MySQL Functional Index and use cases.

MySQL has introduced the concept of functional index in MySQL 8.0.13. It is one of the much needed feature for query optimisation , we have seen about histogram in my last blog. Let us explore the functional index and its use cases. For the below explanation, I have used a production scenario which has 16 … Continue reading MySQL Functional Index and use cases.

TaskMax limit affects MySQL connections

Recently we had been bitten by a Systemd limitation at the “Tasks” created per-unit ie., process. This includes both the kernel threads and user-space threads, with each thread counting individually. Am writing this blog as a reference for someone who might come across this limitation. We have been actively working on migration DB instances, from … Continue reading TaskMax limit affects MySQL connections

Histogram​ in MySQL 8.0

MySQL 8.0 introduces many new features. We will have a look at the exciting histogram  feature in MySQL 8.0 Histogram: What is Histogram? In General, a histogram is an accurate representation of the distribution of numerical data. In MySQL, It will be useful to collect data distribution for a specific column. What problem it solves? … Continue reading Histogram​ in MySQL 8.0