I've been working on migrating a legacy Spring application to GraalVM, and after months of updates, it was definitely worth it! My app now uses Spring 3.7, Java 25, and GraalVM, leading to doubled throughput and significantly reduced memory consumption. However, I'm curious about why it seems like the community has a negative view of GraalVM. Apart from some configuration issues with reflections, Tomcat, and OpenTelemetry, I didn't encounter many problems. It feels odd to hear so much disdain over its compilation time when the benefits seem substantial. Can anyone shed light on this perception?
5 Answers
Many people aren't against GraalVM, but transitioning to it can be tough due to complications with dependencies and runtime features. People often remember their struggles when first adopting it, which can create a perception of negativity.
There's definitely a bit of a 'scar tissue' vibe. Early versions of GraalVM were a hassle—fragile builds and a lot of reflection issues made some developers shy away, even if there's a lot of capability now.
I get where you're coming from, but calling it hate is a stretch. The Java community is vast and diverse, and opinions differ widely. You can find some passionate discussions if you look, but it really isn't as simple as saying everyone dislikes it.
I think people often conflate GraalVM's various components. While Native Image gets a lot of attention, it’s not the only thing GraalVM offers. Many love that it exists, but the challenges with certain Java features turn some folks off.
Honestly, I don’t think there’s a hate towards GraalVM. It can be amazing when used for the right projects. Sure, it might not fit every application, but it has its merits if your use case aligns with it.
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