# Configure Refiner

Transformer’s Caplin Refiner blade has default configuration settings, so once you’ve [deployed](transformer-deploy-the-refiner-service-module.md) it, it should work without further configuration. However, you can modify Caplin Refiner’s configuration properties if required; for example, to improve filtering and sorting performance. To do this:

* Open the file `<Framework-root>/global_config/overrides/RefinerService/Transformer/etc/refiner.properties`

  (`<Framework-root>` is the topmost directory of the [Deployment Framework](../deployment-framework/index.md).)
* Add configuration property values to the file from the set listed in [Refiner configuration properties](transformer-refiner-configuration-properties.md).

  The format of a property is a dot-separated property name with an associated value, like this:

  ```
  property.name1[.name2][.name3]...=value
  ```

  For example:

  ```
  batch.time=100
  log.file.count=3
  ```

---

**See also:**

* [Refiner overview](transformer-refiner-overview.md)
* [Refiner configuration properties](transformer-refiner-configuration-properties.md)
* [Configure sorting and filtering](../../caplin-trader/4/grid/grid-configure-sorting-and-filtering.md) (in Caplin Trader 4 grids).
* [Deploy the Refiner Service Module](transformer-deploy-the-refiner-service-module.md)
* [Implement custom sorting and filtering in Refiner](transformer-implement-custom-sorting-and-filtering-in-refiner.md)
* [Access Refiner through StreamLink](transformer-access-refiner-through-streamlink.md)
* [Set Refiner user permissions and subject mappings](transformer-permissions-and-subject-mappings-for-filtered-containers.md)
* [Refiner subject syntax](transformer-refiner-filtering-and-sorting-rules.md)