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fjall

v3.1.2 Stable

Log-structured, embeddable key-value storage engine

MIT OR Apache-2.0 Edition 2021 MSRV 1.90.0
AlgorithmsData structuresDatabase implementations #database#leveldb#key-value#rocksdb#lsm

Quick Verdict

  • โœ“Actively maintained (updated 9d ago)
  • โœ“Stable API (3.x for 2+ years)
  • โœ“Trusted by 746 crates
  • โœ“Permissive license (MIT OR Apache-2.0)
  • !42% of releases were yanked

Security

Checking security advisories...
Downloads
626.8K
Dependents
746
Releases
92
Size
82KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

253.1K downloads in the last 30 days (8.4K/day), up 183% from the previous period.

๐Ÿ”—
Moderate adoption

746 crates depend on fjall. Reasonable ecosystem adoption, though not yet a core dependency.

โœ…
Stable for 2+ years

The API has been stable (1.x) for over 2 years with 92 releases. This level of maturity means you can depend on it without worrying about breaking changes.

โš ๏ธ
Notable yanked versions

42% of releases have been yanked. Check version history before pinning.

๐ŸŒŸ
Used by top crates

Notable dependents include pict-rs, armour, brk_indexer, brk_core, rapira. When high-quality crates choose fjall, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 14/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 7/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
4K/day avg+288%
05K10K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v3.0.2
39%
v2.11.2
36%
v3.0.1
12%
v2.11.1
6%
v2.10.0
6%

Release Timeline

92 releases39 yankedsince 2023
J
F
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A
M
J
J
A
S
O
N
D
2023
1
2024
47
2025
36
2026
8
Less
More|
Yanked

Feature Flags

default =["lz4"]

lz4*bytes_1metrics__internal_whitebox

README

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Maintainers

Dependencies
12
direct dependencies
Dependents
746
crates depend on fjall

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