ClickHouse is very easy to use; one of the good features is that it has joins, which were not present in Druid, and Druid was quite expensive, especially with our applications at Sam's Club utilizing ClickHouse very quickly.
ClickHouse offers super-fast querying due to vector database functionality, supporting real-time performance with simultaneous data insertion and retrieval. It is open source, provides vendor freedom, and includes an optimizer for tasks like deduplication. It supports portal APIs, but requires persistent volumes to prevent data loss. Integration with third-party tools and documentation needs improvement. Migration challenges exist from MySQL due to syntax incompatibilities, and it's not ideal for transactional or streaming data workloads.
