Rewrite cache key compare functions.
Rewrite cache key compare functions.

naver/arcus-misc,jam2in/arcus-misc,jam2in/arcus-misc,jam2in/arcus-misc,naver/arcus-misc,naver/arcus-misc,naver/arcus-misc,naver/arcus-misc,jam2in/arcus-misc,jam2in/arcus-misc,naver/arcus-misc,jam2in/arcus-misc,naver/arcus-misc,jam2in/arcus-misc,jam2in/arcus-misc,naver/arcus-misc