1 of 6

Online stores

Please see for an explanation of online stores.

SQLite

Description

The online store provides support for materializing feature values into an SQLite database for serving online features.

All feature values are stored in an on-disk SQLite database
Only the latest feature values are persisted

Example

Configuration options are available .

Redis

Description

The online store provides support for materializing feature values into Redis.

Both Redis and Redis Cluster are supported
The data model used to store feature values in Redis is described in more detail .

Examples

Connecting to a single Redis instance

Connecting to a Redis Cluster with SSL enabled and password authentication

Datastore

Description

The Datastore online store provides support for materializing feature values into Cloud Datastore. The data model used to store feature values in Datastore is described in more detail here.

Example

feature_store.yaml

project: my_feature_repo
registry: data/registry.db
provider: gcp
online_store:
  type: datastore
  project_id: my_gcp_project
  namespace: my_datastore_namespace

Configuration options are available here.

DynamoDB

Description

The online store provides support for materializing feature values into AWS DynamoDB.

Example

Configuration options are available .

Permissions

Feast requires the following permissions in order to execute commands for DynamoDB online store:

The following inline policy can be used to grant Feast the necessary permissions:

PostgreSQL (contrib)

Description

The PostgreSQL online store provides support for materializing feature values into a PostgreSQL database for serving online features.

Only the latest feature values are persisted
sslmode, sslkey_path, sslcert_path, and sslrootcert_path are optional

Example

feature_store.yaml

project: my_feature_repo
registry: data/registry.db
provider: local
online_store:
    type: postgres
    host: DB_HOST
    port: DB_PORT
    database: DB_NAME
    db_schema: DB_SCHEMA
    user: DB_USERNAME
    password: DB_PASSWORD
    sslmode: verify-ca
    sslkey_path: /path/to/client-key.pem
    sslcert_path: /path/to/client-cert.pem
    sslrootcert_path: /path/to/server-ca.pem

Configuration options are available here.

DynamoDB

Description

The online store provides support for materializing feature values into AWS DynamoDB.

Example

Configuration options are available .

Permissions

Feast requires the following permissions in order to execute commands for DynamoDB online store:

The following inline policy can be used to grant Feast the necessary permissions:

{
    "Statement": [
        {
            "Action": [
                "dynamodb:CreateTable",
                "dynamodb:DescribeTable",
                "dynamodb:DeleteTable",
                "dynamodb:BatchWriteItem",
                "dynamodb:BatchGetItem"
            ],
            "Effect": "Allow",
            "Resource": [
                "arn:aws:dynamodb:<region>:<account_id>:table/*"
            ]
        }
    ],
    "Version": "2012-10-17"
}

Lastly, this IAM role needs to be associated with the desired Redshift cluster. Please follow the official AWS guide for the necessary steps .

PostgreSQL (contrib)

Description

The PostgreSQL online store provides support for materializing feature values into a PostgreSQL database for serving online features.

Only the latest feature values are persisted
sslmode, sslkey_path, sslcert_path, and sslrootcert_path are optional

Example

feature_store.yaml

project: my_feature_repo
registry: data/registry.db
provider: local
online_store:
    type: postgres
    host: DB_HOST
    port: DB_PORT
    database: DB_NAME
    db_schema: DB_SCHEMA
    user: DB_USERNAME
    password: DB_PASSWORD
    sslmode: verify-ca
    sslkey_path: /path/to/client-key.pem
    sslcert_path: /path/to/client-cert.pem
    sslrootcert_path: /path/to/server-ca.pem

Configuration options are available here.