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dashmap

v6.2.1 Stable

Blazing fast concurrent HashMap for Rust.

MIT Edition 2018 MSRV 1.65
AlgorithmsConcurrencyData structures #concurrent#hashmap#atomic

Quick Verdict

  • βœ“Actively maintained (updated 8d ago)
  • βœ“Stable API (6.x for 6+ years)
  • βœ“Massive adoption (55.7K crates depend on it)
  • βœ“Permissive license (MIT)

Security

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Downloads
275.0M
Dependents
55.7K
Releases
85
Size
27KB

Deep Insights

πŸ“Š
Steady growth

21.0M downloads in the last 30 days (700.8K/day), up 16% from the previous period.

πŸ›οΈ
Foundational crate

55.7K crates depend on dashmap β€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

⚠️
Single maintainer risk

dashmap has only 1 owner despite 55.7K dependents. This is a bus-factor concern β€” consider the implications for long-term support.

βœ…
Stable for 6+ years

The API has been stable (1.x) for over 6 years with 85 releases. This level of maturity means you can depend on it without worrying about breaking changes.

πŸ“
Compact crate

At 26KB, dashmap is lightweight. Small crate size correlates with focused, well-scoped functionality.

⚠️
Notable yanked versions

14% of releases have been yanked. Check version history before pinning.

🌟
Used by top crates

Notable dependents include governor, gix-tempfile, inferno, prodash, datafusion. When high-quality crates choose dashmap, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 16/25

Yanked ratio, deps, size, maturity, features

Community 15/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 14/15

Docs, repo, license, metadata

Download Trend

Daily downloads Β· last 90 days
635K/day avg+16%
0200K400K600K800K1.0M2/263/164/34/215/95/26

Top Dependents

Version Adoption

v6.1.0
50%
v5.5.3
48%
v6.0.1
1%
v7.0.0-rc2
0%
v6.2.1
0%

Release Timeline

10 releases1 yankedsince 2023
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2023
2
2024
4
2025
3
2026
1
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Yanked

Feature Flags

inlineraw-apitypesize

README

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Maintainers

Dependencies
10
direct dependencies
Dependents
55.7K
crates depend on dashmap

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