Move `AnsiOutputApplicationListener` from `o.s.b.context.config`
to `o.s.b.support` since it's more of a supporting class than a
context concern.
See gh-47232
Move the `EnvironmentPostProcessor` from `org.springframework.boot.env`
to `org.springframework.boot` so that we can make the `env` package
foundational.
Most `EnvironmentPostProcessor` implementation has also been relocated
to a new `org.springframework.boot.support` package.
See gh-47232
Move bootstrap code from `org.springframework.boot` to
`org.springframework.boot.bootstrap` and make them a foundational
layer.
This move helps reduce `org.springframework.boot.context.config`
dependencies to `org.springframework.boot`.
See gh-47232
The resource resolver in DevTools can cause performance degradation
during application restarts in large projects. Key methods like
isDeleted() and getAdditionalResources() rely on nested loops, leading
to O(n*m) complexity.
This commit refactors ClassLoaderFiles to use a pre-computed, flattened
map. This provides O(1) complexity for direct lookups and allows for
efficient single-loop iteration.
The ClassLoaderFilesResourcePatternResolver is updated to leverage this
new, efficient structure:
- getFile() and size() are improved from O(n) to O(1).
- isDeleted() and getAdditionalResources() are improved from O(n*m) to
O(m) by eliminating nested loops.
- Data consistency is maintained across all operations.
This optimization significantly improves restart performance with a
minimal memory footprint, while preserving the existing API and
exception handling behavior.
See gh-46289
Signed-off-by: DongHoon Lee <dhl1924@naver.com>
Phillip Webb
Moritz Halbritter
DongHoon Lee
Andy Wilkinson
Stéphane Nicoll