<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>2.3.3.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR8</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.73</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.21</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.8.1</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
<exclusion>
<groupId>com.netflix.ribbon</groupId>
<artifactId>ribbon-eureka</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
</dependency>
</dependencies>
@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {
public static void main(String[] args) {
new SpringApplicationBuilder(EurekaApplication.class).web(WebApplicationType.SERVLET).run(args);
}
}
单机版配置
server:
port: 8761
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--eureka注册中心客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
<exclusion>
<groupId>com.netflix.ribbon</groupId>
<artifactId>ribbon-eureka</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--Spring Cloud LoadBalancer is currently working with the default cache. You can switch to using Caffeine cache, by adding it to the classpath.-->
<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
</dependencies>
@EnableDiscoveryClient
@SpringBootApplication
public class UserApplication {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
}
controller、service等代码此处省略
访问：http://127.0.0.1:8761/ 查看是否注册成功
由于 Ribbon load-balancer 现在处于维护模式，spring官方建议使用Spring Cloud LoadBalancer；在配置文件中添加如下配置：
spring.cloud.loadbalancer.ribbon.enabled=false
eureka注册中心客户端的依赖中排除如下依赖
<!--eureka注册中心客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
<exclusion>
<groupId>com.netflix.ribbon</groupId>
<artifactId>ribbon-eureka</artifactId>
</exclusion>
</exclusions>
</dependency>
关于Spring Cloud LoadBalancer is currently working with the default cache. You can switch to using Caffeine cache, by adding it to the classpath. 的警告添加如下依赖即可：
<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
</dependency>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<!--eureka注册中心客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</exclusion>
<exclusion>
<groupId>com.netflix.ribbon</groupId>
<artifactId>ribbon-eureka</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
</dependency>
</dependencies>
server:
port: 9000
spring:
application:
name: gateway-server
cloud:
gateway:
discovery:
locator:
enabled: true
routes:
- id: user-server
uri: lb://user-server
predicates:
- Path=/user/**
loadbalancer:
ribbon:
enabled: false
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
@EnableDiscoveryClient
@SpringBootApplication
public class GatewayApplication {
public static void main(String[] args) {
new SpringApplicationBuilder(GatewayApplication.class).web(WebApplicationType.REACTIVE).run(args);
}
}
启动所有服务验证是否成功：http://127.0.0.1:9000/user/base?id=1
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis-reactive</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
</dependency>
@Configuration 类似以前写在xml中配置bean，可以认为这就是一个xml配置文件
spring文档：https://docs.spring.io/spring-data/elasticsearch/docs/current/reference/html
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
引入es包版本最好和使用的elasticsearch版本相同，避免出现问题
根据关键词查询站点信息：
es的DLS语句：
GET /train_station_name/_search
{
"query": {
"bool": {
"should": [
{
"prefix": {
"cnName.keyword": {
"value": "beib"
}
}
},
{
"match_phrase_prefix": {
"pinyin": "beib"
}
}
]
}
}
}
spring封装的ElasticsearchRestTemplate实现：
@Autowired
private ElasticsearchRestTemplate elasticsearchRestTemplate;
public Flux<TrainStationNameDTO> findTrainStationName(String keywords) {
BoolQueryBuilder boolQuery = new BoolQueryBuilder();
QueryBuilder cnNameQuery = new PrefixQueryBuilder("cnName.keyword", keywords);
boolQuery.should(cnNameQuery);
QueryBuilder pinyinQuery = new MatchPhrasePrefixQueryBuilder("pinyin", keywords);
boolQuery.should(pinyinQuery);
Query query = new NativeSearchQuery(boolQuery);
return Flux.fromIterable(elasticsearchRestTemplate.search(query, TrainStationNameDTO.class)).map(SearchHit::getContent);
}
或者：
@Component
@Document(indexName = "train_station_name")
public interface TrainStationNameRepository extends ElasticsearchRepository<TrainStationNameDTO, Long> {
