preshing/junction

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1459 stars · 160 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Junction is a C++ library of concurrent data structures, offering several lock-free concurrent hash map implementations such as ConcurrentMap_Leapfrog and ConcurrentMap_Grampa. It builds with CMake and depends on the Turf library.

Use cases

• use a lock-free concurrent hash map in C++
• share a hash map across multiple threads safely
• high-performance concurrent key-value lookups
• replace mutex-protected std::unordered_map in multithreaded code
• benchmark concurrent map implementations

When to choose

• you need proven lock-free hash maps in a C++ project
• your build already uses CMake
• you need fine-grained control over concurrency trade-offs across map variants

When to avoid

• you need general-purpose containers beyond hash maps
• you want a header-only drop-in with no dependencies (Turf is required)
• your project uses a different build system and you dislike vendoring sources

Facets

library · maturity maintenance

concurrency database developer-tools performance developer-tools cpp cross-platform windows concurrent-hash-map lock-free data-structures cmake algorithms linux macos

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