memcached安裝使用(mac)

1、安裝 memcached

1. 安裝前，能夠先查找一下，看看有沒有：

   brew search memcache

   返回結果:

   libmemcached    memcache-top    memcached   memcacheq

   說明和關鍵字memcache相關的有上面這四個，這樣就確認了，有咱們須要的東西，第一個是客戶端，第三個是服務器。

   先裝服務器：

   brew install memcached

   安裝日誌：

   ==> Installing memcached dependency: libevent
    ==> Downloading https://github.com/downloads/libevent/libevent/libevent-2.0.21-s
    ######################################################################## 100.0%
    ==> ./configure --disable-debug-mode --prefix=/usr/local/Cellar/libevent/2.0.21
    ==> make
    ==> make install
    �  /usr/local/Cellar/libevent/2.0.21: 48 files, 1.8M, built in 84 seconds
    ==> Installing memcached
    ==> Downloading http://memcached.googlecode.com/files/memcached-1.4.15.tar.gz
    ######################################################################## 100.0%
    ==> ./configure --prefix=/usr/local/Cellar/memcached/1.4.15 --disable-coverage
    ==> make install
    ==> Caveats
    To have launchd start memcached at login:
    	ln -sfv /usr/local/opt/memcached/*.plist ~/Library/LaunchAgents
    Then to load memcached now:
    	launchctl load ~/Library/LaunchAgents/homebrew.mxcl.memcached.plist
    Or, if you don't want/need launchctl, you can just run:
    	/usr/local/opt/memcached/bin/memcached
    ==> Summary
    �  /usr/local/Cellar/memcached/1.4.15: 10 files, 176K, built in 8 seconds

   從上面安裝日誌，能夠看出:

   安裝 memcached 前，先安裝了其所依賴的 libevent 庫 下載的libevent和memcached，被安裝到/usr/local/Cellar下面，可是又自動在/usr/local/bin下面創建了軟鏈接，方便使用。 安裝後能夠查看安裝的結果：

   $which memcached
    /usr/local/bin/memcached
   
    $ memcached -h
    memcached 1.4.15

   ... 步驟二：安裝 libmemcached 繼續安裝客戶端庫：

   $ brew install libmemcached
   
    	==> Downloading	
    	https://launchpad.net/libmemcached/1.0/1.0.16/+download/libmemca
    	######################################################################## 100.0%
    	==> ./configure --prefix=/usr/local/Cellar/libmemcached/1.0.16
    	==> make install
    	�  /usr/local/Cellar/libmemcached/1.0.16: 110 files, 1.4M, built in 108 seconds

   步驟三：啓動服務器

   先默認參數啓動吧：

   $ /usr/local/bin/memcached -d

   步驟四：測試 清單 3.

   啓動 memcached

   ./memcached -d -m 2048 -l 10.0.5.103 -p 11211
   
   
    這會以守護程序的形式啓動 memcached（-d），爲其分配 2GB 內存（-m 2048），並指定監聽 localhost，即端口 11211。您能夠根據須要修改這些值，但以上設置足以完成本文中的練習。接下來，您須要鏈接到 memcached。您將使用一個簡單的 telnet 客戶機鏈接到 memcached 服務器。

2、在springboot中使用

1. 由於我使用的是父子maven結構

   父maven配置

   pom.xml

   <?xml version="1.0" encoding="UTF-8"?>
   	<project xmlns="http://maven.apache.org/POM/4.0.0"
   			 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   			 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   		<modelVersion>4.0.0</modelVersion>
   
