Data saving mode

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using LaunchDarkly.Sdk.Server;
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var config = Configuration.Builder("YOUR_SDK_KEY")
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    .DataSystem(Components.DataSystem().Default())
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    .Build();
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var client = new LdClient(config);

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using LaunchDarkly.Sdk.Server;
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using LaunchDarkly.Sdk.Server.Integrations;
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var relayUri = new Uri("http://my-relay-proxy:8030");
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var relayEndpoints = Components.ServiceEndpoints().RelayProxy(relayUri);
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var config = Configuration.Builder("YOUR_SDK_KEY")
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    .DataSystem(
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        Components.DataSystem().Custom()
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            .Initializers(
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                DataSystemComponents.Polling()
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                    .ServiceEndpointsOverride(relayEndpoints),
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                DataSystemComponents.Polling()
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            )
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            .Synchronizers(
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                DataSystemComponents.Streaming()
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                    .ServiceEndpointsOverride(relayEndpoints),
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                DataSystemComponents.Streaming(),
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                DataSystemComponents.Polling()
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            )
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    )
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    .Build();
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var client = new LdClient(config);

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using LaunchDarkly.Sdk.Server;
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using LaunchDarkly.Sdk.Server.Integrations;
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var config = Configuration.Builder("YOUR_SDK_KEY")
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    .DataSystem(
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        Components.DataSystem().Custom()
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            .Initializers(
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                FileData.DataSource().FilePaths("flags.json"),
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                DataSystemComponents.Polling()
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            )
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            .Synchronizers(
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                DataSystemComponents.Streaming(),
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                DataSystemComponents.Polling()
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            )
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    )
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    .Build();
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var client = new LdClient(config);

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import (
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    "github.com/launchdarkly/go-sdk-common/v3/ldcontext"
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    ld "github.com/launchdarkly/go-server-sdk/v7"
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    "github.com/launchdarkly/go-server-sdk/v7/ldcomponents"
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)
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var config ld.Config
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config.DataSystem = ldcomponents.DataSystem().Default()
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client, _ := ld.MakeCustomClient("YOUR_SDK_KEY", config, 5*time.Second)

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import (
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    ld "github.com/launchdarkly/go-server-sdk/v7"
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    "github.com/launchdarkly/go-server-sdk/v7/ldcomponents"
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)
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var config ld.Config
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relayURI := "http://my-relay-proxy:8030"
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config.DataSystem = ldcomponents.DataSystem().Custom().
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    Initializers(
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        ldcomponents.PollingDataSourceV2().BaseURI(relayURI).AsInitializer(),
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        ldcomponents.PollingDataSourceV2().AsInitializer(),
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    ).
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    Synchronizers(
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        ldcomponents.StreamingDataSourceV2().BaseURI(relayURI),
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        ldcomponents.StreamingDataSourceV2(),
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        ldcomponents.PollingDataSourceV2(),
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    )
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client, _ := ld.MakeCustomClient("YOUR_SDK_KEY", config, 5*time.Second)

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import (
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    ld "github.com/launchdarkly/go-server-sdk/v7"
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    "github.com/launchdarkly/go-server-sdk/v7/ldcomponents"
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    "github.com/launchdarkly/go-server-sdk/v7/ldfiledatav2"
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)
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var config ld.Config
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config.DataSystem = ldcomponents.DataSystem().Custom().
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    Initializers(
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        ldfiledatav2.DataSource().FilePaths("flags.json").AsInitializer(),
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        ldcomponents.PollingDataSourceV2().AsInitializer(),
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    ).
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    Synchronizers(
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        ldcomponents.StreamingDataSourceV2(),
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        ldcomponents.PollingDataSourceV2(),
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    )
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client, _ := ld.MakeCustomClient("YOUR_SDK_KEY", config, 5*time.Second)

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import com.launchdarkly.sdk.server.*;
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LDConfig config = new LDConfig.Builder()
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    .dataSystem(Components.dataSystem().defaultMode())
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    .build();
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LDClient client = new LDClient("YOUR_SDK_KEY", config);

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import com.launchdarkly.sdk.server.*;
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import com.launchdarkly.sdk.server.integrations.*;
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import java.net.URI;
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URI relayUri = URI.create("http://my-relay-proxy:8030");
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ServiceEndpointsBuilder relayEndpoints = Components.serviceEndpoints().relayProxy(relayUri);
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LDConfig config = new LDConfig.Builder()
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    .dataSystem(
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        Components.dataSystem().custom()
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            .initializers(
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                DataSystemComponents.pollingInitializer()
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                    .serviceEndpointsOverride(relayEndpoints),
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                DataSystemComponents.pollingInitializer()
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            )
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            .synchronizers(
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                DataSystemComponents.streamingSynchronizer()
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                    .serviceEndpointsOverride(relayEndpoints),
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                DataSystemComponents.streamingSynchronizer(),
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                DataSystemComponents.pollingSynchronizer()
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            )
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    )
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    .build();
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LDClient client = new LDClient("YOUR_SDK_KEY", config);

