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name azure-appconfiguration-java description Azure App Configuration SDK for Java. Centralized application configuration management with key-value settings, feature flags, and snapshots. type skill created 2026-02-27T00:00:00.000Z domain cloud-infrastructure category azure risk unknown source community tags ["skill","cloud-infrastructure","azure","appconfiguration"]
Azure App Configuration SDK for Java
Client library for Azure App Configuration, a managed service for centralizing application configurations.
Installation
<dependency >
<groupId > com.azure</groupId >
<artifactId > azure-data-appconfiguration</artifactId >
<version > 1.8.0</version >
</dependency >
Or use Azure SDK BOM:
<dependencyManagement >
<dependencies >
<dependency >
<groupId > com.azure</groupId >
<artifactId > azure-sdk-bom</artifactId >
<version > {bom_version}</version >
<type > pom</type >
<scope > import</scope >
</dependency >
</dependencies >
</dependencyManagement >
<dependencies >
<dependency >
<groupId > com.azure</groupId >
<artifactId >
</artifactId >
</dependency >
</dependencies >
Prerequisites
Azure App Configuration store
Connection string or Entra ID credentials
Environment Variables AZURE_APPCONFIG_CONNECTION_STRING=Endpoint=https://<store>.azconfig.io;Id=<id >;Secret=<secret>
AZURE_APPCONFIG_ENDPOINT=https://<store>.azconfig.io
Client Creation
With Connection String import com.azure.data.appconfiguration.ConfigurationClient;
import com.azure.data.appconfiguration.ConfigurationClientBuilder;
ConfigurationClient configClient = new ConfigurationClientBuilder ()
.connectionString(System.getenv("AZURE_APPCONFIG_CONNECTION_STRING" ))
.buildClient();
Async Client import com.azure.data.appconfiguration.ConfigurationAsyncClient;
ConfigurationAsyncClient asyncClient = new ConfigurationClientBuilder ()
.connectionString(connectionString)
.buildAsyncClient();
With Entra ID (Recommended) import com.azure.identity.DefaultAzureCredentialBuilder;
ConfigurationClient configClient = new ConfigurationClientBuilder ()
.credential(new DefaultAzureCredentialBuilder ().build())
.endpoint(System.getenv("AZURE_APPCONFIG_ENDPOINT" ))
.buildClient();
Key Concepts Concept Description Configuration Setting Key-value pair with optional label Label Dimension for separating settings (e.g., environments) Feature Flag Special setting for feature management Secret Reference Setting pointing to Key Vault secret Snapshot Point-in-time immutable view of settings
Configuration Setting Operations
Create Setting (Add) Creates only if setting doesn't exist:
import com.azure.data.appconfiguration.models.ConfigurationSetting;
ConfigurationSetting setting = configClient.addConfigurationSetting(
"app/database/connection" ,
"Production" ,
"Server=prod.db.com;Database=myapp"
);
Create or Update Setting (Set) ConfigurationSetting setting = configClient.setConfigurationSetting(
"app/cache/enabled" ,
"Production" ,
"true"
);
Get Setting ConfigurationSetting setting = configClient.getConfigurationSetting(
"app/database/connection" ,
"Production"
);
System.out.println("Value: " + setting.getValue());
System.out.println("Content-Type: " + setting.getContentType());
System.out.println("Last Modified: " + setting.getLastModified());
Conditional Get (If Changed) import com.azure.core.http.rest.Response;
import com.azure.core.util.Context;
Response<ConfigurationSetting> response = configClient.getConfigurationSettingWithResponse(
setting,
null ,
true ,
Context.NONE
);
if (response.getStatusCode() == 304 ) {
System.out.println("Setting not modified" );
} else {
ConfigurationSetting updated = response.getValue();
}
Update Setting ConfigurationSetting updated = configClient.setConfigurationSetting(
"app/cache/enabled" ,
"Production" ,
"false"
);
Conditional Update (If Unchanged)
Response<ConfigurationSetting> response = configClient.setConfigurationSettingWithResponse(
setting,
true ,
Context.NONE
);
Delete Setting ConfigurationSetting deleted = configClient.deleteConfigurationSetting(
"app/cache/enabled" ,
"Production"
);
Conditional Delete Response<ConfigurationSetting> response = configClient.deleteConfigurationSettingWithResponse(
setting,
true ,
Context.NONE
);
List and Filter Settings
List by Key Pattern import com.azure.data.appconfiguration.models.SettingSelector;
import com.azure.core.http.rest.PagedIterable;
SettingSelector selector = new SettingSelector ()
.setKeyFilter("app/*" );
PagedIterable<ConfigurationSetting> settings = configClient.listConfigurationSettings(selector);
for (ConfigurationSetting s : settings) {
System.out.println(s.getKey() + " = " + s.getValue());
}
List by Label SettingSelector selector = new SettingSelector ()
.setKeyFilter("*" )
.setLabelFilter("Production" );
PagedIterable<ConfigurationSetting> settings = configClient.listConfigurationSettings(selector);
List by Multiple Keys SettingSelector selector = new SettingSelector ()
.setKeyFilter("app/database/*,app/cache/*" );
PagedIterable<ConfigurationSetting> settings = configClient.listConfigurationSettings(selector);
List Revisions SettingSelector selector = new SettingSelector ()
.setKeyFilter("app/database/connection" );
PagedIterable<ConfigurationSetting> revisions = configClient.listRevisions(selector);
for (ConfigurationSetting revision : revisions) {
System.out.println("Value: " + revision.getValue() + ", Modified: " + revision.getLastModified());
}
Feature Flags
Create Feature Flag import com.azure.data.appconfiguration.models.FeatureFlagConfigurationSetting;
