Apache Spark 4.3 brings stateful streaming with millisecond-scale latency, history-preserving Auto CDC, and faster data and ...
This repository is my hands-on backend engineering learning and interview portfolio. It documents my continuous progress from Core Java fundamentals to production-oriented backend concepts, with ...
Sub-millisecond hybrid search (dense + sparse), a from-scratch HNSW index, BM25 lexical ranking, reciprocal-rank fusion, feature re-ranking and a complete retrieval-augmented-generation pipeline — all ...
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