xunliu commented on code in PR #8297:
URL: https://github.com/apache/gravitino/pull/8297#discussion_r2313882917
##########
core/src/main/java/org/apache/gravitino/cache/CaffeineEntityCache.java:
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@@ -194,6 +207,7 @@ public void clear() {
withLock(
() -> {
cacheData.invalidateAll();
+ reverseIndex = new ReverseIndexCache();
cacheIndex = new ConcurrentRadixTree<>(new
DefaultCharArrayNodeFactory());
Review Comment:
```
// Reinitialization: O(1) time complexity
reverseIndex = new ConcurrentRadixTree<EntityCacheKey>(new
DefaultCharSequenceNodeFactory());
// Iterative deletion: O(n) time complexity, requires traversing all nodes
for (CharSequence key : reverseIndex.getKeysStartingWith("")) {
reverseIndex.remove(key); // Each removal operation has overhead
}
```
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