Migrating a MySQL database to PostgreSQL is a complex process that involves schema conversion, data transfer, query optimization, and performance tuning. In this case study, we document a real-world migration of e-commerce platform’s database from MySQL 8.0 to PostgreSQL 15. The study includes performance benchmarks before and after migration.
Project Overview
Industry
E-commerce
Database Size
~120 GB
Number of Tables
200+
Queries per Second (QPS)
~350
Replication Setup
MySQL Master-Slave is switched to PostgreSQL Streaming Replication
Primary Use Case
OLTP (Online Transaction Processing)
Goal
Improve read-heavy performance, complex query execution and JSON processing
Pre-Migration Performance Benchmarks
Before migration, we collected key performance metrics on MySQL 8.0 using sysbench and EXPLAIN ANALYZE.