# Aggregation of records in a set using TTL and LUT

**URL:** <https://discuss.aerospike.com/t/aggregation-of-records-in-a-set-using-ttl-and-lut/12559>\
**Category:** General Discussion\
**Tags:** query\
**Created:** [October 4, 2025, 11:30am UTC](https://discuss.aerospike.com/t/aggregation-of-records-in-a-set-using-ttl-and-lut/12559 "2025-10-04T11:30:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ghrahul](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/ghrahul/32/2655_2.png) [@ghrahul](https://discuss.aerospike.com/u/ghrahul)\
**Post date:** [October 4, 2025, 11:30am UTC](https://discuss.aerospike.com/t/aggregation-of-records-in-a-set-using-ttl-and-lut/12559/1 "2025-10-04T11:30:51Z")

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How can I count the number of records and do a comparison between TTL and age of the records(derived from LUT). What is the best way to do it?

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**Author:** ![Albot](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/albot/32/2076_2.png) [@Albot](https://discuss.aerospike.com/u/Albot)\
**Post date:** [October 12, 2025, 9:57pm UTC](https://discuss.aerospike.com/t/aggregation-of-records-in-a-set-using-ttl-and-lut/12559/2 "2025-10-12T21:57:32Z")

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You’ll want to write some kind of program to emit a histogram for that. I think you could probably extend my exporter to do that [GitHub - Alb0t/aerospike-ttl-exporter](https://github.com/Alb0t/aerospike-ttl-exporter)

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**Author:** ![system](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/system/32/2274_2.png) [@system](https://discuss.aerospike.com/u/system)\
**Post date:** [October 12, 2026, 9:57pm UTC](https://discuss.aerospike.com/t/aggregation-of-records-in-a-set-using-ttl-and-lut/12559/3 "2026-10-12T21:57:57Z")

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Closed on October 12, 2026, 9:57pm UTC

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