2025
JPoint - Serebryansky - Exactly Once in Kafka 0:00 of 33:42
    https://www.youtube.com/watch?v=8Ef2V9UacfU
    https://jpoint.ru/talks/8fc4127d2e3142e99453d930231970e9/
    https://squidex.jugru.team/api/assets/srm/b9d9ffdc-4777-4c47-8ef2-0fa3ebabc519/serebryanskii-.pdf
2018
HighLoadChannel - Vybornov - Kafka in HighLoad ru of 37:49
    https://www.youtube.com/watch?v=BtmYjTO1EpI
    ! The only way to provide exactly-once semantics is to atomically save both offsets and data outside of kafka