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• 07:53, 17 November 2025 PC talk contribs created page I Re-wrote One Spring Boot Microservice in Rust and Measured Everything for 30 Days (Created page with "1. Why I even considered mutiny against Spring Boot I’ve shipped Spring Boot code since 2.0. I like the ergonomics, I like @Transactional, and I really like the ecosystem.
But at 03:14 on Black Friday our user-auth service cold-started in 14.2 s on a t3.medium. The ELB threw 502s for 38 seconds. We lost ~4 k sign-ups.
Post-mortem showed the JVM was 180 MB at idle and the container image cracked 420 MB.
I asked myself: “Is the JVM the only culprit, or can a c...")