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.event-handler.ttl | 90 d | Duration | The time to live based on create time for the JDBC event handler records. When the config is set as '0', the ttl strategy for the records would be disabled.
##### 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.