二进制资源占用说明文档 Bitmap_indexes_ _Marko_Kevac.pdf

国外的英文版二进制资源占用PPT分享文档，说明了什么是二进制索引，什么存储，什么检索，有什么样的解决方案IndexesMIndexing approachesHierarchical divisionACRYLICPAINTS0|L-treesDAINTSB-treesR-treesO(ogNIndexing approachesHash mappingNEEDLESMYOLDPNHash mapsReverse indexesYARN工THREADSO(1)BLUEUtTO(Dill BitsIndexing approaches66Instantly knowingBloom filtersMOTELCuckoo filtersN① VACANCYO(1)Indexing approachesFully using hardwarecapabilitiesBitmap indexesO(NWhy me?o badooMarko Evacmarko@kevac orgBadoo/bumble>400 000 users worldwide419401351Realtime matchesPeople on Badoo worldwidApr3,2000Searching for the best match for you using bitmap indexes since w 2010.What is a Bitmap IndeX?BitmaP /Bitset①|0o1011oO11OAND∏101A0000110」OR11o111OO。O10O01土000001Believed to be best forSearches which combine several queries forSmall cardinality (few distinct values)different columns that have small cardinalityEye colorGenderMarital statusGive me results that have thisLarge cardinalityand this or thisDistance to the city centerand definitely not thoseNumber of likes received