I know about continuous queries, but they also send both value and key(or is the possibility to change the event to send only the key for continuous queries?). I used ignite cache as a cache so sometimes I read from it, but I am doing local register from keys on the ignite-client so I need to be notified with the new key added to the cache. If there is no possibility to be notified of the new key, I will have to create the new cache that will store keys as values, but I would rather avoid this.
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