How can you optimize Micronaut application startup time further?

Even though Micronaut starts fast by default, a few levers push it further, especially for latency-sensitive targets like serverless functions.

1. Prefer eager singletons sparingly: mark only truly startup-critical beans @Context; lazy initialization of the rest avoids unnecessary work on the critical path.
2. Enable Micronaut AOT: the dedicated AOT optimization pass precomputes environment deduction, caches YAML-to-property parsing, and avoids redundant configuration merging.
3. Trim classpath and dependencies: unused starters and auto-configuration modules still contribute some bean definitions to load; removing them shrinks the object graph.
4. Build a GraalVM native image: the biggest lever by far, shifting even more work, including class loading, to build time.
5. Tune logging and Netty thread pools for your actual concurrency needs instead of accepting defaults sized for general-purpose use.

For most teams, combining selective @Context use, enabling AOT, and moving to native image where feasible accounts for the large majority of achievable startup improvement; the remaining tuning options offer diminishing but still measurable returns.