Beike Product & Technology
Jul 1, 2021 · Big Data
Oak Off‑Heap Key‑Value Map and Its Application in Apache Druid for Real‑Time and Batch Ingestion
The article introduces Oak, an off‑heap concurrent key‑value map, explains its design and performance benefits over ConcurrentSkipListMap, and details extensive offline and real‑time ingestion experiments in Apache Druid that demonstrate reduced memory usage, lower CPU consumption, and faster data loading.
Apache DruidBig DataIncremental Index
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