Will IO Size Affect your RDS Performance?​

During our recent consulting with one of our client, We came across an interesting issue on RDS. The baseline is that "Low IO size on your RDS instance can affect your DB performance".  Yes, It’s IO size, Not IOPS. We had our production systems running on RDS MySQL with a single master, 3 replicas. All … Continue reading Will IO Size Affect your RDS Performance?​

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ProxySQL Series : Query Cache with ProxySQL

We know that MySQL query cache is deprecated as of MySQL 5.7.20 and removed in MySQL 8.0 and It has been recommended to use ProxySQL (or other) external query cache instead. In this blog post, we’ll present the ProxySQL query cache functionality and how does it help us. How to setup ProxySQL between client and database … Continue reading ProxySQL Series : Query Cache with ProxySQL

Common Table Expression (CTE) MySQL 8.0.

1.0. Introduction: MySQL 8.0 was released with awesome features. One of its most prominent features is CTE (Common Table Expression). The Common Table Expression can be used to construct complex queries in a more readable manner. In this blog, I have described how the CTE works with some useful examples. 1.1 What is CTE? A Common … Continue reading Common Table Expression (CTE) MySQL 8.0.