VennDB by plabayo
in memory Rust database to query your data like a Venn diagram
About VennDB
From the project's README at github.com/plabayo/venndb. Lightly cleaned for readability; for the full source see the upstream repo.
An append-only in-memory database in Rust for rows queried using bit (flag) columns. This database is designed for a very specific use case where you have mostly static data that you typically load at startup and have to query constantly using very simple filters. Datasets like these can be large and should be both fast and compact.
For the limited usecases where can be applied to, it has less dependencies and is faster then traditional choices, such as a naive implementation or a more heavy lifted dependency such as Sqlite.
This project was developed originally in function of [](https://ramaproxy.org), where you can see it being used for example to provide an in-memory (upstream) proxy database. Do let us know in case you use it as well in your project, such that we can assemble a showcase list.
[![Crates.io][crates-badge]][crates-url] [![Docs.rs][docs-badge]][docs-url] [![MIT License][license-mit-badge]][license-mit-url] [![Apache 2.0 License][license-apache-badge]][license-apache-url] [![rust version][rust-version-badge]][rust-version-url] [![Build Status][actions-badge]][actions-url]
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 134 | github.com/plabayo/venndb |
| GitHub forks | 4 | github.com/plabayo/venndb |
| CRATES downloads (last month) | 39k | venndb |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 3.3 years | since Mar 2023 |
| Last commit | 7 months ago | Nov 18, 2025 |
| Releases shipped | 9 | last: 7 months ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 1 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Ready to self-host VennDB?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed Jun 21, 2026.
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