好用建站模板,wordpress按钮支付,更改wordpress管理员用户名密码,photoshop破解版下载免费中文版在Seata中#xff0c;有4种分布式事务实现方案
XA、AT、TCC、Saga
其中XA利用了数据库的分布式事务特性#xff0c;AT相当于框架去控制事务回滚。TCC手写三个方法#xff0c;saga手写两个方法。
AT的性能和编写比较折中#xff0c;是最常用的一种。TCC一些视频教程中介绍…在Seata中有4种分布式事务实现方案
XA、AT、TCC、Saga
其中XA利用了数据库的分布式事务特性AT相当于框架去控制事务回滚。TCC手写三个方法saga手写两个方法。
AT的性能和编写比较折中是最常用的一种。TCC一些视频教程中介绍了单表单字段加中间表的方式存储过程数据对于一次操作多个主子表数据的示例目前实现还是太繁琐了。
根据官方实例和相关视频简单写了下代码。
对于配置能用默认的用默认有示例配置的优先抄示例配置
1.加依赖 !-- 版本对应关系Alibaba 2021.0.5 对应 Seata 1.6.1https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E这里依赖不是 spring-cloud-alibaba-seata--dependencygroupIdcom.alibaba.cloud/groupIdartifactIdspring-cloud-starter-alibaba-seata/artifactIdversion2021.0.5.0/version/dependency
这里alibaba版本是2021.0.5所以spring-cloud-starter-alibaba-seata也用这个版本注意版本对应
2.写配置
seata:registry:type: nacosnacos:application: seata-serverserver-addr: 127.0.0.1:8848group: SEATA_GROUPcluster: default#事务组tx-service-group: default_tx_groupservice:#事务组和集群名称映射vgroup-mapping:default_tx_group: defaultdata-source-proxy-mode: AT
注意这里需要先配置好nacos和seata服务端seata服务端早期是json配置的新版的是yaml配置
seata服务端配置application.yml
# Copyright 1999-2019 Seata.io Group.
#
# Licensed under the Apache License, Version 2.0 (the License);
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an AS IS BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.server:port: 7091spring:application:name: seata-serverlogging:config: classpath:logback-spring.xmlfile:path: ${log.home:${user.home}/logs/seata}extend:logstash-appender:destination: 127.0.0.1:4560kafka-appender:bootstrap-servers: 127.0.0.1:9092topic: logback_to_logstashconsole:user:username: seatapassword: seata
seata:config:# support: nacos, consul, apollo, zk, etcd3type: fileregistry:# support: nacos, eureka, redis, zk, consul, etcd3, sofatype: nacosnacos:application: seata-serverserver-addr: 127.0.0.1:8848group: SEATA_GROUPnamespace:cluster: defaultusername:password:context-path:store:# support: file 、 db 、 redismode: file
# server:
# service-port: 8091 #If not configured, the default is ${server.port} 1000security:secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017tokenValidityInMilliseconds: 1800000ignore:urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.jpeg,/**/*.ico,/api/v1/auth/login
3.写代码
将主调用的方法注解Transactional改为GlobalTransactional其他微服务方法无需更改。 完整代码见顶部
