# Reference

- [Codebase Structure](https://docs.feast.dev/reference/codebase-structure.md)
- [Type System](https://docs.feast.dev/reference/type-system.md)
- [Data sources](https://docs.feast.dev/reference/data-sources.md)
- [Overview](https://docs.feast.dev/reference/data-sources/overview.md)
- [Table formats](https://docs.feast.dev/reference/data-sources/table-formats.md)
- [File](https://docs.feast.dev/reference/data-sources/file.md)
- [Snowflake](https://docs.feast.dev/reference/data-sources/snowflake.md)
- [BigQuery](https://docs.feast.dev/reference/data-sources/bigquery.md)
- [Redshift](https://docs.feast.dev/reference/data-sources/redshift.md)
- [Push](https://docs.feast.dev/reference/data-sources/push.md)
- [Kafka](https://docs.feast.dev/reference/data-sources/kafka.md)
- [Kinesis](https://docs.feast.dev/reference/data-sources/kinesis.md)
- [Spark (contrib)](https://docs.feast.dev/reference/data-sources/spark.md)
- [PostgreSQL (contrib)](https://docs.feast.dev/reference/data-sources/postgres.md)
- [Trino (contrib)](https://docs.feast.dev/reference/data-sources/trino.md)
- [Azure Synapse + Azure SQL (contrib)](https://docs.feast.dev/reference/data-sources/mssql.md)
- [Couchbase (contrib)](https://docs.feast.dev/reference/data-sources/couchbase.md)
- [Oracle (contrib)](https://docs.feast.dev/reference/data-sources/oracle.md)
- [Athena (contrib)](https://docs.feast.dev/reference/data-sources/athena.md)
- [Clickhouse (contrib)](https://docs.feast.dev/reference/data-sources/clickhouse.md)
- [Ray (contrib)](https://docs.feast.dev/reference/data-sources/ray.md)
- [MongoDB (contrib)](https://docs.feast.dev/reference/data-sources/mongodb.md)
- [Offline stores](https://docs.feast.dev/reference/offline-stores.md)
- [Overview](https://docs.feast.dev/reference/offline-stores/overview.md)
- [Dask](https://docs.feast.dev/reference/offline-stores/dask.md)
- [Snowflake](https://docs.feast.dev/reference/offline-stores/snowflake.md)
- [BigQuery](https://docs.feast.dev/reference/offline-stores/bigquery.md)
- [Redshift](https://docs.feast.dev/reference/offline-stores/redshift.md)
- [DuckDB](https://docs.feast.dev/reference/offline-stores/duckdb.md)
- [Couchbase Columnar (contrib)](https://docs.feast.dev/reference/offline-stores/couchbase.md)
- [Spark (contrib)](https://docs.feast.dev/reference/offline-stores/spark.md)
- [PostgreSQL (contrib)](https://docs.feast.dev/reference/offline-stores/postgres.md)
- [Trino (contrib)](https://docs.feast.dev/reference/offline-stores/trino.md)
- [Azure Synapse + Azure SQL (contrib)](https://docs.feast.dev/reference/offline-stores/mssql.md)
- [Clickhouse (contrib)](https://docs.feast.dev/reference/offline-stores/clickhouse.md)
- [Ray (contrib)](https://docs.feast.dev/reference/offline-stores/ray.md)
- [Oracle (contrib)](https://docs.feast.dev/reference/offline-stores/oracle.md)
- [Athena (contrib)](https://docs.feast.dev/reference/offline-stores/athena.md)
- [MongoDB (contrib)](https://docs.feast.dev/reference/offline-stores/mongodb.md)
- [Remote Offline](https://docs.feast.dev/reference/offline-stores/remote-offline-store.md)
- [Hybrid](https://docs.feast.dev/reference/offline-stores/hybrid.md)
- [Online stores](https://docs.feast.dev/reference/online-stores.md)
- [Overview](https://docs.feast.dev/reference/online-stores/overview.md)
- [SQLite](https://docs.feast.dev/reference/online-stores/sqlite.md)
- [Snowflake](https://docs.feast.dev/reference/online-stores/snowflake.md)
- [Redis](https://docs.feast.dev/reference/online-stores/redis.md)
- [Dragonfly](https://docs.feast.dev/reference/online-stores/dragonfly.md)
- [Datastore](https://docs.feast.dev/reference/online-stores/datastore.md)
- [DynamoDB](https://docs.feast.dev/reference/online-stores/dynamodb.md)
- [Bigtable](https://docs.feast.dev/reference/online-stores/bigtable.md)
- [Remote](https://docs.feast.dev/reference/online-stores/remote.md)
- [PostgreSQL](https://docs.feast.dev/reference/online-stores/postgres.md)
