The new pgvector 0.6.0 extension for Postgres significantly improves HNSW index build times by up to 30x due to a parallel index build feature. With Neon's elastic capabilities, users can scale their database resources for efficient AI applications. pgvector is crucial for semantic search and Retrieval Augmented Generation (RAG) applications, enhancing the long-term memory of large language models. Key Postgres settings such as `maintenance_work_mem` and `max_parallel_maintenance_workers` can further optimize index build performance.

7m read timeFrom neon.tech
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The power of pgvectorHNSW’s Achilles heel: memory and build timeScale up and boost index build timeHow does this affect recall performance?Conclusion

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