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Preface In order to know clearly about the real performance threshold of database server,we usually do database benchmarks.What's it?It's similar with 阅读全文
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Preface Sometimes we need to know the details of a program(porcess) when it is running even it's on the edge of crach.There's a lot of tools can be us 阅读全文
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Preface User privileges regulation is pretty important in DBAs routine job.As we all know,it's the less the better to reduce risks when someone who ha 阅读全文
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Preface As usual we will check the MySQL executed plan of SQL query by execute "explain select ... ;".It's a simple way to get the information of exec 阅读全文
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Preface Sometimes,we are determined to kill some MySQL connections which are occupying huge resources(CPU,memory,etc) that maybe lead to server crash. 阅读全文
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Preface Connection security is one of the most important safety strategies which we should consider.It's not a good manner using plaintext password in 阅读全文
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Preface As a matter of fact,disk IO is the most important factor which tremendously influence performance of database especially in OLTP which is usua 阅读全文
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Preface There're many ways relevent with performance tuning.For example,using indexes properly is important in doing that.At the very beginning of rel 阅读全文
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Preface Several days ago,I've implement a docker environmnet,I'm gonna Install a MySQL 8.0 version on it.Let's see the detail of it. Procedure Check a 阅读全文
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Preface Performance issues are what DBA most concerned thing.There're always a lot of SQL queries which maybe not using appropriated indexes cause bad 阅读全文