摘要:华为云数据库高级内核技术专家详解GaussDB(for MySQL)Partial Result Cache特性,如何通过缓存中间结果对算子进行加速? 本文分享自华为云社区<GaussDB创新特性解读:Partial Result Cache,通过缓存中间结果对算子进行加速>,作者:GaussDB 数据库 . 为了加速查询性能,传统的关系型数据库,比如Oracle.DB2,都有结果集缓存的特性,用来缓存一条查询语句的结果集.如果后续同样的语句被查询,数据库将直接从结果集缓存中获取结果,而
How fast is Redis? Redis includes the redis-benchmark utility that simulates running commands done by N clients at the same time sending M total queries (it is similar to the Apache's ab utility). Below you'll find the full output of a benchmark exec
使用命令 ab -c 20000 -n 100000 'http://127.0.0.1:9050/v1/api.store.xxx'进行压测,并同时进行了交叉测试,结果如下: 高并发情况下数据目前没有出错. Redis性能和框架封装的Cache性能差的不多. 1. Redis 1.1. Redis自增 ab -c 20000 -n 100000 'http://127.0.0.1:9050/v1/api.store.redis.add' This is ApacheBench, Version
What is a 'library cache: mutex X' wait? The mutex feature is a mechanism to control access to in memory structures. It is used in a number of areas including the library cache. The library cache is a memory area that holds parsed cursor structures n