The 20th ClickHouse Meetup was held in Amsterdam, attracting attendees from across Europe and several local companies. Data engineers from MessageBird showcased their use of ClickHouse for analyzing message delivery processes, while representatives from the ClickHouse team demonstrated recent string processing optimization features. A benchmark by Altinity compared ClickHouse to TimescaleDB and InfluxDB under time-series workload, highlighting its performance advantages. Meanwhile, Crobox presented a Scala reactive client with a built-in DSL for query building, and Yandex shared insights on performance analysis of ClickHouse queries.