import com.azure.data.appconfiguration.models.FeatureFlagFilter;
import java.util.Arrays;
FeatureFlagFilter percentageFilter = new FeatureFlagFilter ("Microsoft.Percentage" )
.addParameter("Value" , 50 );
FeatureFlagConfigurationSetting featureFlag = new FeatureFlagConfigurationSetting ("beta-feature" , true )
.setDescription("Beta feature rollout" )
.setClientFilters(Arrays.asList(percentageFilter));
FeatureFlagConfigurationSetting created = (FeatureFlagConfigurationSetting)
configClient.addConfigurationSetting(featureFlag);
Get Feature Flag FeatureFlagConfigurationSetting flag = (FeatureFlagConfigurationSetting)
configClient.getConfigurationSetting(featureFlag);
System.out.println("Feature: " + flag.getFeatureId());
System.out.println("Enabled: " + flag.isEnabled());
System.out.println("Filters: " + flag.getClientFilters());
Update Feature Flag featureFlag.setEnabled(false );
FeatureFlagConfigurationSetting updated = (FeatureFlagConfigurationSetting)
configClient.setConfigurationSetting(featureFlag);
Secret References
Create Secret Reference import com.azure.data.appconfiguration.models.SecretReferenceConfigurationSetting;
SecretReferenceConfigurationSetting secretRef = new SecretReferenceConfigurationSetting (
"app/secrets/api-key" ,
"https://myvault.vault.azure.net/secrets/api-key"
);
SecretReferenceConfigurationSetting created = (SecretReferenceConfigurationSetting)
configClient.addConfigurationSetting(secretRef);
Get Secret Reference SecretReferenceConfigurationSetting ref = (SecretReferenceConfigurationSetting)
configClient.getConfigurationSetting(secretRef);
System.out.println("Secret URI: " + ref.getSecretId());
Read-Only Settings
Set Read-Only ConfigurationSetting readOnly = configClient.setReadOnly(
"app/critical/setting" ,
"Production" ,
true
);
Clear Read-Only ConfigurationSetting writable = configClient.setReadOnly(
"app/critical/setting" ,
"Production" ,
false
);
Snapshots
Create Snapshot import com.azure.data.appconfiguration.models.ConfigurationSnapshot;
import com.azure.data.appconfiguration.models.ConfigurationSettingsFilter;
import com.azure.core.util.polling.SyncPoller;
import com.azure.core.util.polling.PollOperationDetails;
List<ConfigurationSettingsFilter> filters = new ArrayList <>();
filters.add(new ConfigurationSettingsFilter ("app/*" ));
SyncPoller<PollOperationDetails, ConfigurationSnapshot> poller = configClient.beginCreateSnapshot(
"release-v1.0" ,
new ConfigurationSnapshot (filters),
Context.NONE
);
poller.setPollInterval(Duration.ofSeconds(10 ));
poller.waitForCompletion();
ConfigurationSnapshot snapshot = poller.getFinalResult();
System.out.println("Snapshot: " + snapshot.getName() + ", Status: " + snapshot.getStatus());
Get Snapshot ConfigurationSnapshot snapshot = configClient.getSnapshot("release-v1.0" );
System.out.println("Created: " + snapshot.getCreatedAt());
System.out.println("Items: " + snapshot.getItemCount());
List Settings in Snapshot PagedIterable<ConfigurationSetting> settings =
configClient.listConfigurationSettingsForSnapshot("release-v1.0" );
for (ConfigurationSetting setting : settings) {
System.out.println(setting.getKey() + " = " + setting.getValue());
}
Archive Snapshot ConfigurationSnapshot archived = configClient.archiveSnapshot("release-v1.0" );
System.out.println("Status: " + archived.getStatus());
Recover Snapshot ConfigurationSnapshot recovered = configClient.recoverSnapshot("release-v1.0" );
System.out.println("Status: " + recovered.getStatus());
List All Snapshots import com.azure.data.appconfiguration.models.SnapshotSelector;
SnapshotSelector selector = new SnapshotSelector ().setNameFilter("release-*" );
PagedIterable<ConfigurationSnapshot> snapshots = configClient.listSnapshots(selector);
for (ConfigurationSnapshot snap : snapshots) {
System.out.println(snap.getName() + " - " + snap.getStatus());
}
Labels
List Labels import com.azure.data.appconfiguration.models.SettingLabelSelector;
configClient.listLabels(new SettingLabelSelector ().setNameFilter("*" ))
.forEach(label -> System.out.println("Label: " + label.getName()));
Async Operations ConfigurationAsyncClient asyncClient = new ConfigurationClientBuilder ()
.connectionString(connectionString)
.buildAsyncClient();
asyncClient.listConfigurationSettings(new SettingSelector ().setLabelFilter("Production" ))
.subscribe(
setting -> System.out.println(setting.getKey() + " = " + setting.getValue()),
error -> System.err.println("Error: " + error.getMessage()),
() -> System.out.println("Completed" )
);
Error Handling import com.azure.core.exception.HttpResponseException;
try {
configClient.getConfigurationSetting("nonexistent" , null );
} catch (HttpResponseException e) {
if (e.getResponse().getStatusCode() == 404 ) {
System.err.println("Setting not found" );
} else {
System.err.println("Error: " + e.getMessage());
}
}
Best Practices
Use labels — Separate configurations by environment (Dev, Staging, Production)Use snapshots — Create immutable snapshots for releasesFeature flags — Use for gradual rollouts and A/B testingSecret references — Store sensitive values in Key VaultConditional requests — Use ETags for optimistic concurrencyRead-only protection — Lock critical production settingsUse Entra ID — Preferred over connection stringsAsync client — Use for high-throughput scenarios
Reference Links
When to Use This skill is applicable to execute the workflow or actions described in the overview.
Connections
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