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Stop building your own vector index: Why managed services are eating the Postgres ecosystem

This story is from 2026-09-28. It is preserved in the archive; the latest stories are on the live feed.

Two years ago, adding semantic search to our internal document analysis tool involved a bloated Python script, a local HNSW index on a disk-heavy EC2 instance, and a prayer that the index wouldn't explode when we hit 500k embeddings. Updating the index meant a full offline rebuild, which resulted i…

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  1. 2026-09-28 13:10 · DEV Community — AI
    Stop building your own vector index: Why managed services are eating the Postgres ecosystem

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