Hi @hectorvp .. Q - Is there any way to find how many events were dropped by UF in a day? A - nope. if you analyse this situation little more, you can understand that,.. 1. UF sends the data to indexer. lets say indexer is down. then the data is not dropped, it is still waiting to be read at UF. when indexer comes up again, it will start reading from where it left before going down. 2. the persistent queues are one solution to look for. By default, forwarders and indexers have an in-memory input queue of 500KB. you can configure and increase the size of this queue, so that there will be no concerns about data dropped. https://docs.splunk.com/Documentation/Splunk/latest/Data/Usepersistentqueues 3. the indexer acknowledgement feature is another good solution. it adds little more load on indexer, but it is worth the load. so, with indexer acknowledgement feature, the indexer and UF will have an extra layer of "handshakes", so that UF and indexer always knows that the data is not dropped. clear documentation on this indexer acknowledgement feature: https://docs.splunk.com/Documentation/Splunk/latest/Forwarding/Protectagainstlossofin-flightdata (PS - i have given around 350+ karma points so far, received badge for that, if an answer helped you, a karma point would be nice!. we all should start "Learn, Give Back, Have Fun")
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