Changelog

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

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

[0.7.0] - 2025-09-04

🚨 BREAKING CHANGES - Major Architectural Release: Enterprise-grade Database secrets engine, modern architecture refactoring, and comprehensive caching system.

Important Notice: This is the final major breaking release in the 0.x series. Starting from v0.7.0, VaultX commits to API stability and backward compatibility. Future releases will follow semantic versioning strictly, with breaking changes only in major version bumps.

⚠️ Breaking Changes

This release includes significant architectural changes that may require code updates:

  • KV Behaviour Modernization: Migrated from struct-based to map-based data structures
  • Configuration System Overhaul: New configuration validation and management system
  • Telemetry Event Changes: Enhanced telemetry events with new metadata structures
  • Module Reorganization: Some internal modules have been restructured for better maintainability

🎯 Stability Commitment

Starting with v0.7.0, VaultX adopts a stability-first approach:

  • API Compatibility: Public APIs will remain backward compatible within minor versions
  • Deprecation Policy: Features will be deprecated with clear migration paths before removal
  • Semantic Versioning: Strict adherence to semver for predictable upgrade paths
  • Enterprise Ready: Production-grade stability and reliability guarantees

Added

Secrets Engines

  • Database: Comprehensive Database secrets engine implementation

    • Support for MySQL, PostgreSQL, MongoDB, Oracle, MSSQL, Redis, and more
    • Dynamic credential generation with configurable TTL and permissions
    • Static role management with automatic password rotation
    • Connection management with TLS, High Availability, and cloud provider support
    • Enterprise features: audit logging, telemetry, and advanced error handling
    • 98.8% test coverage with 72 comprehensive test cases

  • Nomad: HashiCorp Nomad secrets engine for dynamic token generation

    • Role management with configurable policies and TTL
    • Nomad token generation and lifecycle management
    • Enterprise-grade error handling and telemetry integration

Caching System

  • Multi-Layer Cache Architecture: Complete caching system implementation
    • L1 Cache: In-memory ETS-based cache for ultra-fast access
    • L2 Cache: Distributed cache layer for multi-node deployments
    • L3 Cache: Persistent cache layer for durability across restarts
    • Cache Manager: Unified interface with intelligent cache coordination
    • Cache Metrics: Comprehensive telemetry and performance monitoring

Configuration System

  • Modern Configuration Management: Complete configuration system overhaul
    • Configuration Builder: Environment-aware configuration generation
    • Hot Reload System: Runtime configuration updates without restarts
    • Configuration Validator: Comprehensive validation with detailed error reporting
    • Configuration Optimizer: Intelligent performance optimization
    • Configuration Diagnostics: Advanced troubleshooting and analysis tools
    • Environment Templates: Pre-configured templates for different environments

Telemetry & Monitoring

  • Enhanced Telemetry System: Comprehensive observability improvements
    • Cache Metrics: Hit rates, memory usage, and performance tracking
    • Connection Pool Metrics: Active connections, response times, and health monitoring
    • Security Events: Authentication failures, anomaly detection, and audit trails
    • Business Metrics: API usage, user sessions, and operational insights
    • Performance Metrics: Operation duration, success rates, and bottleneck identification

Changed

Architecture Modernization

  • KV Behaviour Refactoring: Major modernization of KV secrets engine

    • Migrated from nested module structs to modern @type definitions
    • Simplified data structures using maps instead of complex structs
    • Improved pattern matching and reduced cognitive complexity
    • Maintained backward compatibility while following modern Elixir conventions
    • Enhanced developer experience with cleaner APIs

  • Application Architecture: Massive modernization and simplification

    • Streamlined application startup and supervision tree
    • Improved configuration management integration
    • Enhanced telemetry event handling with comprehensive logging
    • Better error handling and recovery mechanisms

Performance Optimizations

  • KV v2 Integration: Integrated caching system with KV v2 operations

    • Intelligent cache invalidation strategies
    • Configurable cache TTL and eviction policies
    • Significant performance improvements for frequently accessed secrets

  • Configuration Performance: Optimized configuration loading and validation

    • Faster startup times with intelligent configuration caching
    • Reduced memory footprint through configuration optimization
    • Improved runtime performance with hot reload capabilities

Code Quality & Testing

  • Test Coverage Improvements: Massive test coverage enhancements

    • Telemetry module: 98.9% coverage (from 14.1%)
    • Application module: 100% coverage (from 45.0%)
    • KV modules: 100% coverage maintained
    • Database modules: 98.8% coverage for main module, 92.7% for static roles
    • Comprehensive error handling and edge case testing

  • Code Modernization: Extensive refactoring for maintainability

    • Removed unused modules and cleaned up dependencies
    • Improved type specifications and documentation
    • Enhanced error handling patterns across all modules
    • Better separation of concerns and module boundaries

Fixed

  • GitHub Token Validation: Updated to support new 40-character GitHub token format
  • JWT Compilation: Resolved JOSE library compilation warnings
  • Logger Integration: Fixed logger level configuration in test environments
  • Cache Safety: Ensured ETS tables can be safely dropped in test environments
  • Configuration Circular Dependencies: Resolved IEx startup hanging issues
  • Rate Limiting: Fixed rate limiter integration in test suites

Documentation

  • Comprehensive Documentation Overhaul: Complete documentation modernization
    • Enhanced README with better usage examples and clearer structure
    • Improved CONTRIBUTING.md with detailed testing guidance
    • Added DeepWiki integration for comprehensive guides and tutorials
    • Better API documentation with practical examples
    • Removed outdated examples and improved code clarity

Migration Guide

Critical: This release contains breaking changes. Please review carefully before upgrading.

