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⇱ Rust-Based Fjall 3.0 Released For Key-Value Storage Engine Akin To RocksDB - Phoronix


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Rust-Based Fjall 3.0 Released For Key-Value Storage Engine Akin To RocksDB

Written by Michael Larabel in Programming on 3 January 2026 at 08:19 PM EST. 13 Comments
In addition to the release of Stoolap 0.2 as a modern embedded SQL database written in Rust, Fjall 3.0 is available as another Rust-written database solution. Fjall is a log-structured, embedable key-value storage engine akin to RocksDB but with the benefit of being written in Rust. With Fjall 3.0 its performance is now very competitive.

With Fjall 3.0 released on Friday it's described under the belief that it's "the most capable Rust-based storage engine out there." Fjall 3.0 updates its block format and brings a wide variety of other enhancements to this key-value storage engine from new APIs to greater data checksumming. Large values will also now be compressed by default when written to the journal. Fjall is also now making use of the zlib-rs code.

👁 Fjall 3.0 benchmark


Fjall 3.0 performance is looking very good in a variety of benchmarks shown in the release announcement.

Those wanting to try out this Apache 2.0 and MIT licensed Rust storage engine can find the code on GitHub.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.