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import com.launchdarkly.sdk.server.*;
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import com.launchdarkly.sdk.server.integrations.*;
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LDConfig config = new LDConfig.Builder()
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    .dataSystem(
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        Components.dataSystem().custom()
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            .initializers(
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                FileData.initializer().filePaths("flags.json"),
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                DataSystemComponents.pollingInitializer()
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            )
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            .synchronizers(
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                DataSystemComponents.streamingSynchronizer(),
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                DataSystemComponents.pollingSynchronizer()
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            )
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    )
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    .build();
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LDClient client = new LDClient("YOUR_SDK_KEY", config);

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const ldClient = LaunchDarkly.init('YOUR_SDK_KEY', {
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  dataSystem: {
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    dataSource: {
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        dataSourceOptionsType: 'standard',
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        // if you use the stream, streamInitialReconnectDelay, or pollInterval options,
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        // these options are now part of the dataSystem options,
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        // and are set within the dataSource option
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    }
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    // if you use the persistentStore or useLDD option,
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    // these options are now part of the dataSystem option
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  }
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});

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const ldClient = LaunchDarkly.init('YOUR_SDK_KEY', {
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  dataSystem: {
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    dataSource: {
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      dataSourceOptionsType: 'custom',
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      initializers: [
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        { type: 'file', paths: ['flags.json'] },
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        { type: 'polling' },
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      ],
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      synchronizers: [
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        { type: 'streaming' },
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        { type: 'polling' },
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      ],
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    }
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  }
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});

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import ldclient
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from ldclient.config import Config
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from ldclient import datasystem
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ldclient.set_config(
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    Config(
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        "YOUR_SDK_KEY",
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        datasystem_config=datasystem.default().build(),
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    )
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)
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client = ldclient.get()

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import ldclient
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from ldclient.config import Config
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from ldclient import datasystem
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relay_uri = "http://my-relay-proxy:8030"
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ldclient.set_config(
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    Config(
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        "YOUR_SDK_KEY",
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        datasystem_config=datasystem.custom()
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            .initializers([
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                datasystem.polling_ds_builder().base_uri(relay_uri),
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                datasystem.polling_ds_builder(),
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            ])
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            .synchronizers(
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                datasystem.streaming_ds_builder().base_uri(relay_uri),
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                datasystem.streaming_ds_builder(),
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                datasystem.polling_ds_builder(),
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            )
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            .build(),
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    )
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)
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client = ldclient.get()

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import ldclient
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from ldclient.config import Config
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from ldclient import datasystem
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ldclient.set_config(
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    Config(
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        "YOUR_SDK_KEY",
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        datasystem_config=datasystem.custom()
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            .initializers([
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                datasystem.file_ds_builder(paths=["flags.json"]),
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                datasystem.polling_ds_builder(),
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            ])
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            .synchronizers(
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                datasystem.streaming_ds_builder(),
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                datasystem.polling_ds_builder(),
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            )
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            .build(),
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    )
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)
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client = ldclient.get()

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require 'ldclient-rb'
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config = LaunchDarkly::Config.new(
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  data_system_config: LaunchDarkly::DataSystem.default.build
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)
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client = LaunchDarkly::LDClient.new("YOUR_SDK_KEY", config)

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require 'ldclient-rb'
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relay_uri = "http://my-relay-proxy:8030"
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config = LaunchDarkly::Config.new(
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  data_system_config: LaunchDarkly::DataSystem.custom
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    .initializers([
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      LaunchDarkly::DataSystem.polling_ds_builder.base_uri(relay_uri),
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      LaunchDarkly::DataSystem.polling_ds_builder,
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    ])
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    .synchronizers([
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      LaunchDarkly::DataSystem.streaming_ds_builder.base_uri(relay_uri),
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      LaunchDarkly::DataSystem.streaming_ds_builder,
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      LaunchDarkly::DataSystem.polling_ds_builder,
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    ])
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    .build
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)
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client = LaunchDarkly::LDClient.new("YOUR_SDK_KEY", config)

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require 'ldclient-rb'
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config = LaunchDarkly::Config.new(
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  data_system_config: LaunchDarkly::DataSystem.custom
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    .initializers([
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      LaunchDarkly::Integrations::FileData.data_source_v2(paths: ['flags.json']),
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      LaunchDarkly::DataSystem.polling_ds_builder,
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    ])
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    .synchronizers([
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      LaunchDarkly::DataSystem.streaming_ds_builder,
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      LaunchDarkly::DataSystem.polling_ds_builder,
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    ])
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    .build
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)
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client = LaunchDarkly::LDClient.new("YOUR_SDK_KEY", config)