nx9-url-shortener/docs/CHANGELOG.md

Changelog

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

The format is based on Keep a Changelog and this project follows Semantic Versioning.

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v0.6.0 — Legacy Restore Compatibility & Version Reporting

• Legacy Backup Restore: Full backward-compatible restore support for legacy_flat_backup archives into the current multi-tenant database architecture
• CLI Version Reporting: Added --version / -V flags derived from Cargo package metadata
• Deploy Script: Removed obsolete init-db command; database creation and migration now handled by bzod serve
• Version Verification: Deploy script now verifies installed binary version matches requested version

v0.5.3 — Architecture Refinement & Redirect Hardening

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Changed

Architecture

• Eliminated the monolithic admin.rs handler file
• Reorganized admin functionality into focused feature modules under src/web/admin/
• Separated authentication, dashboard, URLs, pages, analytics, settings, users, sessions, quotas, health, backups, API keys, audit, and moderation into dedicated modules
• Extracted shared authentication and authorization helpers
• Extracted common export and helper functionality

Redirect Handling

• Removed panic-prone HeaderValue::from_str(...).unwrap() pattern from the redirect path
• Added destination URL validation (scheme validation, control character rejection)
• Added safe HTTP Location header construction
• Improved database error logging with structured fields
• Reduced unnecessary database mutex lock acquisitions on the redirect hot path
• Removed synchronous expiration writes from the redirect hot path

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Improved

• Database lock scoping across admin handlers
• Error handling consistency and observability
• Handler decomposition for oversized functions
• Reduced duplicated handler logic across admin operations

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Verified

• Root landing page (GET /) confirmed as intentional route serving www/index.html
• Release binary built successfully
• Runtime smoke tests passed (GET /, GET /login, GET /admin/login all return HTTP 200)
• SQLite WAL mode and foreign-key enforcement initialized successfully
• All existing migrations reported as up to date
• Comprehensive automated test suite passed, including:
  • Authentication and migration tests
  • Redirect security tests
  • Root landing page test
  • Backup and restore tests
  • Business workflow tests
  • Security tests
  • Slug namespace, registry, and transfer tests
  • User management and isolation tests
  • WAL recovery tests
  • HTTP end-to-end tests

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Notes

• This release is an internal architecture and quality improvement
• No new user-facing features were introduced
• Existing API and route behavior was preserved
• Existing redirect security and tenant isolation behavior was preserved

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v0.5.1 - General Availability (GA)

Release Date: 2026-06-20

BZOD v0.5.1 is the largest release since project inception, transforming BZOD from a single-user URL shortener into a complete multi-user redirector, landing page, analytics, and administration platform.

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Added

Multi-User Platform

• Multi-user architecture with isolated tenant databases
• Standard user accounts
• Administrator accounts
• User provisioning and lifecycle management
• User enable/disable operations
• User deletion workflows
• Password reset functionality
• User quota management
• User database isolation

Authentication & Security

• Session-based authentication
• CSRF protection
• Role-Based Access Control (RBAC)
• Password hashing and verification
• Session invalidation
• Login/logout workflows
• Administrative privilege separation
• Audit logging

User Self-Service Portal

• User dashboard
• My Links management
• My Pages management
• User analytics dashboard
• API token management
• Password management
• Profile management

Administration

• User management dashboard
• User detail pages
• User creation forms
• User editing interface
• Session administration
• Quota administration
• Moderation dashboard
• Slug management dashboard
• Audit event viewer
• Backup management interface
• System health dashboard

Analytics

• Per-user analytics
• URL analytics dashboards
• Landing page analytics dashboards
• Browser statistics
• Referrer tracking
• Visit logging
• Geographic analytics framework
• Analytics aggregation jobs

Content Management

• Landing page builder
• URL registry management
• Global slug namespace
• Slug ownership tracking
• Slug transfer workflows
• Soft delete support
• Moderation controls

Operations

• Backup CLI
• Restore CLI
• User backup support
• User restore support
• Database diagnostics
• Health checks
• Quota reconciliation jobs
• Retention jobs
• Expiry jobs
• Aggregation workers

Documentation

• Installation Guide
• Upgrade Guide
• Multi-User Guide
• Administration Guide
• Security Guide
• Backup & Restore Guide
• Database Documentation
• Architecture Documentation
• CLI Documentation
• API Documentation
• Testing Documentation

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Changed

Architecture

• Migrated from single-user storage model to tenant-isolated storage model
• Introduced users.db as central identity store
• Introduced system.db as global platform metadata store
• Introduced per-user content databases
• Introduced per-user analytics databases

Routing

• Unified global slug resolution
• Centralized slug ownership tracking
• Improved redirect handling
• Improved landing page routing

Analytics

• Improved aggregation performance
• Improved reporting consistency
• Improved analytics isolation

Administration

• Expanded administrative tooling
• Improved dashboard coverage
• Added operational visibility

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Security

Added

• CSRF validation
• Session management
• RBAC enforcement
• Audit event logging
• User isolation controls
• Slug ownership validation

Hardened

• Authentication flows
• Session validation
• Administrative authorization
• User lifecycle operations

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Database

Added

• users.db
• system.db
• Per-user content.db
• Per-user analytics.db
• Migration framework

Improved

• WAL mode support
• Upgrade migrations
• Backup compatibility
• Recovery workflows

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Testing

Added

Comprehensive automated validation covering:

• Authentication tests
• Authorization tests
• Migration tests
• Upgrade validation tests
• User isolation tests
• Slug namespace tests
• Slug transfer tests
• Moderation tests
• Backup and restore tests
• Disaster recovery tests
• Analytics tests
• Concurrency tests
• HTTP end-to-end tests
• Business workflow tests
• Security regression tests

Coverage

• 90+ unit and integration tests
• HTTP workflow validation
• Upgrade path verification
• Multi-user isolation verification
• Backup and recovery validation

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Fixed

Authentication

• Multi-user migration login regressions
• Session validation issues
• Administrative account migration edge cases

Routing

• Redirect handling consistency
• Slug ownership synchronization
• Landing page resolution issues

Analytics

• Aggregation edge cases
• Reporting consistency
• Isolation validation

Concurrency

• Fixed mutex deadlock conditions discovered during E2E testing
• Improved lock scoping around audit logging

Administration

• Improved slug transfer workflows
• Improved user lifecycle operations
• Improved dashboard consistency

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Upgrade Notes

From v0.4.0

BZOD v0.5.0 introduces a new multi-user architecture.

Existing installations are automatically migrated during startup.

Migration includes:

• Legacy administrator migration
• Global slug index generation
• User database creation
• Analytics preservation
• Content preservation

Backups are strongly recommended before upgrading.

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v0.4.0

Added

• Raw visitor activity logs
• Analytics drill-down pages
• Date-range analytics filters
• CSV export
• JSON export
• Advanced pagination
• Visitor log tables

Improved

• Registry pagination
• Analytics navigation
• Export performance

Fixed

• Pagination edge cases
• Analytics sorting consistency