/**
* 查询以keywords开头的站点信息
* @param cnName 中文
* @param pinyin 拼音
* @return 返回结果
*/
List<TrainStationNameDTO> findByCnNameStartingWithOrPinyinStartingWith(String cnName, String pinyin);
}
或者使用client
@Autowired
private RestHighLevelClient client;
private void useClient(String keywords) {
SearchRequest request = new SearchRequest("train_station_name");
request.source(SearchSourceBuilder.searchSource()
.query(QueryBuilders.boolQuery()
.should(QueryBuilders.prefixQuery("cnName.keyword", keywords))
.should(QueryBuilders.matchPhrasePrefixQuery("pinyin", keywords))
)
);
try {
SearchResponse search = client.search(request, RequestOptions.DEFAULT);
log.info(JSONObject.toJSONString(search.getHits()));
} catch (IOException e) {
e.printStackTrace();
}
}
Producer:消息生产者
Producer Group:消息生产者组，发送同类消息的一个消息生产组
Consumer:消费者
Consumer Group:消费同个消息的多个实例
Tag:标签，子主题（二级分类）,用于区分同一个主题下的不同业务的消息
Topic:主题
Message：消息
Broker：MQ程序，接收生产的消息，提供给消费者消费的程序
Name Server：给生产和消费者提供路由信息，提供轻量级的服务发现和路由
添加依赖：
<!-- rocketmq-->
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
在application.yml配置文件中添加如下配置：
rocketmq:
# name server地址，有多个的时候用逗号分开
name-server: 192.168.111.63:9876
producer:
## 这个是消息分组，必须配置
group: pay_server
代码中使用：
private final RocketMQTemplate rocketMQTemplate;
public PayOrderServiceImpl(RocketMQTemplate rocketMQTemplate) {
this.rocketMQTemplate = rocketMQTemplate;
}
/**
* 支付成功订单处理
* @param payDTO 支付订单信息
* @return 返回处理结果
*/
@Override
public Mono<String> pay(PayDTO payDTO) {
// 存储支付订单
log.info("存储订单信息:{}", payDTO);
return Mono.defer(()->Mono.just(savePayOrder(payDTO))).flatMap(p->{
if(p){
// 向业务系统推送支付成功通知
log.info("推送rocket mq 消息");
this.rocketMQTemplate.convertAndSend("pay:pay_success", payDTO);
return Mono.just("操作成功");
}
return Mono.just("数据库异常");
});
}
}
目前定制的RocketMQTemplate工具感觉还不太全面，参数也不明确，建议还是使用原始的
添加依赖：
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>4.7.1</version>
</dependency>
创建生产者：
@Slf4j
@Component
public class RocketProducerBuilder implements DisposableBean {
private DefaultMQProducer producer;
/**
* 初始化DefaultMQProducer
*
* 参考rocketmq-spring-boot包中的org.apache.rocketmq.spring.autoconfigure.RocketMQAutoConfiguration类
*
* @throws MQClientException 启动消息生成者异常
*/
@PostConstruct
void init() throws MQClientException {
//生产者的组名
producer = new DefaultMQProducer("pay-server");
/// 指定NameServer地址，多个地址以 ; 隔开
producer.setNamesrvAddr("192.168.100.141:9876;192.168.100.142:9876;192.168.100.149:9876");
// 关闭Channel通道
producer.setVipChannelEnabled(false);
// 发送消息超时时间，单位毫秒
producer.setSendMsgTimeout(3000);
// 在同步模式下，消息发送失败后重试次数，注意这个可能导致重复消息
producer.setRetryTimesWhenSendFailed(2);
// 在异步模式下，消息发送失败后重试次数，注意这个可能导致重复消息
producer.setRetryTimesWhenSendAsyncFailed(2);
// 发送消息的消息体网络包最大值
producer.setMaxMessageSize(1024 * 1024 * 4);
// 当消息体网络包大于4k时压缩消息
producer.setCompressMsgBodyOverHowmuch(1024 * 4);
// 当向一个broker发送消息失败了，是否重新尝试下一个
producer.setRetryAnotherBrokerWhenNotStoreOK(false);
// Producer对象在使用之前必须要调用start初始化，只能初始化一次
producer.start();
}
/**
* 获取DefaultMQProducer
* @return 返回消息生产者DefaultMQProducer
*/
public DefaultMQProducer build(){
return this.producer;
}
@Override
public void destroy() throws Exception {
if(null!=producer){
producer.shutdown();
log.info("Rocket Producer Destroyed");
}
}
}
Tendis存储版是腾讯互娱CROS DBA团队 & 腾讯云数据库团队 自主设计和研发的开源分布式高性能KV存储。完全兼容redis协议，并使用rocksdb作为存储引擎。用户可以通过redis client访问Tendis存储版，几乎不用修改代码。同时，Tendis存储版支持远超内存的磁盘容量，可以大大降低用户的存储成本。
类似于Redis Cluster, Tendis存储版使用去中心化的集群管理架构。数据节点之间通过gossip协议通讯，用户访问集群中的任意数据节，请求都能路由到正确的节点。并且集群节点支持自动发现、故障探测、自动故障切换、数据搬迁等能力，极大降低运维成本。
从Tendis的github上下载安装包即可；
- 解压
tar zxvf tendisplus-2.1.2-rocksdb-v5.13.4.tgz- 修改配置
进入解压后的目录中，修改配置文件scripts/tendisplus.conf；在里面添加一行bind 服务器的IP；之后将里面路径相关改为你想要的； 注意catalog这个目录需要你手动创建，否则将启动失败；
比如： mkdir -p /home/tendis/db/catalog；如果启动失败可以到日志文件里面去查看失败原因。
# tendisplus configuration for testing
port 51002
loglevel notice
logdir /home/tendis/log
dumpdir /home/tendis/dump
dir /home/tendis/db
pidfile /home/tendis/tendisplus.pid
slowlog /home/tendis/log/slowlog
rocks.blockcachemb 4096
executorThreadNum 48
bind 192.168.56.102
- 启动
bin/tendisplus scripts/tendisplus.conf之后直接将项目中的redis的连接地址切换到这个的即可，注意端口号变为了51002；