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Roaring bitmaps are compressed bitmaps that combine the speed of
uncompressed bitsets with the memory efficiency of compression — often
hundreds of times faster than older formats.
Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON)
optimizations: used by Apache Doris, ClickHouse, Alibaba Tair, Redpanda, YDB
and StarRocks.
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