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Nick Bozhenko
1693863499
PROBLEM: - Pod crashes with "fatal error: concurrent map writes" during S3 publications - Root cause: pathCache map in PublishedStorage accessed without synchronization - Occurs during concurrent LinkFromPool operations in S3 publishing SOLUTION: - Add sync.RWMutex to PublishedStorage struct for thread-safe map access - Implement double-check locking pattern for cache initialization - Protect all map operations (read/write/delete) with appropriate locks CHANGES: - s3/public.go: Add pathCacheMutex field and protect all map operations * Cache initialization with double-check locking in LinkFromPool * Read operations protected with RLock/RUnlock * Write operations protected with Lock/Unlock * Delete operations in Remove() and RemoveDirs() protected IMPACT: - Eliminates concurrent map writes panic - Prevents pod crashes during S3 publications - Maintains performance with minimal synchronization overhead - Uses read-write locks allowing concurrent reads while serializing writes