- Implement context cleanup with sync.Once and io.Closer interface
- Add regex-based error classification for robust error handling
- Create ProcessManager with thread-safe process tracking
- Add disk space caching with 30s TTL for performance
- Implement metrics collection with structured logging
- Add config persistence (.dbbackup.conf) for directory-local settings
- Auto-save/auto-load configuration with --no-config and --no-save-config flags
- Successfully tested with 42GB d7030 database (35K large objects, 36min backup)
- All cross-platform builds working (9/10 platforms)
1. Parallel Cluster Operations (3-5x speedup):
- Added ClusterParallelism config option (default: 2 concurrent operations)
- Implemented worker pool pattern for cluster backup/restore
- Thread-safe progress tracking with sync.Mutex and atomic counters
- Configurable via CLUSTER_PARALLELISM env var
2. Progress Indicator Optimizations:
- Replaced busy-wait select+sleep with time.Ticker in Spinner
- Replaced busy-wait select+sleep with time.Ticker in Dots
- More CPU-efficient, cleaner shutdown pattern
3. Signal Handler Cleanup:
- Added signal.Stop() to properly deregister signal handlers
- Prevents goroutine leaks on long-running operations
- Applied to both single and cluster restore commands
Benefits:
- Cluster backup/restore 3-5x faster with 2-4 workers
- Reduced CPU usage in progress spinners
- Cleaner goroutine lifecycle management
- No breaking changes - sequential by default if parallelism=1
Phase 1: Detection & Guidance
- Detect OS user vs DB user mismatch
- Identify PostgreSQL authentication method (peer/ident/md5)
- Show helpful error messages with 4 solutions:
1. sudo -u <user> (for peer auth)
2. ~/.pgpass file (recommended)
3. PGPASSWORD env variable
4. --password flag
Phase 2: pgpass Support
- Auto-load passwords from ~/.pgpass file
- Support standard PostgreSQL pgpass format
- Check file permissions (must be 0600)
- Support wildcard matching (host:port:db:user:pass)
Tested on CentOS Stream 10 with PostgreSQL 16
HIGH PRIORITY FIXES:
1. Remove unused progressCallback mechanism (dead code cleanup)
2. Add unit tests for restore package (formats, safety checks)
- Test coverage for archive format detection
- Test coverage for safety validation
- Added NullLogger for testing
3. Fix ignored errors in backup pipeline
- Handle StdoutPipe() errors properly
- Log stderr pipe errors
- Document CPU detection errors
IMPROVEMENTS:
- formats_test.go: 8 test functions, all passing
- safety_test.go: 6 test functions for validation
- logger/null.go: Test helper for unit tests
- Proper error handling in streaming compression
- Fixed indentation in stderr handling
- PostgreSQL and MySQL support
- Interactive TUI with fixed menu navigation
- Line-by-line progress display
- CPU-aware parallel processing
- Cross-platform build support
- Configuration settings menu
- Silent mode for TUI operations
