Small tests around Spring Boot, packaging, startup, memory, and deployment. One concrete question, the smallest useful run, and a public record of what happened. Longer write-ups live in Articles when a result needs more room.
Equivalent JDBC apps on Java 25, measured one at a time for startup, resident memory, and CPU. Quarkus had the lowest overall median RSS; its memory use converged with Micronaut’s near the end of this single run.
A controlled comparison of startup, first-request latency, and memory. The official extracted layout cut median startup 23.3% and first-request latency 34.1%.
A side-by-side JVM-mode comparison on the same 512 MB virtual machine, JDK 25, and 80 MiB heap.
A practical look at Spring Boot, compact object headers, and monitoring on a 256 MiB VPS.
A small stars app used about 90 MiB less RSS with JDBC than with JPA and Hibernate, and reached its dashboard about four seconds sooner.
A quick comparison of fat JAR, extracted layout, and Gradle application distribution startup and first-request latency.
A short comparison of Spring Boot's extracted layout and a Jib-style exploded application layout on a constrained VM.
A short follow-up comparing RSS, process swap, workload health, and monitoring continuity under the same constrained JVM profile.
A no-swap follow-up comparing RSS, process swap, workload health, and monitoring continuity with approximately 1 GiB of RAM.
Quick experiments are designed to answer a practical question quickly. A run may use one environment and only a few samples, and each write-up should say so. Featured experiments use more controlled methodology and are documented as fuller studies, with articles when a result warrants more room.
Source, commands, supporting files, and selected raw evidence live in the public PVR Labs experiments repository.
For longer-running experiments, StatLite provides lightweight Spring Boot and JVM monitoring without a separate Prometheus/Grafana stack.