for central clearinghouses, handling checks by the tens of thousands. By the
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Crawler -- Storage : uses
2026-02-27 00:00:00:03014247210http://paper.people.com.cn/rmrb/pc/content/202602/27/content_30142472.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/27/content_30142472.html11921 本版责编：张梦旭 岳林炜 刘 刚
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.