Changelog

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All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.1.2 - 2026-01-13

Fixed

  • Added AGENTS.md and SECURITY.md to ExDoc extras to fix broken documentation links.

0.1.1 - 2026-01-13

Security

  • Added payload size limit (4MB) to prevent Denial of Service (DoS) attacks.
  • Added SECURITY.md with trust model and vulnerability reporting guidelines.
  • Mapped storage errors to correct gRPC status codes (e.g., RESOURCE_EXHAUSTED).

0.1.0 - 2025-01-10

Added

  • Initial release of Converge Ledger
  • Append-only storage with Mnesia backend
    • Sequential, immutable entries per context
    • Monotonic sequence numbers
    • Nanosecond timestamps
  • gRPC API (Protobuf-based)
    • Append - Add entries to a context
    • Get - Retrieve entries with filters (key, after_sequence, limit)
    • Snapshot - Serialize entire context to binary
    • Load - Restore context from snapshot
    • Watch - Real-time streaming of new entries
  • WatchRegistry for subscription management
    • Per-context subscriptions
    • Optional key filtering
    • Automatic cleanup on process exit
  • OTP Application with supervision tree
  • Clustering support via libcluster
  • Documentation
    • README with architecture overview
    • ARCHITECTURE.md with design decisions
    • CONTRIBUTING.md with development guidelines

Design Principles

  • Derivative, not authoritative (Rust engine holds truth)
  • Append-only (no updates, deletes, or rewrites)
  • Eventually consistent (CRDT-style without conflicts)
  • Fail-safe (data loss doesn't break correctness)