Hi Sergey, keys are just keys. Lookup by key works only if you know the key in advance, be it a simple or complex key. Keys are not indexed. So no, searching for keys does not work and there is no plan to support that. It's one of the many things Infinispan cannot do because it is not a relational database and we do no plan to become one :). But there are ways to overcome this limitation. You already de-normalize your data when placing it in the grid, because Infinispan does not manage relations. During this process you should copy relevant properties of the key into the value itself if you intend to search by those properties. Adrian On 04/23/2018 11:26 AM, Sergey Chernolyas wrote: