Past Memory Big Data

Sep 13, 2024 · Backend Development

How Didi Scales Online Search with Elasticsearch: Architecture, Performance, and Stability

The article details Didi's comprehensive use of Elasticsearch across all online retrieval scenarios, covering its physical‑machine architecture, gateway and control layers, data synchronization methods, cross‑datacenter replication, JDK17 + ZGC performance upgrades, cost‑saving ZSTD compression, multi‑tenant isolation, custom security, and ongoing stability practices leading to a planned upgrade to Elasticsearch 8.13.