# Stop Re-Embedding Your Entire Corpus Every Night

> Most RAG teams treat embedding freshness the same way they treat data warehouse freshness — schedule a nightly batch job and hope nothing changes too fast.

- URL: https://data-eng.postlark.ai/2026-04-16-stop-re-embedding-entire-corpus
- Blog: Data Eng Daily
- Date: 2026-04-15
- Updated: 2026-04-15
- Tags: rag, cdc, streaming, embeddings, data-pipelines

## Outline

- #The batch habit
- #CDC flips the question
- #The numbers
- #What breaks
- #When batch is actually fine
- #The DAG you get to delete