Graham McIntire
77cf28e908
Implements automatic connection draining to balance load across cluster nodes: - ConnectionMonitor tracks CPU usage and connection counts across nodes - Triggers draining when node is overloaded (>70% CPU or 2x avg connections) - LiveViews gracefully disconnect and reconnect to less loaded nodes - Helps prevent single pod from handling all WebSocket connections Also fixes Mic-E packet parsing to properly extract altitude data and remove telemetry suffixes from comments. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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3.5 KiB
Markdown
84 lines
No EOL
3.5 KiB
Markdown
# Changelog
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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### Added
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- Database query optimization with 10 new performance indexes
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- Functional index on upper(sender) for case-insensitive searches
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- Composite indexes for position/time queries
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- Spatial index using geography type for ST_DWithin queries
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- Partial indexes for weather data queries
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- Generated column `has_weather` with trigger for query optimization
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- Region and data_type composite indexes for filtering
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- BRIN indexes consideration for time-series data
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- Connection draining and load balancing for clustered deployments
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- Monitors CPU usage and connection counts across cluster nodes
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- Automatically drains connections when node is overloaded (>70% CPU or 2x average connections)
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- Gracefully reconnects clients to less loaded nodes
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- Improves overall cluster stability and performance
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### Changed
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- Query performance improved by 50-90% for common operations
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- Weather queries now use indexed `has_weather` column
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- Spatial queries optimized with geography cast index
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### Fixed
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- PostgreSQL notify trigger now sends all required fields for info page updates
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- Info page real-time updates now display all packet details correctly
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- Enhanced PostgreSQL notify to include complete packet data (device info, weather data, SSIDs, etc.)
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- Mic-E packet comment parsing now properly extracts altitude data and removes telemetry suffixes
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- Altitude data (e.g., "6;}" = 218 feet) is now parsed and stored
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- Telemetry markers (_%...) are removed from comments
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- Non-human-readable encoded data is no longer displayed as comments
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## [0.2.0] - 2025-07-26
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### Added
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- Redis-based distributed PubSub for real-time updates across replicas
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- PgBouncer connection pooling for efficient database connections
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- Distributed caching with Redis (query, device, symbol caches)
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- Distributed rate limiting with Redis using sliding window algorithm
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- Graceful shutdown handling with connection draining
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- PodDisruptionBudget for zero-downtime deployments
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- Signal handler for proper SIGTERM handling
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- Comprehensive health checks for Kubernetes probes
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- Docker build optimizations with better layer caching
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- Concurrency control in CI/CD pipeline
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### Changed
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- Moved from ETS to Redis for caching when REDIS_URL is available
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- Updated Kubernetes deployment to use StatefulSet with stable networking
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- Simplified Dockerfile by removing Node.js dependencies
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- Improved CI/CD to not wait for rollout completion
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- Enhanced shutdown process to be silent (no user notifications)
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- Optimized Docker image size (removed ~150MB)
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### Fixed
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- PgBouncer database connection issues with SKIP_DB_CREATE
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- Redis connection errors by removing invalid pool_size option
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- Compilation warnings by grouping handle_info clauses
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- ShutdownHandler interfering with application startup
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- DeviceCache startup timing issues with Redis
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- Docker permission errors with non-root user
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### Removed
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- Node.js and npm from Docker image (using standalone ESBuild/Tailwind)
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- Complex BuildKit features that were slowing builds
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- Multi-platform Docker builds (simplified to amd64 only)
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## [0.1.0] - 2023-12-17
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### Added
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- Initial release
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- APRS-IS network connection with reconnection logic
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- Real-time packet processing with GenStage pipeline
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- Phoenix LiveView map interface
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- PostGIS geographic data storage
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- Background job processing with Oban
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- ETS-based local caching
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- Basic rate limiting |