# param_get>: Get persistent data from ParamServer and set it as a value of store parameters **param_get>** operator gets a value from a ParamServer and sets it as a value of [store parameters](../concepts.html#export-and-store-parameters) +get_single_value: param_get>: key1: key_of_store_parameter1 +get_multiple_values: param_get>: key2: key_of_store_parameter2 key3: key_of_store_parameter3 +show_gotten_data: sh>: echo '${key_of_store_parameter1} ${key_of_store_parameter2} ${key_of_store_parameter3}' ## System configurations ### Common * **param_server.type (required)**: String of the database type of ParamServer ( `postgresql` or `redis` ) ### When using PostgreSQL * **param_server.host (required)**: String of the host of the ParamServer * **param_server.database (required)**: String of the database name of PostgreSQL * **param_server.user (required)**: String of the user of the ParamServer * **param_server.password (optional)**: String of the password of the ParamServer * **param_server.loginTimeout (optional)**: Seconds in integer. default: 30 * **param_server.socketTimeout (optional)**: Seconds in integer. default: 1800 * **param_server.ssl (optional)**: Boolean. default: false * **param_server.connectionTimeout (optional)**: Seconds in integer. default: 30 * **param_server.idleTimeout (optional)**: Seconds in integer. default: 600 * **param_server.validationTimeout (optional)**: Seconds in integer. default: 5 * **param_server.maximumPoolSize (optional)**: Integer. default: available CPU cores * 32 * **param_server.minimumPoolSize (optional)**: Integer. default: same as param_server.maximumPoolSize ### When using Redis * **param_server.host (required)**: String of the host of the ParamServer * **param_server.password (optional)**: String of the password of the ParamServer * **param_server.ssl (optional)**: The boolean flag of whether connection with SSL or not SSL. The Default value is `false` ## Options * **{key}: {destKey}** {key}: The name of the key which you want to get from ParamServer {destKey}: The name of the key which you want to set the value gotten from ParamServer to ParamStore