Recently, One of our client reached our Remote DBA team with a requirement to reduce the size of the table as it is having many text columns with huge number of records. At preliminary check , I have … Continue reading Save Space on MySQL data with Column Compression
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.
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
It is very important for every DBA’s to backup their data frequently so that they can recover data if any problems occur such as Hardware failure, System crashes, Human mistakes. There are several ways to backup MySQL data. They are 1) Physical Backup 2) Logical Backup Physical Backup: It is also called Raw Backup. It … Continue reading Mysqldump vs Mysqlpump vs Mydumper
Partitioning is a process in which a single larger table is split into several smaller tables (physically) and still considered as a single table.It is generally a good idea for the tables whose size is in a few 100 GB's. While performing select,update,delete operations in a partitioned tables, we can notice a better performance in … Continue reading MySQL Partition pruning Explained
Schema change is one of the crucial tasks in MySQL with huge tables. Schema change can cause locks. What is gh-ost? gh-ost is a triggerless online schema change for MySQL by Github Engineering .It produces light workload on the master during the schema changes . We need online schema change to alter a table … Continue reading GH-OST for MySQL Schema Change.