sile/hash_ring

This system is an Erlang library for implementing consistent hashing rings, providing both static and dynamic node management strategies. It supports configurable node weights and multiple hash algorithms, enabling efficient distribution of data across a cluster. The codebase includes comprehensive unit tests and benchmarks to validate core behaviors like node addition, removal, and ring traversal.

This release introduces a new \hash\_ring\_dynamic\ module that uses a balanced tree for O(log N) node additions and removals, offering an alternative to the existing tuple-based \hash\_ring\_static\ implementation. Users can now assign weights to nodes via the \hash\_ring\_node:make/3\ API, allowing for uneven distribution of virtual nodes. The library also adds support for \crc32\ and \phash2\ hash algorithms, exposes a \fold/4\ function for efficient ring traversal, and includes a benchmark module to compare performance between the static and dynamic backends.

src · high confidence

The project has switched its build tool from the legacy rebar to rebar3, evidenced by the removal of the Makefile and the addition of a rebar.lock file. The rebar.config has been updated to require a minimum OTP version of 17, added a dialyzer profile with specific warning configurations, and included a test profile using the covertool plugin. Additionally, the COPYING file was renamed to LICENSE with an updated copyright year range, and .gitignore was adjusted to exclude the new \_build directory while preserving documentation markdown files.

(repo-wide) · high confidence

Added new EUnit test suites covering the \hash\_ring\_node\ module (creation and attribute retrieval), the \hash\_ring\_util\ module (hash algorithm correctness), and the main \hash\_ring\ module. The ring tests verify core behaviors including ring creation, dynamic node addition and removal, node finding, node collection, and folding operations across both static and dynamic implementation modules.

test · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 56 → 64 (+8.5)
• Rubric changed (rubric-2026.09.12 → rubric-2026.09.18) — scores are not directly comparable.

• Code Health 100 → 100 (+0.0)
• Architecture 69 → 69 (+0.0)
• Maturity 38 → 54 (+16.0)
• Readiness 64 → 68 (+3.7)
• Security 85 → 85 (+0.0)

• Coverage not measured — no coverage collector is wired up
• Documentation: no architecture or design documentation (README.md)

• Documentation: no project overview (README.md)

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

sile/hash_ring was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.