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scc

v3.6.12 Stable

A collection of high-performance asynchronous/concurrent containers with both asynchronous and synchronous interfaces

Apache-2.0 Edition 2024 MSRV 1.85.0
AsynchronousCachingConcurrencyData structures #tree#concurrent#async#cache#hashmap

Quick Verdict

  • โœ“Actively maintained (updated 3d ago)
  • โœ“Stable API (3.x for 5+ years)
  • โœ“Massive adoption (1.1K crates depend on it)
  • โœ“Permissive license (Apache-2.0)
  • !83% of releases were yanked

Security

Checking security advisories...
Downloads
53.8M
Dependents
1.1K
Releases
241
Size
140KB

Deep Insights

๐Ÿ“Š
Steady growth

6.4M downloads in the last 30 days (211.7K/day), up 18% from the previous period.

๐Ÿ”—
Widely adopted

1.1K crates depend on scc. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

scc has only 1 owner despite 1.1K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

โœ…
Stable for 5+ years

The API has been stable (1.x) for over 5 years with 241 releases. This level of maturity means you can depend on it without worrying about breaking changes.

โš ๏ธ
Notable yanked versions

83% of releases have been yanked. Check version history before pinning.

๐ŸŒŸ
Used by top crates

Notable dependents include serial_test, zeromq, proto_core, starbase_utils, warpgate. When high-quality crates choose scc, it's a strong quality signal.

Health Breakdown

Maintenance 19/25

Recency, release consistency, active ratio

Quality 12/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
175K/day avg+53%
0100K200K300K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v2.4.0
44%
v2.3.4
31%
v2.3.3
24%
v3.4.8
0%
v3.3.3
0%

Release Timeline

241 releases200 yankedsince 2020
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F
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A
M
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J
A
S
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N
D
2020
24
2021
35
2022
39
2023
41
2024
40
2025
34
2026
28
Less
More|
Yanked

Feature Flags

loom

README

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Maintainers

Dependencies
12
direct dependencies
Dependents
1.1K
crates depend on scc

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