Ctrip Technology
Jan 18, 2018 · Big Data
Efficient IP Geolocation Using In-Memory Red-Black Tree in Real-Time Risk Control
This article describes how Ctrip's risk control system stores static IP location data in memory, transforms it into a red‑black tree for fast lookup, and outlines the data conversion process from database JSON to compact in‑memory structures, achieving high concurrency and low latency.
IP GeolocationReal-time Risk Controlbig data
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