---
metadata:
  - name: generator
    content: Diplodoc Platform v5.52.0
alternate:
  - https://ydb.tech/docs/en/recipes/ydb-sdk/balancing-prefer-pile.md
  - https://ydb.tech/docs/ru/recipes/ydb-sdk/balancing-prefer-pile.md
  - href: en/recipes/ydb-sdk/balancing-prefer-pile.md
    type: text/markdown
    title: Markdown version
  - href: ../../llms.txt
    type: text/markdown
    title: llms.txt
sourcePath: en/core/recipes/ydb-sdk/balancing-prefer-pile.md
---
> **Documentation Index:** Fetch the complete configuration index at https://ydb.tech/docs/en/llms.txt

# Prefer a pile with a specific state

Below is example of the code for setting the "prefer pile with a specific state" balancing algorithm in YDB SDK.

If no state is specified when setting the option, the SDK prefers the PRIMARY pile.

This option only makes sense if the cluster is operating in bridge mode. If it is not, the SDK will use [random choice balancing algorithm](https://ydb.tech/docs/en/recipes/ydb-sdk/balancing-random-choice.md).

{% list tabs %}

- Go

  This functionality is not currently supported.

- C++

  ```cpp
  #include <ydb-cpp-sdk/client/driver/driver.h>

  int main() {
    auto connectionString = std::string(std::getenv("YDB_CONNECTION_STRING"));

    auto driverConfig = NYdb::TDriverConfig(connectionString)
      .SetBalancingPolicy(NYdb::TBalancingPolicy::UsePreferablePileState(NYdb::EPileState::PRIMARY));

    NYdb::TDriver driver(driverConfig);
    // ...
    driver.Stop(true);
    return 0;
  }
  ```

- Python

  This functionality is not currently supported.

- JavaScript

  <!-- source: en/_includes/work-in-progress.md -->
  This section is under development.
  <!-- endsource: en/_includes/work-in-progress.md -->

- Java

  This functionality is not currently supported.

- Rust

  <!-- source: en/_includes/feature-not-supported.md -->
  This functionality is not currently supported.
  <!-- endsource: en/_includes/feature-not-supported.md -->

  Track progress or vote for Rust SDK support: [ydb-rs-sdk#491](https://github.com/ydb-platform/ydb-rs-sdk/issues/491)

{% endlist %}