所有，Roaring是兼顾空间与时间效率的一种有效的索引结构。
网址：httpRoaring网址：http://roaringbitmap.org/
Java代码实现 [https://github.com/RoaringBitmap/RoaringBitmap Java-Roaring]
**Roaring 研究论文：
# Lemire, Daniel, Gregory Ssi‐Yan‐Kai, and Owen Kaser. "Consistently faster and smaller compressed bitmaps with Roaring." Software: Practice and Experience 46.11 (2016): 1547-1569.
# Samy Chambi, Daniel Lemire, Owen Kaser, and Robert Godin. "Better bitmap performance with Roaring bitmaps." Software: practice and experience, 2015.