Qunar Tech Salon

Jun 30, 2020 · Backend Development

Optimizing Lucene Stored Fields Access with a Custom Codec and In‑Memory Caching

This article describes how the Qunar hotel search team reduced Lucene stored‑fields deserialization overhead and GC pressure by implementing a custom Codec that caches stored fields in memory, redesigning the storage format, and evaluating the performance and space benefits of the approach.