GridGain 8.7.27 Release Notes

public class FooService implements Service {
    // Service interface omitted
    public int addOne(int x) {
        return x + 1;
    }
}

...

ignite.services().deployNodeSingleton("foo", new FooService());

public interface FooService {
    int addOne(int x);
}

...

FooService svc = client.services().serviceProxy("foo", FooService.class);
svc.addOne(1);

// Get client and server node count
ClientCluster cluster = client.cluster();

int clients = cluster.forClients().nodes().size();
int servers = cluster.forServers().nodes().size();

// List all nodes with start time and CPU count
Collection<ClusterNode> nodes = cluster.nodes();
for (ClusterNode node : nodes) {
    ClusterMetrics metrics = node.metrics();

    System.out.println(
            "Node " + node.id() +
            " started at " + metrics.getNodeStartTime() +
            ", CPUs: " + metrics.getTotalCpus());
}

// Activate the cluster
client.cluster().state(ClusterState.ACTIVE);

// Enable WAL for Person cache
client.cluster().enableWal("Person");

// Get server nodes with user attribute "foo" set to "bar"
ClientClusterGroup clusterGroup = client.cluster()
    .forServers()
    .forAttribute("foo", "bar");

// Invoke "MyTask" compute task using only the nodes from the specified cluster group
client.compute(clusterGroup).execute("org.foo.bar.MyTask", null);

// Invoke "my-service" service method using only the nodes from the specified cluster group
client.services(clusterGroup).serviceProxy("my-service", MyService.class).fooBar();

public class FooService : IService {
    // Service interface omitted
    public int AddOne(int x) => x + 1;
}

...

ignite.GetServices().DeployNodeSingleton("foo", new FooService());

public interface IFooService {
    int AddOne(int x);
}

...

IFooService svc = client.GetServices().GetServiceProxy<IFooService>("foo");
svc.AddOne(1);