   		<groupId>tom.heliming.cloud</groupId>
   		<artifactId>cloud-demo</artifactId>
   		<packaging>pom</packaging>
   		<version>1.0-SNAPSHOT</version>
   		<modules>
   			<!--<module>oracle</module>-->
   			<!--<module>mongodb</module>-->
   			<!--<module>okhttp</module>-->
   			<!--<module>netty-demo</module>-->
   			<!--<module>mysqldemo</module>-->
   			<!--<module>rabbitmq</module>-->
   			<module>memcache</module>
   		</modules>
   		<parent>
   			<groupId>org.springframework.boot</groupId>
   			<artifactId>spring-boot-starter-parent</artifactId>
   			<version>2.1.5.RELEASE</version>
   			<relativePath/> <!-- lookup parent from repository -->
   		</parent>
   		<properties>
   			<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   			<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   			<maven.compiler.source>1.8</maven.compiler.source>
   			<maven.compiler.target>1.8</maven.compiler.target>
   			<java.version>1.8</java.version>
   		</properties>
   		<dependencies>
   
   			<!-- Spring Boot相關依賴 -->
   			<dependency>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-starter</artifactId>
   			</dependency>
   			<dependency>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-starter-web</artifactId>
   				<exclusions>
   					<exclusion>
   						<groupId>org.springframework.boot</groupId>
   						<artifactId>spring-boot-starter-tomcat</artifactId>
   					</exclusion>
   				</exclusions>
   			</dependency>
   			<dependency>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-starter-jetty</artifactId>
   			</dependency>
   
   			<dependency>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-starter-test</artifactId>
   				<!-- <scope>test</scope>-->
   			</dependency>
   
   
   		</dependencies>
   
   	</project>

   子maven配置

   pom.xml

   <?xml version="1.0" encoding="UTF-8"?>
   	<project xmlns="http://maven.apache.org/POM/4.0.0"
   			 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   			 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   		<parent>
   			<artifactId>cloud-demo</artifactId>
   			<groupId>tom.heliming.cloud</groupId>
   			<version>1.0-SNAPSHOT</version>
   		</parent>
   		<modelVersion>4.0.0</modelVersion>
   
   		<groupId>tom.heliming.memcache</groupId>
   		<artifactId>memcache</artifactId>
   
   		<dependencies>
   
   
   			<dependency>
   				<groupId>commons-pool</groupId>
   				<artifactId>commons-pool</artifactId>
   				<version>1.5.6</version>
   			</dependency>
   
   			<!-- https://mvnrepository.com/artifact/com.whalin/Memcached-Java-Client -->
   			<dependency>
   				<groupId>com.whalin</groupId>
   				<artifactId>Memcached-Java-Client</artifactId>
   				<version>3.0.0</version>
   			</dependency>
   
   		</dependencies>
   		<!-- 打包設置啓動springboot的main函數 -->
   		<build>
   			<finalName>memcached</finalName>
   			<plugins>
   				<plugin>
   					<groupId>org.springframework.boot</groupId>
   					<artifactId>spring-boot-maven-plugin</artifactId>
   				</plugin>
   			</plugins>
   		</build>
   	</project>

   application.yml

   #memcached啓動
   	#memcached -d -m 2048 -l 10.0.5.103 -p 11211
   	## Memcache 配置 ##
   	memcache:
   	  servers: 10.0.5.103:11211
   	  failover: true
   	  initConn: 100
   	  minConn: 20
   	  maxConn: 1000
   	  maintSleep: 50
   	  nagel: false
   	  socketTO: 3000
   	  aliveCheck: true

   app.java

   package top;
   
   	import org.springframework.boot.SpringApplication;
   	import org.springframework.boot.autoconfigure.SpringBootApplication;
   
   	/**
   	 * description:
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/8/22    10:32 AM
   	 */
   	@SpringBootApplication
   	public class App {
   
   		public static void main(String[] args) {
   			SpringApplication.run(App.class,args);
   		}
   	}

   MemcacheConfiguration.java

   package top.conf;
   
   	/**
   	 * description: 注入MemCachedClient
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/8/22    10:32 AM
   	 */
   	import com.whalin.MemCached.MemCachedClient;
   	import com.whalin.MemCached.SockIOPool;
   	import org.springframework.beans.factory.annotation.Value;
   	import org.springframework.context.annotation.Bean;
   	import org.springframework.context.annotation.Configuration;
   
