compatible. TLS/SCRAM y permisos de lectura/escritura por base. macOS validó diez lenguajes; Linux, C/Python/Node. Las medidas usan cuatro escritores y cuatro lectores de sólo lectura; son cargas y equipos distintos, con el alcance temporal indicado arriba.

中文

原生 C++ 服务器共享 DuckDB；标准 PostgreSQL 驱动无需更换客户端 DuckDB，支持 TLS/SCRAM 和数据库读写账户。macOS 实测十种语言，Linux 实测 C/Python/Node；上表是不同硬件和数据量的实际客户端传输结果，不能直接比较。

DuckOnWire 0.2.0-rc.4 — native DuckDB and Quack

DuckOnWire provides native DuckDB read/write access from multiple processes through a C++ owner server and Quack CONNECT. HTTPFS and Quack are built in; clients use genuine DuckDB connections, typed prepared statements and independent transactions.

This is an experimental prerelease based on DuckDB v2.1.0-dev0 and Quack protocol 7.

• DuckOnWire source commit: adf8b5997b8af5bc499fea9ae7efa6b73f55ea96.
• DuckDB fork: 848126236a4a8879f232bed7ab5f702683a55300.
• Quack fork: a6e7cb9243ee3d7ec0e5371b720be3292a32061f.
• Source archive and native C/C++ bundles for macOS ARM64 and Ubuntu 24.04 Linux x86-64-v3, with manifests and SHA-256 checksums. The other eight language bindings require separate pairing.
• Public demo: 46,462 products from Argentina and Spain, manufacturer brands, synthetic prices, and no retailer/private-label data.
• Own code is MIT licensed. Third-party notices are included.

Fresh qualification passed on both platforms: native21, transaction flow14, bootstrap17, installed-package acceptance, and independent archive/source/hash/privacy review. Each benchmark mode inserted 2,000,000 rows in 80 committed batches with four writers and four readers; every reader made progress during writes, and counts/checksums persisted after reopening. Reads include joins, aggregation and latest-price window queries.

Platform	Mode	Insert rows/s	Mean mixed read latency
macOS 26 ARM64	Embedded	1,477,519	28.49 ms
macOS 26 ARM64	Quack loopback	1,500,866	29.10 ms
Ubuntu 24.04 x86-64-v3	Embedded	1,249,418	33.06 ms
Ubuntu 24.04 x86-64-v3	Quack loopback	854,892	49.10 ms

These measurements use typed prepared INSERT SELECT range batches and loopback networking. They are hardware-dependent observations; per-row INSERT throughput and WAN latency are not measured. Complete query latencies, hardware and persistence checks are in benchmark-macos.json and benchmark-linux.json. Historical ten-language results remain separate from this fresh C/C++ package qualification.

The Linux bundle requires x86-64-v3, glibc 2.39, libcurl 4 and OpenSSL 3 (qualified on Ubuntu 24.04). The macOS bundle was qualified on macOS 26 ARM64.

Read the single multilingual README for build instructions, CRUD, transactions and driver limits. Match package commits and hashes with release.json and the CI run.

Español: prerelease experimental con servidor C++ nativo, extensiones integradas y transacciones independientes. Los paquetes nativos incluyen C/C++; los demás bindings se compilan por separado. El catálogo público sólo cubre Argentina y España y usa precios ficticios.

中文：实验性预发布版本，提供原生 C++ 服务器、内置扩展和独立事务；公开商品来自阿根廷和西班牙，价格为合成数据。