ClickHouse review

ClickHouse lists a free tier, and the entry price shown in the databases ranking is €4.38, below the €5.83 seen across the wider field. Small teams can evaluate on the free tier, then move up once their tables outgrow it.

ClickHouse is a columnar engine, so it suits wide tables of events, logs and metrics rather than row heavy transaction work. UCloud lists MySQL, PostgreSQL and MongoDB and Heroku lists PostgreSQL, Redis and Kafka, which cover general purpose relational and cache workloads instead.

It does, and the paid entry point is €4.38. Treat the free tier as a trial, because backups on the service run at Backups every 24h, retained for 1 day, so anything you need to keep should live elsewhere until a paid plan is in place.

The service is provided by ClickHouse, Inc., founded in 2021. Terms and contracts sit with that legal entity, so read its terms before you commit to a paid plan, and pay attention to renewal terms on longer deployments.

Support runs on email, help centre and community. Routine questions go through the help centre, deeper questions through the community, and account matters by email. There is no live chat or phone line listed, so urgent issues need planning.

Backups follow a fixed cycle: Backups every 24h, retained for 1 day. If your data has to survive longer than that window, keep your own copies off the platform and treat the built in backups as short term cover only.

Aiven lists ClickHouse among Kafka, PostgreSQL and OpenSearch, so the same engine can run inside a bundle with Kafka, PostgreSQL and OpenSearch. Choose ClickHouse Cloud when analytics is the main workload, and Aiven when several engines need to sit under one account.

DeployCue lists 3 alternatives here: UCloud, Aiven and Heroku. They are compared on entry price, database engines and free tier, so the trade offs between them can be read side by side before you choose.