Feldera is an incremental view maintenance engine that keeps SQL views aligned with changing data alongside a lakehouse or warehouse. Instead of rebuilding a full dataset after each input change, it updates views in proportion to the changes. It supports SQL window functions and recursive queries. Documented inputs include Kafka, Google Pub/Sub, NATS, PostgreSQL, AWS S3, Delta Lake, and Apache Iceberg. Outputs include Kafka, Delta Lake, PostgreSQL, Redis, DynamoDB, Snowflake, and Iceberg, though several output connectors are marked experimental. The free open-source edition is a single-node, single-container deployment with full SQL support, all connectors, datasets larger than memory, and community support through Slack. Docker is available for local development, testing, and prototyping, alongside a free online sandbox. The enterprise edition runs on a customer-provided cloud or Kubernetes cluster and adds multi-node deployments, fault tolerance, resource isolation, and dedicated support. Its documentation says enterprise data stays on the customer's premises. Enterprise pricing is custom, and pipeline scale-out is listed as coming soon.
Who it is for
Feldera may suit teams that need to keep SQL views current as source data changes. Its deployment options include local Docker use, an online sandbox, and enterprise hosting on customer-provided infrastructure.
What is good
- Free edition includes full SQL support and all connectors
- Incremental updates are proportional to input changes
- Enterprise runs on customer-provided cloud or Kubernetes
- Use cases include fraud detection feature engineering
What to know first
- Several output connectors are marked experimental
- Enterprise pricing is custom
- Pipeline scale-out is listed as coming soon
Verdict
Feldera offers a free single-node edition and an enterprise option with multi-node deployments and dedicated support. Check connector status and the deployment requirements for the edition you need.
Feldera plans and pricing
All plansCompared on streaming analytics software
- Free plan
- Yes
- Stateful processing
- Yes
- Supported languages
- SQL
