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External Indexing

Assess

Techniques

An indexing approach that keeps lookup metadata separate from the underlying data files.

Why it's here

Placed in Assess: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 1 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

  • 7InfoQ·8/12/2026research
    Spotify Adds External Indexing for Low-Latency Parquet Queries

    Spotify has introduced an external indexing architecture for Apache Parquet data lakes so point queries can be served with low latency without copying data into operational databases. The approach maps lookup keys to file and row locations, enabling targeted reads from cloud object storage for analytics, machine learning, AI applications, and online services.