ANanarki8·Feb 22, 2025
redb is what are you looking for
https://github.com/cberner/redb
In Build your own SQLite in Rust, Part 5: Evaluating queriescberner
redb
Rust2022–2025
cberner / redb
redb
An embedded key-value database in pure Rust
4Distinct people
5Mentions
0Explicit recommenders
5KGitHub stars
What to know before exploring
What it is
An embedded key-value database in pure Rust
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year5 dated mentions
Observed mentions: 2022-04-29 21:00:28 UTC to 2025-02-22 13:39:19 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 2 | 1 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
5 sourcesI wrote redb (https://github.com/cberner/redb) using mmap, initially. However, I later removed it and switched to read()/write() with my own user space cache. I'm sure it's not as good as the OS page cache, but the difference was only 1.2-1.5x performance on the benchmarks I cared about, and the cache is less than 500 lines of code.
Also, by removing mmap() I was able to remove all the unsafe code associated with it, so now redb is memory-safe.
In Are you sure you want to use MMAP in your DBMS?Redb (pure Rust embedded db) now 50% more efficient
1 points · Open discussionThanks for the benchmarks versus lmdb & sled[1]. That answers a ton of my "why?" questions. Individual writes are about the same but most other benchmarks are ~2x+!
Chris also has a distributed fs in progress, in very very early alpha. Yay for the awesome hackers! https://github.com/fleetfs/fleetfs
[1] https://github.com/cberner/redb#benchmarks
In Redb – An embedded key-value database in pure rustRedb – An embedded key-value database in pure rust
4 points · Open discussion