Java Captain

Mar 21, 2021 · Databases

Performance Comparison of Auto‑Increment, UUID, and Random Snowflake IDs in MySQL

This article investigates why MySQL recommends auto_increment primary keys over UUID or non‑sequential snowflake IDs by building three tables, running insert‑and‑query benchmarks with Spring Boot's JdbcTemplate, analyzing index structures, and summarizing the performance trade‑offs and practical drawbacks of each key strategy.