   	@Configuration
   	public class MemcacheConfiguration {
   
   		@Value("${memcache.servers}")
   		private String[] servers;
   		@Value("${memcache.failover}")
   		private boolean failover;
   		@Value("${memcache.initConn}")
   		private int initConn;
   		@Value("${memcache.minConn}")
   		private int minConn;
   		@Value("${memcache.maxConn}")
   		private int maxConn;
   		@Value("${memcache.maintSleep}")
   		private int maintSleep;
   		@Value("${memcache.nagel}")
   		private boolean nagel;
   		@Value("${memcache.socketTO}")
   		private int socketTO;
   		@Value("${memcache.aliveCheck}")
   		private boolean aliveCheck;
   
   		@Bean
   		public SockIOPool sockIOPool () {
   			SockIOPool pool = SockIOPool.getInstance();
   			pool.setServers(servers);
   			pool.setFailover(failover);
   			pool.setInitConn(initConn);
   			pool.setMinConn(minConn);
   			pool.setMaxConn(maxConn);
   			pool.setMaintSleep(maintSleep);
   			pool.setNagle(nagel);
   			pool.setSocketTO(socketTO);
   			pool.setAliveCheck(aliveCheck);
   			pool.initialize();
   			return pool;
   		}
   
   		@Bean
   		public MemCachedClient memCachedClient(){
   			return new MemCachedClient();
   		}
   
   	}

   HelloController.java

   package top.controller;
   
   	import com.whalin.MemCached.MemCachedClient;
   
   	import org.springframework.beans.factory.annotation.Autowired;
   	import org.springframework.web.bind.annotation.RequestMapping;
   	import org.springframework.web.bind.annotation.RestController;
   
   	import java.util.Date;
   
   	/**
   	 * description:
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/8/22    10:38 AM
   	 */
   	@RestController
   	@RequestMapping
   	public class HelloController {
   
   		@Autowired
   		private MemCachedClient memCachedClient;
   
   		@RequestMapping("/memcahed")
   		public String hello() throws InterruptedException {
   
   			// 放入緩存
   			boolean flag = memCachedClient.set("a", 2);
   
   			// 取出緩存
   			Object a = memCachedClient.get("a");
   			System.out.println(a);
   
   
   			// 3s後過時
   			memCachedClient.set("b", "2", new Date(30));
   			Object b = memCachedClient.get("b");
   			System.out.println(b);
   
   			Thread.sleep(30);
   			b = memCachedClient.get("b");
   			System.out.println(a);
   			System.out.println(b);
   
   			return "memcachedok";
   		}
   	}

   ApplicationTests.java

   /**
   	 * description:
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/8/22    10:34 AM
   	 */
   	import com.whalin.MemCached.MemCachedClient;
   	import org.junit.Test;
   	import org.junit.runner.RunWith;
   	import org.springframework.beans.factory.annotation.Autowired;
   	import org.springframework.boot.test.context.SpringBootTest;
   	import org.springframework.test.context.junit4.SpringRunner;
   
   	import java.util.Date;
   
   	import top.App;
   
   	/**
   	 * set與add在key不存在時效果一致，add在key存在時不會成功。
   	 * set與replace在key存在時效果一致，replace在key不存在不會成功。
   	 */
   	@RunWith(SpringRunner.class)
   	@SpringBootTest(classes = App.class)
   	public class ApplicationTests {
   
   		@Autowired
   		private MemCachedClient memCachedClient;
   
   		@Test
   		public void contextLoads() throws InterruptedException{
   			// 放入緩存
   			boolean flag = memCachedClient.set("a", 1);
   
   			// 取出緩存
   			Object a = memCachedClient.get("a");
   			System.out.println(a);
   
   
   			// 3s後過時
   			memCachedClient.set("b", "2", new Date(3000));
   			Object b = memCachedClient.get("b");
   			System.out.println(b);
   
   			Thread.sleep(3000);
   			b = memCachedClient.get("b");
   			System.out.println(a);
   			System.out.println(b);
   		}
   
   	}