Ignite缓存持久化例子

1、配置文件

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" id="dataSource">        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>        <property name="url" value="jdbc:mysql://localhost:3306/test"></property>        <property name="username" value="root"></property>        <property name="password" value="root"></property>    </bean>    <bean class="org.apache.ignite.configuration.IgniteConfiguration" id="ignite.cfg">        <property name="cacheConfiguration">            <list>                <bean class="org.apache.ignite.configuration.CacheConfiguration">                    <property name="name" value="personCache"></property>                    <property name="readThrough" value="true"></property>                    <property name="writeThrough" value="true"></property>                    <!-- Set cacheStoreFactory-->                    <property name="cacheStoreFactory">                        <bean class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">                            <constructor-arg value="com.peidw.ignite.store.PersonStore"></constructor-arg>                        </bean>                    </property>                    <property name="queryEntities">                        <list>                            <bean class="org.apache.ignite.cache.QueryEntity">                                <property name="keyType" value="java.lang.Long"></property>                                <property name="valueType" value="com.peidw.ignite.model.Person"></property>                                <property name="fields">                                    <map>                                        <entry key="id" value="java.lang.Long"></entry>                                        <entry key="orgId" value="java.lang.Integer"></entry>                                        <entry key="name" value="java.lang.String"></entry>                                    </map>                                </property>                            </bean>                        </list>                    </property>                </bean>            </list>        </property>        <property name="peerClassLoadingEnabled" value="true"></property>        <property name="discoverySpi">            <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">                <property name="joinTimeout" value="200"/>  <!-- 服务端不存就立刻退出-->                <property name="ipFinder">                    <bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">                        <property name="addresses">                            <list>                                <value>127.0.0.1:47500</value>                            </list>                        </property>                    </bean>                </property>            </bean>        </property>    </bean></beans>

实现的代码:

1、模型，Person.java，从上面的配置中我们可以看得出是使用了mysql数据库

DROP TABLE IF EXISTS `person`;CREATE TABLE `person` (  `id` bigint(20) NOT NULL,  `orgId` bigint(20) DEFAULT NULL,  `name` varchar(200) CHARACTER SET latin1 DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

package com.peidw.ignite.model;/** * Created by ThinkPad on 2017-08-28. */public class Person {    private long id;    private int orgId;    private String name;    public Person(){    }    public Person(long vid,int vorgId,String vname){        this.id=vid;        this.orgId=vorgId;        this.name=vname;    }    public long getId() {        return id;    }    public void setId(long id) {        this.id = id;    }    public int getOrgId() {        return orgId;    }    public void setOrgId(int orgId) {        this.orgId = orgId;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

PersonStore.java缓存实现类

package com.peidw.ignite.store;import com.peidw.ignite.model.Person;import org.apache.ignite.cache.store.CacheStore;import org.apache.ignite.lang.IgniteBiInClosure;import org.apache.ignite.resources.SpringResource;import org.jetbrains.annotations.Nullable;import javax.cache.Cache;import javax.cache.integration.CacheLoaderException;import javax.cache.integration.CacheWriterException;import javax.sql.DataSource;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.util.Collection;import java.util.Map;/** * 缓存工厂 * Created by peidw on 2017-08-28. */public class PersonStore implements CacheStore<Long, Person> {    @SpringResource(resourceName = "dataSource")    private DataSource dataSource;    @Override    public void loadCache(IgniteBiInClosure<Long, Person> igniteBiInClosure, @Nullable Object... objects) throws CacheLoaderException {        System.out.println(">> Loading cache from store...");        try {            Connection conn = dataSource.getConnection();            PreparedStatement st = conn.prepareStatement("select * from PERSON");            ResultSet rs = st.executeQuery();             while (rs.next()) {                 System.out.println("----------------->"+rs.getString(3));                 Person person = new Person(rs.getLong(1),  rs.getInt(2), rs.getString(3));                 igniteBiInClosure.apply(person.getId(), person);             }         } catch (Exception e) {            throw new CacheLoaderException("Failed to load values from cache store.", e);        }    }    @Override    public void sessionEnd(boolean b) throws CacheWriterException {    }    @Override    public Person load(Long aLong) throws CacheLoaderException {        System.out.println(">> Loading person from store...");        try (Connection conn = dataSource.getConnection()) {            try (PreparedStatement st = conn.prepareStatement("select * from PERSON where id = ?")) {                st.setString(1, aLong.toString());                ResultSet rs = st.executeQuery();                return rs.next() ? new Person(rs.getLong(1), rs.getInt(2), rs.getString(3) ) : null;            }        } catch (SQLException e) {            throw new CacheLoaderException("Failed to load values from cache store.", e);        }    }    @Override    public Map<Long, Person> loadAll(Iterable<? extends Long> iterable) throws CacheLoaderException {        return null;    }    @Override    public void write(Cache.Entry<? extends Long, ? extends Person> entry) throws CacheWriterException {        System.out.println(">> Loading person from store...");        try (Connection conn = dataSource.getConnection()) {            PreparedStatement st = conn.prepareStatement("insert into  PERSON(id,orgId,name)VALUE (?,?,?) ");            st.setLong((int)1,(long)entry.getKey());            st.setInt((int)2,entry.getValue().getOrgId());            st.setString((int)3,entry.getValue().getName());            st.executeUpdate();            System.out.println(">> add person to store...");        } catch (SQLException e) {            throw new CacheLoaderException("Failed to add person  to table store.", e);        }    }    @Override    public void writeAll(Collection<Cache.Entry<? extends Long, ? extends Person>> collection) throws CacheWriterException {    }    @Override    public void delete(Object o) throws CacheWriterException {    }    @Override    public void deleteAll(Collection<?> collection) throws CacheWriterException {    }}

服务端启动类PersonStoreServer.java

package com.peidw.ignite;import org.apache.ignite.Ignite;import org.apache.ignite.IgniteException;import org.apache.ignite.Ignition;/** * Created by ThinkPad on 2017-08-28. */public class PersonStoreServer {    public static void main(String[] args) throws IgniteException {        Ignite ignite = Ignition.start("E:/Program Files (x86)/JetBrains/mywk/stud/igniteDemo/src/main/resources/Read-Through.xml");    }}

PersonStoreClient.java

package com.peidw.ignite;import com.peidw.ignite.model.Person;import org.apache.ignite.Ignite;import org.apache.ignite.IgniteCache;import org.apache.ignite.IgniteException;import org.apache.ignite.Ignition;import org.apache.ignite.cache.query.QueryCursor;import org.apache.ignite.cache.query.SqlFieldsQuery;import java.util.List;/** *  * Created by peidw on 2017-08-28. */public class PersonStoreClient {    public static void main(String[] args) throws IgniteException {        Ignition.setClientMode(true);        Ignite ignite = Ignition.start("E:\\Program Files (x86)\\JetBrains\\mywk\\stud\\igniteDemo\\src\\main\\resources\\Read-Through.xml");        IgniteCache<Long, Person> cache = ignite.getOrCreateCache("personCache");        cache.loadCache(null);        QueryCursor<List<?>> cursor = cache.query(new SqlFieldsQuery("select id, orgId,name from Person"));        System.out.println(cursor.getAll());        Person p=new Person(44,5,"CCED");        cache.put(p.getId(),p);        ignite.close();    }}

即可运行测试

官方文档，参考：https://www.zybuluo.com/liyuj/note/785629