Key Takeaway
Embedding strategy decisions are hard to reverse once data is indexed, so documenting the chunking approach and model choice upfront prevents costly re-indexing.
When to Use This Template
Use this ADR when designing a new RAG system, migrating to a new embedding model, or changing your document chunking strategy. Embedding decisions affect retrieval quality, storage costs, and re-indexing effort. Because changing an embedding model requires re-embedding your entire corpus, these decisions have significant downstream cost implications and should be documented before implementation begins.
ADR Template
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