[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],[],null,["# Class AppEngineDataStoreFactory (2.0.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.0.0 (latest)](/java/docs/reference/google-http-client/latest/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.47.1](/java/docs/reference/google-http-client/1.47.1/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.46.3](/java/docs/reference/google-http-client/1.46.3/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.45.3](/java/docs/reference/google-http-client/1.45.3/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.44.2](/java/docs/reference/google-http-client/1.44.2/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.43.2](/java/docs/reference/google-http-client/1.43.2/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.42.3](/java/docs/reference/google-http-client/1.42.3/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory)\n- [1.41.8](/java/docs/reference/google-http-client/1.41.8/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory) \n\n public class AppEngineDataStoreFactory extends AbstractDataStoreFactory\n\nThread-safe Google App Engine implementation of a data store factory that directly uses the App\nEngine Data Store API.\n\nFor convenience, a default global instance is provided in [#getDefaultInstance()](/java/docs/reference/google-http-client/latest/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory#com_google_api_client_extensions_appengine_datastore_AppEngineDataStoreFactory_getDefaultInstance__).\n\nBy default, it uses the Memcache API as an in-memory data cache. To disable it, call Builder#setDisableMemcache(boolean). The Memcache is only read to check if a key already has a\nvalue inside [DataStore#get(String)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_get_java_lang_String_). The values in the Memcache are updated in the [DataStore#get(String)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_get_java_lang_String_), [DataStore#set(String, Serializable)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_set_), [DataStore#delete(String)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_delete_java_lang_String_), [DataStore#values()](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_values__), and [DataStore#clear()](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_clear__) methods. \n\nInheritance\n-----------\n\n[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e [AbstractDataStoreFactory](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStoreFactory) \\\u003e AppEngineDataStoreFactory \n\nInherited Members\n-----------------\n\n[AbstractDataStoreFactory.\\\u003cV\\\u003ecreateDataStore(String)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStoreFactory#com_google_api_client_util_store_AbstractDataStoreFactory__V_createDataStore_java_lang_String_) \n[AbstractDataStoreFactory.\\\u003cV\\\u003egetDataStore(String)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStoreFactory#com_google_api_client_util_store_AbstractDataStoreFactory__V_getDataStore_java_lang_String_) \n[Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) \n[Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) \n[Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)\n\nStatic Methods\n--------------\n\n### getDefaultInstance()\n\n public static AppEngineDataStoreFactory getDefaultInstance()\n\nReturns a global thread-safe instance based on the default constructor [#AppEngineDataStoreFactory()](/java/docs/reference/google-http-client/latest/com.google.api.client.extensions.appengine.datastore.AppEngineDataStoreFactory#com_google_api_client_extensions_appengine_datastore_AppEngineDataStoreFactory_AppEngineDataStoreFactory__).\n\nConstructors\n------------\n\n### AppEngineDataStoreFactory()\n\n public AppEngineDataStoreFactory()\n\n### AppEngineDataStoreFactory(AppEngineDataStoreFactory.Builder builder)\n\n public AppEngineDataStoreFactory(AppEngineDataStoreFactory.Builder builder)\n\nMethods\n-------\n\n### \\\u003cV\\\u003ecreateDataStore(String id)\n\n protected DataStore\u003cV\u003e \u003cV\u003ecreateDataStore(String id)\n\nReturns a new instance of a type-specific data store based on the given unique ID.\n\nThe [DataStore#getId()](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.DataStore#com_google_api_client_util_store_DataStore_getId__) must match the `id` parameter from this method.\n\n**Overrides** \n[AbstractDataStoreFactory.\\\u003cV\\\u003ecreateDataStore(String id)](/java/docs/reference/google-http-client/latest/com.google.api.client.util.store.AbstractDataStoreFactory#com_google_api_client_util_store_AbstractDataStoreFactory__V_createDataStore_java_lang_String_)\n\n### getDisableMemcache()\n\n public boolean getDisableMemcache()\n\nReturns whether to disable the memcache (which is enabled by default)."]]
