要解决AppEngine标准版和Memorystore之间的连接问题，您可以按照以下步骤进行：

1. 配置Memorystore实例：在Google Cloud Console中创建一个Memorystore实例，并记下实例的连接名称和端口号。

2. 在AppEngine应用程序中添加依赖项：在您的AppEngine应用程序的pom.xml（如果使用Java）或requirements.txt（如果使用Python）文件中添加Memorystore客户端库的依赖项。

Java示例（Maven）：

  com.google.cloud
  google-cloud-redis
  VERSION

Python示例（requirements.txt）：

google-cloud-redis==VERSION

3. 在AppEngine应用程序中创建连接到Memorystore的代码：根据您的应用程序所使用的编程语言，您可以使用以下示例代码来连接到Memorystore。

Java示例：

import com.google.cloud.redis.v1.CloudRedisClient;
import com.google.cloud.redis.v1.InstanceName;
import com.google.protobuf.ByteString;

public class MemorystoreConnector {

  public static void main(String[] args) throws IOException {
    String projectId = "your-project-id";
    String instanceId = "your-instance-id";
    String locationId = "your-location-id";
    String redisHost = String.format("%s-redis.googleapis.com", locationId);
    int redisPort = 6379;

    try (CloudRedisClient redisClient = CloudRedisClient.create()) {
      InstanceName instanceName = InstanceName.of(projectId, locationId, instanceId);
      String password = "your-redis-password";

      ByteString auth = ByteString.copyFromUtf8(password);
      ByteString host = ByteString.copyFromUtf8(redisHost);
      String formattedAuth = String.format("auth %s", auth.toStringUtf8());
      String formattedHost = String.format("host %s", host.toStringUtf8());

      redisClient.getInstance(instanceName).getConnectMode(); // Perform Redis operations using redisClient
    }
  }
}

Python示例：

from google.cloud import redis_v1
from google.cloud.redis_v1.types import Instance

def connect_to_memorystore():
    project_id = "your-project-id"
    instance_id = "your-instance-id"
    location_id = "your-location-id"
    
    client = redis_v1.CloudRedisClient()
    instance = Instance(project=project_id, location_id=location_id, instance_id=instance_id)
    redis_host = f"{location_id}-redis.googleapis.com"
    redis_port = 6379
    password = "your-redis-password"
    
    # Connect to Memorystore
    response = client.get_instance(name=instance.name)
    
    # Perform Redis operations using client
    
    client.close()

if __name__ == "__main__":
    connect_to_memorystore()

请确保将上述代码示例中的your-project-id、your-instance-id、your-location-id和your-redis-password替换为您自己的实际值。

这样，您就可以使用这些代码示例连接到AppEngine标准版和Memorystore。