探索互联网



探索互联网

存储三种类型基于hash数据结构比如redis以及小图片系统TFS,hash数据结构能够支持读写qps很高是做存储非常好数据结构,redis类存储结构缺点是成本高;以及基于B+树MySQL,MySQL类数据库支持完整sql语法使用方面,对于事务支持好,但B+树这种数据结构对于大量随机写,当数量大之后性能会变差;再有是基于LSM bigtable、hbase等,LSM将写入变随机为顺序写入,极大增加存储写入速度,基于LSM存储利用BoomFilter过滤器、table缓存等技术加快读取速度,但是读取qps依然会小于redis很多。


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