martinsumner/kv_index_tictactree

This system is an Erlang library implementing Active Anti-Entropy (AAE) for Riak KV, designed to detect and repair data drift between nodes. It utilizes non-cryptographic Merkle trees to efficiently compare and synchronize key-value stores through asynchronous exchanges and consistency repair subsystems. The codebase includes core modules for managing repair lifecycles, tree caching, and parallel key store operations, supported by comprehensive end-to-end and property-based testing.

A new include file \aae.hrl\ has been added, defining non-configurable defaults such as \TREE\_SIZE\ and \MAGIC\, along with tag definitions like \HEAD\_TAG\ and \RIAK\_TAG\. It introduces helper macros for logging, specifically \STD\_LOG\ and \STD\_LOG\_INT\, which integrate with \leveled\_log\ and \logger\ to handle log level checks and message formatting, including conditional type definitions for OTP versions prior to 26.

include · high confidence

This change introduces the KV Tictac Tree library, an Active Anti-Entropy (AAE) implementation for Erlang-based key-value stores. The project provides a new \rebar.config\ build file and comprehensive documentation (\README.md\) outlining the library's purpose: using non-cryptographic Merkle trees (TicTac trees) to efficiently compare and synchronize data stores. The library supports segment filtering, cached tree views, and asynchronous exchanges, targeting integration with Riak KV versions 2.9, 3.0, and 3.1, with OTP support ranging from R16 up to OTP 27.

(repo-wide) · high confidence

Adds a new set of Erlang modules (aae\_controller, aae\_exchange, aae\_keystore, aae\_runner, aae\_treecache, aae\_util) that implement an Anti-Entropy (AAE) repair system for Riak KV. The controller manages the lifecycle of repair exchanges, coordinating with a key store (supporting both parallel and native modes) and a tree cache to compare and reconcile data differences between nodes. The exchange module handles the logic for full and partial tree comparisons, root/branch/clock checks, and repair triggers, while the runner manages asynchronous fetch operations. This provides the core infrastructure for detecting and fixing data drift within the cluster.

src · high confidence

Added property-based tests for AAE controller lifecycle; Added test for user-defined timeout on wait\_on\_sync; Initial end-to-end test suite for AAE controller and mock vnodes.

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

• CAI 62 → 76 (+14.4)
• Rubric changed (rubric-2026.09.12 → rubric-2026.09.18) — scores are not directly comparable.

• Code Health 93 → 93 (+0.0)
• Architecture 100 → 100 (+0.0)
• Maturity 44 → 73 (+29.5)
• Readiness 56 → 66 (+9.2)
• Security 100 → 100 (+0.0)
• Event Sourcing 100 → 100 (+0.0)

• Coverage not measured — no coverage collector is wired up
• Documentation: no installation or build instructions (README.md)
• Documentation: no usage examples (README.md)

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

martinsumner/kv_index_tictactree 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.