rdblue commented on code in PR #7770:
URL: https://github.com/apache/iceberg/pull/7770#discussion_r1701018047
##########
core/src/main/java/org/apache/iceberg/encryption/StandardEncryptionManager.java:
##########
@@ -51,6 +69,8 @@ public StandardEncryptionManager(
this.tableKeyId = tableKeyId;
this.kmsClient = kmsClient;
this.dataKeyLength = dataKeyLength;
+ this.kekCacheTimeout = kekCacheTimeout;
+ this.kekCache = Maps.newHashMap();
Review Comment:
Should this use a `Cache` that has a time-based eviction policy? (See the
[Caffeine
javadocs](https://www.javadoc.io/doc/com.github.ben-manes.caffeine/caffeine/2.1.0/com/github/benmanes/caffeine/cache/Caffeine.html))
```java
LoadingCache<String, ByteBuffer> kekCache = Caffeine.newBuilder()
.expireAfterWrite(kekCacheTimeout, TimeUnit.MINUTES)
.build(key -> unwrapKey(key));
```
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