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Add lesson 10
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‎spring-boot/lesson-10/Spring Boot 系列之缓存 海报.png

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‎spring-boot/lesson-10/Spring Boot 系列之缓存.jpg

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‎spring-boot/lesson-10/Spring Boot 系列之缓存.pptx

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‎spring-boot/lesson-10/spring-boot-lesson-10/.gitignore

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target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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nbproject/private/
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build/
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nbbuild/
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dist/
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nbdist/
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.nb-gradle/

‎spring-boot/lesson-10/spring-boot-lesson-10/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.segmentfault</groupId>
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<artifactId>spring-boot-lesson-10</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>spring-boot-lesson-10</name>
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<description>Demo project for Spring Boot</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>1.5.6.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-actuator</artifactId>
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</dependency>
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<dependency>
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<groupId>javax.cache</groupId>
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<artifactId>cache-api</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-cache</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-redis</artifactId>
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</dependency>
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<!--<dependency>-->
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<!--<groupId>org.springframework</groupId>-->
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<!--<artifactId>spring-jdbc</artifactId>-->
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<!--</dependency>-->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎spring-boot/lesson-10/spring-boot-lesson-10/src/main/java/com/segmentfault/springbootlesson10/CacheConfiguration.java

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package com.segmentfault.springbootlesson10;
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import org.springframework.cache.CacheManager;
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import org.springframework.cache.annotation.EnableCaching;
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import org.springframework.cache.concurrent.ConcurrentMapCache;
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import org.springframework.cache.support.SimpleCacheManager;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.transaction.annotation.EnableTransactionManagement;
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import java.util.Arrays;
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/**
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* 缓存的配置
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.04
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*/
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@Configuration
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@EnableCaching
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//@EnableTransactionManagement
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public class CacheConfiguration {
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@Bean
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public CacheManager simpleCacheManager() {
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SimpleCacheManager simpleCacheManager = new SimpleCacheManager();
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ConcurrentMapCache cache = new ConcurrentMapCache("cache-1");
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ConcurrentMapCache personsCache = new ConcurrentMapCache("persons");
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simpleCacheManager.setCaches(Arrays.asList(cache, personsCache));
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return simpleCacheManager;
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}
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}

‎spring-boot/lesson-10/spring-boot-lesson-10/src/main/java/com/segmentfault/springbootlesson10/SpringBootLesson10Application.java

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package com.segmentfault.springbootlesson10;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import java.util.concurrent.locks.Lock;
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import java.util.concurrent.locks.ReentrantLock;
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@SpringBootApplication
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public class SpringBootLesson10Application {
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//lock-free
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// private volatile int data;
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//
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private synchronized void doSome() {
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Lock outterLock = new ReentrantLock();
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Lock innterLock = new ReentrantLock();
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try {
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outterLock.tryLock();
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innterLock.tryLock();
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} finally {
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innterLock.unlock();
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outterLock.unlock();
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}
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}
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public static void main(String[] args) {
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SpringApplication.run(SpringBootLesson10Application.class, args);
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// Integer var = new Integer(1);
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// Integer var2 = new Integer(1);
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// System.out.println(var.hashCode());
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// System.out.println(var2.hashCode());
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//
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// System.out.println(System.identityHashCode(var));
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// System.out.println(System.identityHashCode(var2));
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}
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}

‎spring-boot/lesson-10/spring-boot-lesson-10/src/main/java/com/segmentfault/springbootlesson10/controller/CacheController.java

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package com.segmentfault.springbootlesson10.controller;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.cache.Cache;
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import org.springframework.cache.CacheManager;
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import org.springframework.web.bind.annotation.*;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* TODO
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.04
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*/
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@RestController
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@RequestMapping("/cache")
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public class CacheController {
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@Autowired
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@Qualifier("simpleCacheManager")
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private CacheManager simpleCacheManager;
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@PostMapping("/save")
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public Map<String, Object> save(@RequestParam String key, @RequestParam String value) {
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Cache cache = simpleCacheManager.getCache("cache-1");
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cache.put(key, value);
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Map<String, Object> result = new HashMap<>();
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result.put(key, value);
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return result;
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}
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}

‎spring-boot/lesson-10/spring-boot-lesson-10/src/main/java/com/segmentfault/springbootlesson10/controller/PersonController.java

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package com.segmentfault.springbootlesson10.controller;
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import com.segmentfault.springbootlesson10.entity.Person;
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import com.segmentfault.springbootlesson10.repository.PersonRepository;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import java.util.Map;
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/**
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* TODO
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.04
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*/
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@RestController
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@RequestMapping("/person")
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public class PersonController {
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@Autowired
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private PersonRepository repository;
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@PostMapping("/save")
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public Person save(@RequestBody Person person) {
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repository.savePerson(person);
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return person;
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}
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@GetMapping("/get/{id}")
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public Person get(@PathVariable String id) {
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return repository.findPerson(id);
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}
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}

‎spring-boot/lesson-10/spring-boot-lesson-10/src/main/java/com/segmentfault/springbootlesson10/entity/Person.java

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package com.segmentfault.springbootlesson10.entity;
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import java.io.Serializable;
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/**
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* 人
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @see
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* @since 2017.08.04
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*/
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public class Person implements Serializable {
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private String id;
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private String name;
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private int age;
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public String getId() {
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return id;
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}
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public void setId(String id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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}

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