Key | Default | Type | Description
--- | --- | --- | ---

##### autoscaler.standalone.control-loop.interval

10 s

Duration

The interval of autoscaler standalone control loop.

##### autoscaler.standalone.control-loop.parallelism

100

Integer

The parallelism of autoscaler standalone control loop.

##### autoscaler.standalone.event-handler.type

LOGGING

Enum

The autoscaler event handler type.
Possible values:

- "LOGGING": The event handler based on logging.
- "JDBC": The event handler which persists all events in JDBC related database. It's recommended in production.

##### autoscaler.standalone.fetcher.flink-cluster.host

"localhost"

String

The host name of flink cluster when the flink-cluster fetcher is used.

##### autoscaler.standalone.fetcher.flink-cluster.port

8081

Integer

The port of flink cluster when the flink-cluster fetcher is used.

##### autoscaler.standalone.jdbc.password-env-variable

"JDBC_PWD"

String

The environment variable name of jdbc password when `autoscaler.standalone.state-store.type` or `autoscaler.standalone.event-handler.type` has been set to `JDBC`. In general, the environment variable name doesn't need to be changed. Users need to export the password using this environment variable.

##### autoscaler.standalone.jdbc.url

(none)

String

The jdbc url when `autoscaler.standalone.state-store.type` or `autoscaler.standalone.event-handler.type` has been set to `JDBC`, such as: `jdbc:mysql://localhost:3306/flink_autoscaler`.
This option is required when using JDBC state store or JDBC event handler.

##### autoscaler.standalone.jdbc.username

(none)

String

The jdbc username when `autoscaler.standalone.state-store.type` or `autoscaler.standalone.event-handler.type` has been set to `JDBC`.

##### autoscaler.standalone.state-store.type

MEMORY

Enum

The autoscaler state store type.
Possible values:

- "MEMORY": The state store based on the Java Heap, the state will be discarded after process restarts.
- "JDBC": The state store which persists its state in JDBC related database. It's recommended in production.