Aleksei Milovidov, Dev Lead at Yandex. Since 2008 has been developing data storage systems for Yandex Metrica. ClickHouse project founder and developer.
I will talk about unusual and unique ClickHouse features:
- aggregation states as first-class citizens;
- multidimensional arrays and higher-order functions;
- approximate query execution;
- incremental data aggregation;
- query processing without the server;
I will show practical examples and use cases from Yandex and other companies.