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An idiomatic C++ client library for the Cloud Datastore API. This API accesses the schemaless NoSQL database to provide fully managed, robust, scalable storage for your application.
While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.
QuickstartThe following shows the code that you'll run in the google/cloud/datastore/quickstart/ directory, which should give you a taste of the Cloud Datastore API C++ client library API.
#include "google/cloud/datastore/v1/datastore_client.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " project-id\n";
return 1;
}
namespace datastore = ::google::cloud::datastore_v1;
auto client =
datastore::DatastoreClient(datastore::MakeDatastoreConnection());
auto const* project_id = argv[1];
google::datastore::v1::Key key;
key.mutable_partition_id()->set_project_id(project_id);
auto& path = *key.add_path();
path.set_kind("Task");
path.set_name("sampletask1");
google::datastore::v1::Mutation mutation;
auto& upsert = *mutation.mutable_upsert();
*upsert.mutable_key() = key;
google::datastore::v1::Value value;
value.set_string_value("Buy milk");
upsert.mutable_properties()->insert({"description", std::move(value)});
auto put = client.Commit(
project_id, google::datastore::v1::CommitRequest::NON_TRANSACTIONAL,
{mutation});
if (!put) throw std::move(put).status();
std::cout << "Saved " << key.DebugString() << " " << put->DebugString()
<< "\n";
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
This library offers multiple *Client classes, which are listed below. Each one of these classes exposes all the RPCs for a service as member functions of the class. This library groups multiple services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.
The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the *Client classes when testing your application.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["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 2025-08-14 UTC."],[[["The Cloud Datastore API C++ Client Library provides an idiomatic interface for interacting with the schemaless NoSQL database, offering robust and scalable storage."],["This library is GA, but it's crucial to know that the Google Cloud C++ client libraries do not adhere to Semantic Versioning."],["The `DatastoreClient` classes, such as `datastore_admin_v1::DatastoreAdminClient` and `datastore_v1::DatastoreClient`, expose all the RPCs for their respective services as member functions."],["The library offers several customization options, including overriding the default endpoint, changing authentication credentials, and modifying retry policies."],["The most recent version available, although not GA, is [2.37.0-rc], and there are many previous versions available in the documentation, all the way down to 2.15.1."]]],[]]
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