Hugo Nijhuis d33477c02a Add mutex protection to ConsistentHashRing for thread safety ...

- Add sync.RWMutex to ConsistentHashRing struct
- Use Lock/Unlock for write operations (AddNode, RemoveNode)
- Use RLock/RUnlock for read operations (GetNode, GetNodes, IsEmpty)

This allows concurrent reads (the common case) while serializing writes,
preventing race conditions when multiple goroutines access the hash ring.

Closes #35

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-10 15:30:58 +01:00

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