spring-framework

Spring Framework

Tree: 1b93ea97ac

Brian Clozel 1b93ea97ac Fix concurrent reads issue in MimeTypeUtils cache As of gh-22340, `MimeTypeUtils` has a built-in LRU cache implementation for caching parsed MIME types and avoiding excessive garbage creation at runtime. This implementation, when hit with highly concurrent reads on the same media type (the cache key), can create multiple keys for the same MIME type string. This duplication leads to the cache filling up and evicting entries. When the cache fetches a duplicate key, it is then not associated with a value and the cache can return a `null` value, which is forbidden by the API contract. This commit adds another cache check within the write lock: this avoids creating duplicate entries in the cache and `null` return values. Fixes gh-23211	7 years ago
..
src	Fix concurrent reads issue in MimeTypeUtils cache	7 years ago
spring-core.gradle	Restore javax meta-annotation lookup behavior	7 years ago

Brian Clozel 1b93ea97ac Fix concurrent reads issue in MimeTypeUtils cache

As of gh-22340, `MimeTypeUtils` has a built-in LRU cache implementation
for caching parsed MIME types and avoiding excessive garbage creation at
runtime.
This implementation, when hit with highly concurrent reads on the same
media type (the cache key), can create multiple keys for the same MIME
type string. This duplication leads to the cache filling up and evicting
entries. When the cache fetches a duplicate key, it is then not
associated with a value and the cache can return a `null` value, which
is forbidden by the API contract.

This commit adds another cache check within the write lock: this avoids
creating duplicate entries in the cache and `null` return values.

Fixes gh-23211

7 years ago

src

Fix concurrent reads issue in MimeTypeUtils cache

7 years ago

spring-core.gradle

Restore javax meta-annotation lookup behavior

7 years ago