Spring Boot vs Quarkus on a 512 MB VPS with JDK 25https://www.reddit.com/r/programming/comments/1waubo1/spring_boot_vs_quarkus_on_a_512_mb_vps_with_jdk_25
I ran equivalent Spring Boot 3.5 and Quarkus 3.39 applications side by side on the same 512 MB VPS. Both were JVM applications running on JDK 25 . Quarkus native image was not used. Both had the same workload, H2 database, -Xmx80m , Serial GC, and the same JVM tuning. A few results surprised me: Quarkus initially had the higher RSS after sustained memory pressure, Quarkus had the smaller JVM heap and resident set RSS alone was misleading because Linux was swapping the two processes differently 512 MiB RAM + 256 MiB swap ultimately did not provide enough headroom for both JVMs in a later obser…