01 Systems exhibition

Engineering
in motion.

Five systems. Different constraints. One focus: making backend behavior explicit.

Engineering tool · Concurrent JDBC workloads

Database Stress Testing Framework

A configurable Spring Boot tool for applying concurrent load to JDBC databases and watching throughput, tail latency, and failures as they happen.
worker 01worker 02worker 03worker 04worker 05worker 06worker 07worker 08worker 09
JDBC target
connectionsp50p95p99
System problem

Database performance regressions are hard to catch because you cannot compare runs reliably — different load, different data, no plan-level visibility.

Architecture

Each test gets an isolated HikariCP pool and fixed worker executor. A metrics collector publishes one-second windows over WebSocket; results persist separately from the target database and export to JSON or PDF.