https://tsvinc.dev/tags/aot/ Recent content in Aot on tsvinc Hugo en-us Wed, 10 Jun 2026 00:00:00 +0000 https://tsvinc.dev/posts/aot-hang-that-wasnt/ Wed, 10 Jun 2026 00:00:00 +0000 https://tsvinc.dev/posts/aot-hang-that-wasnt/ <p>One line in CLAUDE.md: &ldquo;Micronaut AOT hangs native image — keep both false. AOT disabled.&rdquo;</p> <p>Five sessions. Five different engineers (all me, different days). Nobody questioned it. The line accreted authority through repetition, the way all project folklore does. Somebody hit a problem, wrote the workaround, moved on. The workaround became canon. Canon became architecture.</p> <p>Time to look under the coat.</p> <h2 id="three-bugs-one-trenchcoat">Three Bugs, One Trenchcoat</h2> <p>What I&rsquo;d been calling &ldquo;the AOT hang&rdquo; was three separate failures happening in sequence. Fix one, hit the next. Each one looked identical from the outside: app starts, prints banner, nothing happens. The diagnosis &ldquo;AOT breaks everything&rdquo; was reasonable. It was also wrong three different ways.</p> https://tsvinc.dev/posts/aot-three-bugs-trenchcoat/ Sun, 07 Jun 2026 00:00:00 +0000 https://tsvinc.dev/posts/aot-three-bugs-trenchcoat/ <p>The CLAUDE.md for this project had a one-liner that persisted for a week: &ldquo;Micronaut AOT hangs — keep disabled.&rdquo;</p> <p>Every developer who touched the project read that line, nodded, and moved on. AOT disabled. Property set to false. Life continued. Nobody questioned it because it was technically true — AOT <em>had</em> hung — and the project worked without it.</p> <p>Then the benchmark numbers arrived. Non-heap at 119 MB. Container limit at 256 MB. JVM OOM-killing at 150 concurrent users. And a footnote in the Micronaut AOT docs: &ldquo;build-time service loading reduces runtime metaspace by eliminating classpath scanning.&rdquo;</p>