SpringCloud+Seata+nacos案例（包含源码Seata及nacos安装教程）
⼀.Seata简介
Seata 是⼀款开源的分布式事务解决⽅案，致⼒于在微服务架构下提供⾼性能和简单易⽤的分布式事务服务。在 Seata 开源之前，Seata 对应的内部版本在阿⾥经济体内部⼀直扮演着分布式⼀致性中间件的⾓⾊，帮助经济体平稳的度过历年的双 11，对各 BU 业务进⾏了有⼒的⽀撑。经过多年沉淀与积累，商业化产品先后在阿⾥云、⾦融云进⾏售卖。2019.1为了打造更加完善的技术⽣态和普惠技术成
果，Seata 正式宣布对外开源，未来 Seata 将以社区共建的形式帮助其技术更加可靠与完备。
⼆.Seata安装(Windows安装)
1.下载地址: 博主这⾥使⽤的是v0.9.0
2.下载后需要对对应⽂件尽⼼修改
f修改
transport {
# tcp udt unix-domain-socket
type = "TCP"
#NIO NATIVE
server = "NIO"
#enable heartbeat
heartbeat = true
#thread factory for netty
thread-factory {
boss-thread-prefix = "NettyBoss"
worker-thread-prefix = "NettyServerNIOWorker"
server-executor-thread-prefix = "NettyServerBizHandler"
share-boss-worker = false
client-selector-thread-prefix = "NettyClientSelector"
client-selector-thread-size = 1
client-worker-thread-prefix = "NettyClientWorkerThread"
# netty boss thread size,will not be used for UDT
boss-thread-size = 1
#auto default pin or 8
worker-thread-size = 8
}
shutdown {
# when destroy server, wait seconds
wait = 3
}
serialization = "seata"
compressor = "none"
}
service {
#vgroup->rgroup
_test_tx_group = "fsp_ex_group"
#only support single node
#degrade current not support
enableDegrade = false
#disable
disable = false
#unit ms,s,m,h,d represents milliseconds, seconds, minutes, hours, days, default permanent
#若报配置异常则加上下⾯⼀句配置即可
disableGlobalTransaction=false
}
client {
asyncmit.buffer.limit = 10000
lock {
retry.internal = 10
retry.times = 30
retry.times = 30
}
}
## transaction log store
store {
## store mode: file、db
mode = "db"
## file store
file {
dir = "sessionStore"
# branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
max-branch-session-size = 16384
# globe session size , if exceeded throws exceptions
max-global-session-size = 512
# file buffer size , if exceeded allocate new buffer
file-write-buffer-cache-size = 16384
# when recover batch read size
# async, sync
flush-disk-mode = async
}
## database store
db {
## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp) etc.    datasource = "dbcp"
## mysql/oracle/h2/oceanbase etc.
db-type = "mysql"
driver-class-name = "sql.jdbc.Driver"
url = "jdbc:mysql://localhost:3306/seata"
user = "root"
password = "123456"
min-conn = 1
max-conn = 3
global.table = "global_table"
branch.table = "branch_table"
lock-table = "lock_table"
query-limit = 100
}
}
lock {
## the lock store mode: local、remote
mode = "remote"
local {
## store locks in user's database
}
mysql windows安装教程remote {
## store locks in the seata's server
}
}
recovery {
#schedule committing retry period in milliseconds
committing-retry-period = 1000
#schedule asyn committing retry period in milliseconds
asyn-committing-retry-period = 1000
#schedule rollbacking retry period in milliseconds
rollbacking-retry-period = 1000
#schedule timeout retry period in milliseconds
#schedule timeout retry period in milliseconds
timeout-retry-period = 1000
}
transaction {
undo.data.validation = true
undo.log.serialization = "jackson"
undo.log.save.days = 7
#schedule delete expired undo_log in milliseconds
undo.log.delete.period = 86400000
undo.log.table = "undo_log"
}
## metrics settings
metrics {
enabled = false
registry-type = "compact"
# multi exporters use comma divided
exporter-list = "prometheus"
exporter-prometheus-port = 9898
}
support {
## spring
spring {
# auto proxy the DataSource bean
datasource.autoproxy = false
}
}
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa  type = "file"
nacos {
serverAddr = "localhost"
namespace = ""
cluster = "default"
}
eureka {
serviceUrl = "localhost:8761/eureka"
application = "default"
weight = "1"
}
redis {
serverAddr = "localhost:6379"
db = "0"
}
zk {
cluster = "default"
serverAddr = "127.0.0.1:2181"
session.timeout = 6000
connect.timeout = 2000
}
consul {
cluster = "default"
serverAddr = "127.0.0.1:8500"
}
etcd3 {
cluster = "default"
serverAddr = "localhost:2379"
}
sofa {
serverAddr = "127.0.0.1:9603"
serverAddr = "127.0.0.1:9603"
application = "default"
region = "DEFAULT_ZONE"
datacenter = "DefaultDataCenter"
cluster = "default"
group = "SEATA_GROUP"
addressWaitTime = "3000"
}
file {
name = "f"
}
}
config {
# file、nacos 、apollo、zk、consul、etcd3  type = "file"
nacos {
serverAddr = "localhost"
namespace = ""
}
consul {
serverAddr = "127.0.0.1:8500"
}
apollo {
app.id = "seata-server"
zk {
serverAddr = "127.0.0.1:2181"
session.timeout = 6000
connect.timeout = 2000
}
etcd3 {
serverAddr = "localhost:2379"
}
file {
name = "f"
}
}
3.创建seata数据库(mysql) 将seata->conf->db_store.sql放到数据库中运⾏即可
4.到bin⽬录下到seata-server.bat运⾏即可 如下即为成功运⾏:
三.nacos安装
四.项⽬案例
1.项⽬结构
account-service：负责对⽤户余扣减
business-service：负责完成下单的逻辑，包含 2 个主要的步骤，就是对库存服务和订单服务的远程调⽤order-service：负责完成保存⽤户订单的操作
storage-service：负责完成对库存的扣减
2.各模块主要代码展⽰:
account-service

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。