#embeddings

Semantic Cache for LLM Calls with Redis Vector Sets (2026)

July 8, 2026

Build a semantic cache for LLM calls with Redis 8's native VADD/VSIM vector sets in Node.js and TypeScript — cache hits on paraphrases, not just exact text.

#redis #semantic cache

Cosine Similarity vs Dot Product for Embeddings (2026)

June 30, 2026

Cosine similarity vs dot product for embeddings, with runnable TypeScript. Learn when to normalize, why they match for unit vectors, and which to pick.

#cosine similarity #dot product

Token-Aware Text Chunking for RAG in TypeScript (2026)

June 28, 2026

Token-aware text chunking for RAG in TypeScript: recursive splitting with @langchain/textsplitters and js-tiktoken, plus chunk size and overlap tuning.

#text chunking #rag

pgvector HNSW Postgres 18 Production Tuning Tutorial 2026

May 16, 2026

Tune pgvector 0.8.2 HNSW indexes on PostgreSQL 18: ef_search, halfvec quantization, iterative scans, and parallel builds with a runnable Docker setup.

#pgvector #postgres

RAG Optimization: Smarter Retrieval Systems

December 13, 2025

RAG optimization: chunk sizing, hybrid retrieval, reranking, query rewriting, and evaluation — smarter retrieval-augmented systems that actually rank well.

#RAG #LLM