SpringCloudAlibaba——Seata配置文件

╰+攻爆jí腚メ 2021-09-01 06:00 730阅读 0赞

#### Seata配置文件详解 ####

在`${SEATA_HOME}\conf`目录下有两个配置文件，分别是registry.conf和file.conf。

#### registry.conf ####

registry.conf包含两项配置：

`registry`：表示配置Seata服务注册的地址，支持目前市面上所有主流的注册中心组件。它的配置非常简单，通过type指定注册中心的类型，然后根据指定的类型对应的服务地址信息，比如当type=nacos时，则匹配到Nacos的配置项如下：

type="nacos"
    nacos { 
    	serverAddr = "localhost:8848" #指定自己的nacos地址
        namespace = ""
        cluster = "default"
      }

type默认为file，它表示不依赖于配置中心，在file类型下，可以不依赖第三方配置中心快速集成Seata，不过file类型不具备注册中心的动态发现和动态配置功能。

`config：`用于配置Seata服务端的配置文件地址，也就是可以通过config配置指定Seata服务端的配置信息的加载位置，它支持从远程配置中心读取和本地文件读取良好总方式。如果配置为远程配置中心，可以使用type指定，配置形式和registry相同：

type="nacos"
    nacos { 
      serverAddr = "localhost"
      namespace = ""
    }

在默认情况下type=file，它会加载file.conf文件中的配置信息。

#### file.conf ####

file.conf存储的是Seata服务端的配置信息，完成配置如下。它包含transport、server、metrics，分别表示协议配置、服务端配置、监控：

transport { 
      # tcp udt unix-domain-socket
      type = "TCP"
      #NIO NATIVE
      server = "NIO"
      #enable heartbeat
      heartbeat = true  #clien和server通信心跳检测开关
      #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" #client和server通信编解码方式
      compressor = "none" #client和server通信数据压缩方式（none、gzip、默认为none）
    }
    
    service { 
    
      vgroup_mapping.fsp_tx_group = "default" #修改自定义事务组名称
    
      default.grouplist = "127.0.0.1:8091"
      enableDegrade = false
      disable = false
      max.commit.retry.timeout = "-1"
      max.rollback.retry.timeout = "-1"
      disableGlobalTransaction = false
    }
    
    
    client { 
      async.commit.buffer.limit = 10000
      lock { 
        retry.internal = 10
        retry.times = 30
      }
      report.retry.count = 5
      tm.commit.retry.count = 1
      tm.rollback.retry.count = 1
    }
    
    ## 事务日志存储配置
    store { 
      ## 存储类型，支持file和db，默认是file
      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
        session.reload.read_size = 100
        # async, sync
        flush-disk-mode = async
      }
    
      ## 数据库存储的配置属性
      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 = "com.mysql.jdbc.Driver"
        url = "jdbc:mysql://127.0.0.1:3306/seata"
        user = "root"
        password = "123456"
        min-conn = 1
        max-conn = 3
        global.table = "global_table" #db模式全局事务表名
        branch.table = "branch_table" #db模式分支事务表名
        lock-table = "lock_table"  #db模式全局锁表名
        query-limit = 100  #db模式查询全局事务一次的最大条数
      }
    }
    lock { 
      ## the lock store mode: local、remote
      mode = "remote"
    
      local { 
        ## store locks in user's database
      }
    
      remote { 
        ## store locks in the seata's server
      }
    }
    recovery { 
      #二段提交未完成状态全局事务重试提交线程间隔时间
      committing-retry-period = 1000
      #二阶段异步提交状态 重试提交线程间隔时间
      asyn-committing-retry-period = 1000
      #二阶段回滚状态 重试回滚线程间隔时间
      rollbacking-retry-period = 1000
      #超时状态监测重试线程间隔时间
      timeout-retry-period = 1000
    }
    
    transaction { 
      undo.data.validation = true
      undo.log.serialization = "jackson"
      undo.log.save.days = 7 #undo保留天数
      #undo清理线程间隔时间（毫秒）
      undo.log.delete.period = 86400000
      undo.log.table = "undo_log"
    }
    
    ## metrics settings
    metrics { 
      enabled = false #是否启用metrics
      registry-type = "compact" #指标注册器类型
      # multi exporters use comma divided
      exporter-list = "prometheus" #指标结果Measurement数据输出器列表
      exporter-prometheus-port = 9898 #prometheus输出器Client端口号
    }
    
    support { 
      ## spring
      spring { 
        # auto proxy the DataSource bean
        datasource.autoproxy = false 
      }
    }