Consider using opaque symbols for your object/cache identifiers instead of using meaningful literals. That way, you can simply update the identifier mapping (Pr

Consider using opaque symbols for your object/cache identifiers instead of using meaningful literals. That way, you can simply update the identifier mapping (Project A cache prefix moves from ajsdf09yu8sbvoihjasdg -> klajnsdg9fasf8avby), and the old values will naturally be evicted from the cache as they become less frequently accessed. In my experience, having to perform cache invalidation is usually a sign of design immaturity. Senior engineers have been through this trial before :-)