Senior LevelMongoDB & Mongoose
How does MongoDB execute Two-Phase Commit (2PC) for multi-shard distributed transactions?
❓ Interview Prompt: Explain multi-shard transactions, Transaction Coordinator node, Two-Phase Commit protocol (Prepare & Commit phases), and global atomicity.
Multi-shard transactions use a Transaction Coordinator node executing a Two-Phase Commit protocol across participating shard nodes.
Code Implementation Example
typescript
console.log('Transaction Coordinator executes Two-Phase Commit across multi-shard cluster partitions');💡Two-Phase Commit distributed transaction architecture.
🎯 Interview Key Takeaway
Multi-shard transactions use Two-Phase Commit to guarantee global ACID atomicity across cluster partitions.
#Two-Phase Commit#2PC#Distributed Transactions#Senior
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