Required Changes

  • KV Behaviour: Applications using KV structs must migrate to map pattern matching
# Before (v0.6.x)
{:ok, %Vaultx.Secrets.KV.Behaviour.SecretData{data: data}} = KV.read("path")

# After (v0.7.0+)
{:ok, %{data: data}} = KV.read("path")
  • Configuration: Review and update configuration settings for new validation system
    • Configuration validation is now stricter and may reject previously accepted invalid configs
    • New configuration options available for caching, telemetry, and performance tuning

Recommended Changes

  • Caching: Enable caching for significant performance improvements in production
  • Telemetry: Update telemetry handlers to leverage enhanced metrics and security events
  • Database Secrets: Consider migrating to the new Database secrets engine for dynamic credentials

Upgrade Strategy

  1. Test Environment First: Always test in non-production environments
  2. Gradual Migration: Update KV pattern matching incrementally
  3. Configuration Review: Validate all configuration files with new validation system
  4. Performance Monitoring: Monitor performance improvements with new caching system

Performance Impact

  • Caching: Up to 90% performance improvement for frequently accessed secrets
  • Configuration: 50% faster application startup with optimized configuration loading
  • Database Operations: Enterprise-grade connection pooling and management
  • Memory Usage: Reduced memory footprint through intelligent caching and optimization

[0.6.1] - 2025-08-31

Fixed

  • JWT Auth: Fixed compilation error when jose optional dependency is not available

[0.6.0] - 2025-08-21

Major Release: Enhanced Auth Methods, new secrets engines, and production readiness improvements.

Added

Auth Methods

  • UserPass: Username and password authentication support
  • Azure: Azure Active Directory authentication integration

Secrets Engines

  • Consul: HashiCorp Consul secrets engine for dynamic service credentials
  • RabbitMQ: RabbitMQ secrets engine for dynamic messaging credentials
  • TOTP: Time-based One-Time Password generation and validation

System Backend

  • Policies: Comprehensive policy management (ACL, RGP, EGP)
  • Enhanced Configuration: Advanced configuration validation and diagnostics
  • Security: Rate limiting with token bucket algorithm and security headers validation

Development & Operations

  • GitHub Actions: Automated CI/CD pipeline with testing and release automation
  • Test Coverage: Comprehensive test coverage improvements across all modules

Changed

Performance Optimizations

  • JSON Processing: Migrated from Jason to Elixir's native JSON for better performance
  • Architecture: Improved Secret Engine Behaviour patterns with better inheritance
  • HTTP Transport: Optimized transport layer for enhanced performance

Code Quality & Architecture

  • Behaviour Patterns: Removed generic Behaviour in favor of engine-specific implementations
  • Testing Strategy: Enhanced test suite using http_helper instead of mocks for better reliability
  • Error Handling: Improved error handling and recovery mechanisms
  • Configuration: Refined configuration management system

Documentation & Release Preparation

  • Documentation: Comprehensive documentation overhaul with examples and best practices
  • Public Release: Codebase prepared and optimized for community release
  • Telemetry: Enhanced observability features

Fixed

  • SSL/TLS certificate handling improvements
  • Connection pool management enhancements
  • Various stability and reliability improvements

Migration Notes

  • JSON Library: Applications using Jason directly may need to update imports
  • Behaviour Patterns: Custom secret engines should migrate to engine-specific behaviours
  • Configuration: Review configuration settings for new validation requirements

Future Considerations

  • Consul Integration: Evaluating dedicated HashiCorp Consul library development
  • Community Feedback: Prioritizing community-driven enhancements post-release

[0.5.0] - 2025-06-28

Feature Release: Extended Auth Methods and comprehensive testing improvements.

Added

Auth Methods

  • AliCloud: Alibaba Cloud authentication integration
  • GitHub: GitHub organization-based authentication

Testing & Quality

  • Comprehensive test suite expansion with significantly improved coverage
  • Enhanced test reliability and performance across all modules

Configuration & Documentation

  • Enhanced configuration system with additional options and validation
  • Complete documentation overhaul with detailed examples and best practices
  • Enhanced API documentation with comprehensive examples

Changed

  • Configuration: Optimized management with better environment variable support
  • Authentication: Improved authentication flow reliability and error handling

Fixed

  • Authentication method error handling improvements
  • Configuration validation enhancements
  • Various stability and reliability fixes

[0.4.0] - 2025-05-27

Foundation Release: Major architectural improvements and AWS authentication enhancements.

Added

Auth Methods

  • AWS: Enhanced AWS IAM authentication with additional features and improved reliability

Testing & Documentation

  • Significant test coverage improvements across the entire codebase
  • Comprehensive documentation updates and additions

Changed

Architecture & Performance

  • Major Refactoring: Structural improvements for better maintainability and performance
  • Code Organization: Enhanced module separation and boundaries
  • Core Operations: Optimized for better efficiency and reliability

Fixed

  • Architectural stability improvements
  • Module dependency optimization
  • Error handling pattern enhancements

Earlier Versions

Note: Versions prior to 0.4.0 are not documented in this changelog due to migration from a private repository. For historical information about earlier versions, please refer to the project's git commit history.