itexpert228 1742b26f0b Implement singleton resolver to prevent repeated Sources.xz parsing ... Problem: Sources.xz was being parsed multiple times during single install command - Each dependency lookup triggered fresh parsing of 37,633 packages - This caused 6.5s delays repeatedly during installation Solution: Implement singleton resolver using sync.Once - Add GetGlobalResolver() function with sync.Once pattern - Ensure Sources.xz is parsed only once per process - Thread-safe implementation for concurrent access Changes: - pkg/resolver/global_resolver.go: Singleton resolver implementation - pkg/loader/package_loader.go: Use GetGlobalResolver instead of NewFastResolver - cmd/optimized_build.go: Use GetGlobalResolver with lazy initialization - Add cacheDir fields to support singleton pattern Performance Results: - First resolver init: 477µs (includes parsing) - Subsequent calls: 42ns (11,360x faster) - Target achieved: <1ms for repeated calls Expected Behavior: - Sources.xz parsed once per process - All subsequent resolver calls reuse same instance - O(1) dependency lookups after initial load		2026-03-15 16:52:55 +03:00
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dependency_graph.go	Improve dependency resolver with 5 major enhancements	2026-03-15 16:44:36 +03:00
fast_resolver.go	Improve dependency resolver with 5 major enhancements	2026-03-15 16:44:36 +03:00
global_resolver.go	Implement singleton resolver to prevent repeated Sources.xz parsing	2026-03-15 16:52:55 +03:00