MySQL Spotting Performance Problems
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Finding Candidates for Query Optimizations
Making use of The Performance Schema, which is a gold mine for spotting querying for optimization because it allows us to measure where the time goes
Finding the few queries that are responsible for most of the load on the system. Checking the top 1000 queries it’s usually not worth your time to optimize.
How to find the relevant information from the plethora of performance views and metrics available in MySQL
Understand why UPDATE and DELETE statements are also READS even though they are primarily write statements. This will have an impact on I/O, and therefore the response time.
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