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Crates / Compare / dashmap vs papaya

Rust crates · head to head · data Oct 24, 2026

dashmap vs papaya

Short answerBy steady daily use, dashmap runs at 1,112,131 downloads on a quiet day against 67,338 for papaya (16.5x), and 4,694 crates depend on dashmap against 103. Pick dashmap if you want the most widely used concurrent map with a familiar API. Pick papaya if you have read-heavy workloads or async code and want a lock-free map with no lock held across .await.

Bottom line: dashmap is the default; papaya is worth a benchmark for read-heavy and async use.

1.1Mdashmap quiet-day downloads/day
67.3Kpapaya quiet-day downloads/day
4,694crates depend on dashmap
103crates depend on papaya

Side by side

dashmappapaya
Quiet-day baseline (downloads/day)1,112,13167,338
Downloads in the window96,707,5196,755,492
Share within 2 days of a release0%2%
Baseline trend (first 30 vs last 30 days)+26%+81%
Reverse dependencies4,694103
All-time downloads423M14.1M
Releases in the window01
Latest version6.2.10.2.5
Latest releaseMay 17, 2026Aug 21, 2026
MSRV (latest)1.651.72.0
LicenseMITMIT
First publishedAug 25, 2019Nov 10, 2021

dashmap: daily downloads

1M2026-07-27: 989,8122026-07-28: 1,112,1312026-07-29: 1,083,3932026-07-30: 1,079,6772026-07-31: 1,006,5712026-08-01: 617,9222026-08-02: 560,0862026-08-03: 998,4422026-08-04: 1,104,3262026-08-05: 1,088,6212026-08-06: 936,3572026-08-07: 1,052,0072026-08-08: 574,2412026-08-09: 534,6792026-08-10: 979,2822026-08-11: 1,070,5752026-08-12: 1,087,0192026-08-13: 1,137,4872026-08-14: 1,052,3722026-08-15: 611,2872026-08-16: 608,3282026-08-17: 976,0072026-08-18: 1,096,7462026-08-19: 1,069,4652026-08-20: 1,179,1362026-08-21: 1,115,1632026-08-22: 665,3072026-08-23: 643,5012026-08-24: 1,089,8952026-08-25: 1,153,9742026-08-26: 1,182,5312026-08-27: 1,218,8312026-08-28: 1,278,3202026-08-29: 660,9522026-08-30: 589,9112026-08-31: 1,082,8902026-09-01: 1,284,3672026-09-02: 1,305,3912026-09-03: 1,258,3092026-09-04: 1,142,6902026-09-05: 725,9262026-09-06: 661,5942026-09-07: 937,6782026-09-08: 1,172,0312026-09-09: 1,249,6852026-09-10: 1,238,2662026-09-11: 1,108,3612026-09-12: 649,0972026-09-13: 599,2352026-09-14: 1,193,5732026-09-15: 1,344,3252026-09-16: 1,216,7762026-09-17: 1,319,5082026-09-18: 1,203,2752026-09-19: 678,2892026-09-20: 688,9232026-09-21: 1,152,7362026-09-22: 1,277,9182026-09-23: 1,349,2552026-09-24: 1,273,2622026-09-25: 1,208,9142026-09-26: 715,8232026-09-27: 715,6532026-09-28: 1,312,7802026-09-29: 1,399,7492026-09-30: 1,341,3522026-10-01: 1,379,9512026-10-02: 1,293,0282026-10-03: 744,2542026-10-04: 679,1382026-10-05: 1,205,9242026-10-06: 1,408,5222026-10-07: 1,464,6392026-10-08: 1,426,2642026-10-09: 1,307,2062026-10-10: 861,9782026-10-11: 749,8122026-10-12: 1,210,0452026-10-13: 1,485,7452026-10-14: 1,563,4092026-10-15: 1,483,6652026-10-16: 1,370,7572026-10-17: 805,3972026-10-18: 722,0142026-10-19: 1,403,9672026-10-20: 1,564,8552026-10-21: 1,844,2872026-10-22: 1,957,8312026-10-23: 1,762,846Jul 27Aug 1Sep 1Oct 1

papaya: daily downloads

1K2026-07-27: 43,2052026-07-28: 58,3562026-07-29: 67,4772026-07-30: 65,1082026-07-31: 57,9582026-08-01: 45,6872026-08-02: 36,4462026-08-03: 56,3322026-08-04: 54,2612026-08-05: 61,5762026-08-06: 55,2712026-08-07: 62,1822026-08-08: 37,7482026-08-09: 31,1142026-08-10: 67,3382026-08-11: 80,1002026-08-12: 71,0152026-08-13: 67,1772026-08-14: 65,0922026-08-15: 39,4912026-08-16: 36,9702026-08-17: 56,5422026-08-18: 62,3062026-08-19: 60,5862026-08-20: 66,0092026-08-21: 66,968 (release window)2026-08-22: 47,688 (release window)2026-08-23: 47,5492026-08-24: 73,2772026-08-25: 79,9672026-08-26: 63,8542026-08-27: 65,5822026-08-28: 62,5332026-08-29: 46,0472026-08-30: 36,7342026-08-31: 57,0772026-09-01: 73,2812026-09-02: 76,3172026-09-03: 72,0802026-09-04: 64,7322026-09-05: 43,2272026-09-06: 37,9172026-09-07: 58,5382026-09-08: 69,3202026-09-09: 79,2732026-09-10: 91,8182026-09-11: 99,1382026-09-12: 85,4832026-09-13: 47,4412026-09-14: 82,8102026-09-15: 103,9182026-09-16: 105,5442026-09-17: 128,6012026-09-18: 97,9492026-09-19: 54,7612026-09-20: 50,4272026-09-21: 85,6082026-09-22: 106,3182026-09-23: 111,8872026-09-24: 106,9712026-09-25: 107,8202026-09-26: 65,0832026-09-27: 55,8712026-09-28: 97,4412026-09-29: 108,4202026-09-30: 114,5882026-10-01: 111,9192026-10-02: 107,7992026-10-03: 57,3752026-10-04: 52,3172026-10-05: 89,9952026-10-06: 122,9882026-10-07: 112,6212026-10-08: 106,9732026-10-09: 107,1182026-10-10: 58,1982026-10-11: 52,0222026-10-12: 109,6382026-10-13: 116,4712026-10-14: 122,3172026-10-15: 109,4502026-10-16: 100,5702026-10-17: 49,2932026-10-18: 48,4372026-10-19: 109,1312026-10-20: 119,6972026-10-21: 117,7522026-10-22: 124,9392026-10-23: 113,267Jul 27Aug 1Sep 1Oct 1

release windowquiet dayquiet-day median

Which to pick

  • dashmap if you want the most widely used concurrent map with a familiar API.
  • papaya if you have read-heavy workloads or async code and want a lock-free map with no lock held across .await.

Downloads are not quality. The quiet-day baseline is our steadiest public number for real use (release-day spikes from mirrors and CI removed), and reverse dependencies count maintainers who chose the crate. How we compute it.

Each crate in detail

  • dashmap: Blazing fast concurrent HashMap for Rust.
  • papaya: A fast and ergonomic concurrent hash-table for read-heavy workloads.

Sources

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