{"data":{"slug":"risingwave","name":"RisingWave","tagline":"Apache-2.0 streaming database for fresh, queryable data","category":"databases","categoryName":"Databases","url":"https://risingwave.com","github":"https://github.com/risingwavelabs/risingwave","pricing":"open-source","hook":"RisingWave is an event streaming database: it ingests from database CDC, Kafka-style streams and webhooks, keeps materialized views up to date incrementally, and serves fresh results with Postgres-compatible SQL.","whatsGood":"Apache-2.0 (risingwavelabs/risingwave), release v3.1.0 (2026-09-21), written in Rust. It aims to replace the Debezium + Kafka + Flink + serving DB chain with one system: native CDC from Postgres and MySQL, ingestion from Kafka, Pulsar and Kinesis, batch loads from S3, and streaming SQL with materialized views. Docker and Kubernetes quick starts. ★~9.4k.","theCatch":"Streaming SQL is a different mental model from batch: state size, watermarks and view design decide your costs. A cluster has several components and uses object storage for state. The project's marketing leans on agentic AI; the core value is incremental views, not AI. RisingWave Cloud is the commercial option.","verdict":"A real Flink alternative you can write in SQL — great for live dashboards and alerts.","addedAt":"2026-10-18","featured":false,"domain":"Databases","subSpecialty":"Data","subcategory":"Streaming & CDC","tags":["self-host","permissive","postgres","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"Apache-2.0","githubStars":9376,"starsPerWeek":38,"access":"free","archived":false,"repo":{"createdAt":"2022-01-28","pushedAt":"2026-10-19","license":"Apache-2.0","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"supabase","name":"Supabase","tagline":"Open-source Firebase alternative built on Postgres"},{"slug":"turso","name":"Turso","tagline":"SQLite at the edge with libSQL"},{"slug":"redis","name":"Redis","tagline":"The in-memory data store everyone uses"},{"slug":"upstash","name":"Upstash","tagline":"Serverless Redis and Kafka"},{"slug":"pinecone","name":"Pinecone","tagline":"Vector database for AI applications"}],"links":{"self":"/api/gems/risingwave","html":"/gems/risingwave","markdown":"/gems/risingwave.md","category":"/api/gems?category=databases","categoryPage":"/stacks/databases"}}