Alex Shapalov introduces PGX, a Rust runtime for thousands of Postgres databases

AIAlex Shapalov announces PGX, an open-source Rust runtime that runs thousands of Postgres databases in one process. He says 1,000 idle databases use 659 MB of RAM, an idle database uses about 0.7 MB, and a 674 MB database clones in 85 ms.

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The post gives concrete memory and clone-time figures for running many Postgres databases per runtime, useful for judging its fit for agent workloads.

alex shapalov

@alxshp

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🚨Introducing a new database: PGX 🐘

Postgres for AI agents. In Rust. http://pgx.dev

One runtime. Thousands of Postgres databases.

⚡ Up to 100× less idle memory
⚡ 1,000 databases in just 659 MB RAM
⚡ Clone a 674 MB database in 85 ms
⚡ ~0.7 MB per idle database

RUST. OPEN SOURCE. FREE.

No containers per database.
No heavyweight instances.
No production baggage.

Real Postgres. Built to be disposable.

https://x.com/alxshp/status/2110049413070831817

alex shapalov@alxshp

Introducing PGSync 🐘 Real-time PostgreSQL replication. FREE. OSS Built in Rust. 🦀 Postgres 16 / 17 / 18. No extensions. No triggers. No complex setup. → snapshot → replicate → stream changes → track WAL → recover from crashes → resume automatically → keep databases in sync ~15 MB RAM during streaming. Built for developers. Built for AI agents. Open source. https://x.com/alxshp/status/2107879013641560218

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alex shapalov · x.comPublished Oct 20, 12:21 PM ET · added here 1:54 PM ET

Original title: 🚨Introducing a new database: PGX 🐘

Alex Shapalov introduces PGX, a Rust runtime for thousands of Postgres databases

AIWhy it matters.

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