Couchbase Client Java

ゝ一世哀愁。 2021-06-24 15:56 319阅读 0赞

javac -cp couchbase-client-1.0.3.jar:spymemcached-2.8.2.jar Main.java  
java -cp .:couchbase-client-1.0.3.jar:spymemcached-2.8.2.jar:jettison-1.1.jar:netty-3.2.0.Final.jar:commons-codec-1.5.jar Main

Java客户端会自动判断数据大小，决定是否启用客户端压缩。跨语言使用可能导致Java存的数据不能被C客户端读取，因此需要关闭客户端压缩。

关闭客户端压缩

SerializingTranscoder st = (SerializingTranscoder)client.getTranscoder();

st.setCompressionThreshold(Integer.*MAX\_VALUE*);

import java.net.URI;
    import java.util.LinkedList;
    import java.util.List;
    import java.util.concurrent.TimeUnit;
    import com.couchbase.client.CouchbaseClient;
    import net.spy.memcached.internal.GetFuture;
    import net.spy.memcached.internal.OperationFuture;
    public class Main {
      public static final int EXP_TIME = 10;
      public static final String KEY = "spoon";
      public static final String VALUE = "Hello World!";
      public static void main(String args[]) {
        // Set the URIs and get a client
        List<URI> uris = new LinkedList<URI>();
        Boolean do_delete = false; // 
        // Connect to localhost or to the appropriate URI
        uris.add(URI.create("http://10.10.135.40:8091/pools"));
        CouchbaseClient client = null;
        try {
          client = new CouchbaseClient(uris, "default", "");
        } catch (Exception e) {
          System.err.println("Error connecting to Couchbase: "
            + e.getMessage());
          System.exit(0);
        }
        // Do an asynchronous set
        OperationFuture<Boolean> setOp = client.set(KEY, EXP_TIME, VALUE);
        // Do a synchrononous get
        Object getObject = client.get(KEY);
        // Do an asynchronous get
        GetFuture getOp = client.asyncGet(KEY);
        // Do an asynchronous delete
        OperationFuture<Boolean> delOp = null;
        if (do_delete) {
          delOp = client.delete(KEY);
        }
        // Shutdown the client
        // client.shutdown(3, TimeUnit.SECONDS);
        // Now we want to see what happened with our data
        // Check to see if our set succeeded
        try {
          if (setOp.get().booleanValue()) {
            System.out.println("Set Succeeded");
          } else {
            System.err.println("Set failed: "
                + setOp.getStatus().getMessage());
          }
        } catch (Exception e) {
          System.err.println("Exception while doing set: "
              + e.getMessage());
        }
        // Print the value from synchronous get
        if (getObject != null) {
          System.out.println("Synchronous Get Suceeded: "
              + (String) getObject);
        } else {
          System.err.println("Synchronous Get failed");
        }
        // Check to see if ayncGet succeeded
        try {
          if ((getObject = getOp.get()) != null) {
            System.out.println("Asynchronous Get Succeeded: "
                + getObject);
          } else {
            System.err.println("Asynchronous Get failed: "
                + getOp.getStatus().getMessage());
          }
        } catch (Exception e) {
          System.err.println("Exception while doing Aynchronous Get: "
              + e.getMessage());
        }
        long startTime = System.currentTimeMillis();
        int count = 10000;
        for(int i = 0; i < count; i++) {
            Object getObjectEx = client.get(KEY);
            if(getObject == null)
                System.err.println("Synchronous Get failed");
        }
        long endTime = System.currentTimeMillis();
        System.out.println("QPS:" + count * 1000 / (endTime - startTime) );
        client.shutdown(3, TimeUnit.SECONDS);
        // Check to see if our delete succeeded
        if (do_delete) {
          try {
            if (delOp.get().booleanValue()) {
              System.out.println("Delete Succeeded");
            } else {
              System.err.println("Delete failed: " + 
                  delOp.getStatus().getMessage());
            }
          } catch (Exception e) {
            System.err.println("Exception while doing delete: "
                + e.getMessage());
          }
        }
      }
    }