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Nov 6, 2020 · Fundamentals

Understanding Android System Property Service: Architecture, Data Structures, and APIs

This article explains the Android Property system, detailing its shared‑memory architecture, the trie‑based data structures (prop_bt, prop_area, prop_info), the initialization flow in the init process, the core C APIs for adding, reading, updating and iterating properties, and the Java SystemProperties wrapper used by applications.