- [HBase](https://docs.feast.dev/reference/online-stores/hbase.md)
- [Cassandra + Astra DB](https://docs.feast.dev/reference/online-stores/cassandra.md)
- [Couchbase](https://docs.feast.dev/reference/online-stores/couchbase.md)
- [MySQL](https://docs.feast.dev/reference/online-stores/mysql.md)
- [Hazelcast](https://docs.feast.dev/reference/online-stores/hazelcast.md)
- [ScyllaDB](https://docs.feast.dev/reference/online-stores/scylladb.md)
- [SingleStore](https://docs.feast.dev/reference/online-stores/singlestore.md)
- [Milvus](https://docs.feast.dev/reference/online-stores/milvus.md)
- [MongoDB](https://docs.feast.dev/reference/online-stores/mongodb.md)
- [Elasticsearch](https://docs.feast.dev/reference/online-stores/elasticsearch.md)
- [Qdrant](https://docs.feast.dev/reference/online-stores/qdrant.md)
- [Faiss](https://docs.feast.dev/reference/online-stores/faiss.md)
- [Hybrid](https://docs.feast.dev/reference/online-stores/hybrid.md)
- [Registries](https://docs.feast.dev/reference/registries.md)
- [Local](https://docs.feast.dev/reference/registries/local.md)
- [S3](https://docs.feast.dev/reference/registries/s3.md)
- [GCS](https://docs.feast.dev/reference/registries/gcs.md)
- [SQL](https://docs.feast.dev/reference/registries/sql.md)
- [Snowflake](https://docs.feast.dev/reference/registries/snowflake.md)
- [Remote](https://docs.feast.dev/reference/registries/remote.md)
- [Providers](https://docs.feast.dev/reference/providers.md)
- [Local](https://docs.feast.dev/reference/providers/local.md)
- [Google Cloud Platform](https://docs.feast.dev/reference/providers/google-cloud-platform.md)
- [Amazon Web Services](https://docs.feast.dev/reference/providers/amazon-web-services.md)
- [Azure](https://docs.feast.dev/reference/providers/azure.md)
- [Compute Engines](https://docs.feast.dev/reference/compute-engine.md)
- [Snowflake](https://docs.feast.dev/reference/compute-engine/snowflake.md)
- [AWS Lambda (alpha)](https://docs.feast.dev/reference/compute-engine/lambda.md)
- [Spark (contrib)](https://docs.feast.dev/reference/compute-engine/spark.md)
- [Ray (contrib)](https://docs.feast.dev/reference/compute-engine/ray.md)
- [Feature repository](https://docs.feast.dev/reference/feature-repository.md)
- [feature\_store.yaml](https://docs.feast.dev/reference/feature-repository/feature-store-yaml.md)
- [.feastignore](https://docs.feast.dev/reference/feature-repository/feast-ignore.md)
- [Feature servers](https://docs.feast.dev/reference/feature-servers.md)
- [Python feature server](https://docs.feast.dev/reference/feature-servers/python-feature-server.md)
- [\[Alpha\] Go feature server](https://docs.feast.dev/reference/feature-servers/go-feature-server.md)
- [MCP Feature Server](https://docs.feast.dev/reference/feature-servers/mcp-feature-server.md)
- [Offline Feature Server](https://docs.feast.dev/reference/feature-servers/offline-feature-server.md)
- [Registry server](https://docs.feast.dev/reference/feature-servers/registry-server.md)
- [\[Beta\] Web UI](https://docs.feast.dev/reference/alpha-web-ui.md)
- [\[Beta\] On demand feature view](https://docs.feast.dev/reference/beta-on-demand-feature-view.md)
- [\[Alpha\] Static Artifacts Loading](https://docs.feast.dev/reference/alpha-static-artifacts.md)
- [\[Alpha\] Vector Database](https://docs.feast.dev/reference/alpha-vector-database.md)
- [\[Alpha\] Data quality monitoring](https://docs.feast.dev/reference/dqm.md)
- [\[Alpha\] Streaming feature computation with Denormalized](https://docs.feast.dev/reference/denormalized.md)
- [\[Alpha\] Feature View Versioning](https://docs.feast.dev/reference/alpha-feature-view-versioning.md)
- [OpenLineage Integration](https://docs.feast.dev/reference/openlineage.md)
- [Feast CLI reference](https://docs.feast.dev/reference/feast-cli-commands.md)
- [Usage](https://docs.feast.dev/reference/usage.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.feast.dev/reference.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.