jeffjirsa commented on code in PR #1988:
URL:
https://github.com/apache/cassandra-java-driver/pull/1988#discussion_r2062940446
##########
core/src/main/java/com/datastax/oss/driver/internal/core/type/codec/registry/DefaultCodecRegistry.java:
##########
@@ -159,7 +159,13 @@ public boolean equals(Object other) {
@Override
public int hashCode() {
- return Objects.hash(cqlType, javaType, isJavaCovariant);
+ // NOTE: inlined Objects.hash for performance reasons (avoid Object[]
allocation
+ // seen in profiler allocation traces)
+ int h1 = Objects.hashCode(cqlType);
+ int h2 = Objects.hashCode(javaType);
+ int h3 = Boolean.hashCode(isJavaCovariant);
+
+ return ((31 + h1) * 31 + h2) * 31 + h3;
Review Comment:
I haven’t seen the profile to know if this is called repeatedly on the same
object, but given the final fields, is memoizing this even easier?
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