> ## Documentation Index
> Fetch the complete documentation index at: https://docs.risingwave.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ

> Frequently asked questions about RisingWave: when to use it, comparisons with Flink and OLAP databases, memory management, and performance.

Find answers to commonly asked questions about RisingWave, the PostgreSQL-compatible streaming database for real-time data processing.

<Columns cols={2}>
  <Card title="When to use RisingWave" icon="lightbulb" href="/faq/faq-when-to-use-risingwave">
    Learn when RisingWave is the right choice — including comparisons with Apache Flink, ksqlDB, and OLAP databases like ClickHouse.
  </Card>

  <Card title="Using RisingWave" icon="gears" href="/faq/faq-using-risingwave">
    Get answers about memory management, CREATE MATERIALIZED VIEW performance, reserved memory configuration, and resource usage.
  </Card>
</Columns>

Can't find what you're looking for? Ask in the [#ask-ai channel](https://risingwave-community.slack.com/archives/C06R8DA3DGT) of our [Community Slack](https://www.risingwave.com/slack). Our AI assistant provides answers based on RisingWave's documentation, codebase, and community discussions.