บทช่วยสอน การเชื่อมต่อ Java บริการ Memcached ที่ดีที่สุดในปี 2024 ในบทช่วยสอนนี้ คุณสามารถเรียนรู้ การเชื่อมต่อ Java บริการ Memcached
โปรแกรม Java ที่จะเชื่อมต่อโดยใช้ Memcached คุณต้องเพิ่มแพคเกจขวด Memcached ใน classpath ของคุณ
ขับเคลื่อนแพคเกจขวดดาวน์โหลด: Spymemcached-2.10.3.jar Google Code แพคเกจขวดดาวน์โหลด: Spymemcached-2.10.3.jarขั้นตอนต่อไปสมมติว่าโฮสต์ memcached บริการ 127.0.0.1, 11211 พอร์ต
Java Memcached การเชื่อมต่อ
import net.spy.memcached.MemcachedClient; import java.net.*; public class MemcachedJava { public static void main(String[] args) { try{ // 本地连接 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } }
โปรแกรมที่เราใช้อยู่ IP InetSocketAddress การเชื่อมต่อพอร์ต 127.0.0.1 11211 ของบริการ memcached
ดำเนินการตามรหัสข้างต้นหากการเชื่อมต่อที่ประสบความสำเร็จผลข้อมูลต่อไปนี้:
Connection to server successful.
ข้อมูลต่อไปนี้จะถูกเก็บไว้โดยใช้ java.util.concurrent.Future
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 存储数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 查看存储状态 System.out.println("set status:" + fo.get()); // 输出值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } }
การทำงานของโปรแกรม, ผลลัพธ์คือ:
Connection to server successful. set status:true w3big value in cache - Free Education
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 打印状态 System.out.println("set status:" + fo.get()); // 输出 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 添加 Future fo = mcc.add("w3big", 900, "memcached"); // 打印状态 System.out.println("add status:" + fo.get()); // 添加新key fo = mcc.add("codingground", 900, "All Free Compilers"); // 打印状态 System.out.println("add status:" + fo.get()); // 输出 System.out.println("codingground value in cache - " + mcc.get("codingground")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println(ex.getMessage()); } } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try { //连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加第一个 key=》value 对 Future fo = mcc.set("w3big", 900, "Free Education"); // 输出执行 add 方法后的状态 System.out.println("add status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 添加新的 key fo = mcc.replace("w3big", 900, "Largest Tutorials' Library"); // 输出执行 set 方法后的状态 System.out.println("replace status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 关闭连接 mcc.shutdown(); }catch(Exception ex){ System.out.println( ex.getMessage() ); } } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 对存在的key进行数据添加操作 Future fo = mcc.append("w3big", 900, " for All"); // 输出执行 set 方法后的状态 System.out.println("append status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("codingground")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Education for All"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 对存在的key进行数据添加操作 Future fo = mcc.prepend("w3big", 900, "Free "); // 输出执行 set 方法后的状态 System.out.println("prepend status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("codingground")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.CASValue; import net.spy.memcached.CASResponse; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 使用 get 方法获取数据 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 通过 gets 方法获取 CAS token(令牌) CASValue casValue = mcc.gets("w3big"); // 输出 CAS token(令牌) 值 System.out.println("CAS token - " + casValue); // 尝试使用cas方法来更新数据 CASResponse casresp = mcc.cas("w3big", casValue.getCas(), 900, "Largest Tutorials-Library"); // 输出 CAS 响应信息 System.out.println("CAS Response - " + casresp); // 输出值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 使用 get 方法获取数据 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.CASValue; import net.spy.memcached.CASResponse; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "Free Education"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 从缓存中获取键为 w3big 的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 通过 gets 方法获取 CAS token(令牌) CASValue casValue = mcc.gets("w3big"); // 输出 CAS token(令牌) 值 System.out.println("CAS value in cache - " + casValue); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数据 Future fo = mcc.set("w3big", 900, "World's largest online tutorials library"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("w3big")); // 对存在的key进行数据添加操作 Future fo = mcc.delete("w3big"); // 输出执行 delete 方法后的状态 System.out.println("delete status:" + fo.get()); // 获取键对应的值 System.out.println("w3big value in cache - " + mcc.get("codingground")); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }
import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { try{ // 连接本地的 Memcached 服务 MemcachedClient mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); System.out.println("Connection to server sucessful."); // 添加数字值 Future fo = mcc.set("number", 900, "1000"); // 输出执行 set 方法后的状态 System.out.println("set status:" + fo.get()); // 获取键对应的值 System.out.println("value in cache - " + mcc.get("number")); // 自增并输出 System.out.println("value in cache after increment - " + mcc.incr("number", 111)); // 自减并输出 System.out.println("value in cache after decrement - " + mcc.decr("number", 112)); // 关闭连接 mcc.shutdown(); }catch(Exception ex) System.out.println(ex.getMessage()); } }