I'd recommend taking a look at ClickHouse for storing and analyzing billions of ad-tech raw events in real time. There is no need in grouping them beforehand, s

I'd recommend taking a look at ClickHouse for storing and analyzing billions of ad-tech raw events in real time. There is no need in grouping them beforehand, since ClickHouse is able to scan billions of rows per second per server. See https://clickhouse.yandex https://clickhouse.yandex