Migrating Between Vector Databases (EXPLAINED)
Dual-write, shadow traffic, embedding compatibility, cutover rollback, and validation gates.
TL;DR — Quick Answer
Migrate by re-embedding or exporting vectors with metadata, dual-writing new index while shadow-comparing recall@k and latency, then gradual traffic cutover with instant rollback path. Never switch without embedding model compatibility checks and labeled eval set regression testing.
The Interview Question
Describe a safe migration plan between vector database vendors or architectures.
Deep Explanation
Migration triggers
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MigrationDual-WriteCutoverValidationPineconeMilvusQdrant