三天学会阿里分布式事务框架Seata-seata事务日志mysql持久化配置

锋哥原创的分布式事务框架Seata视频教程：

实战阿里分布式事务框架Seata视频教程（无废话，通俗易懂版）_哔哩哔哩_bilibili实战阿里分布式事务框架Seata视频教程（无废话，通俗易懂版）共计10条视频，包括：1 阿里分布式事务框架Seata简介、2 分布式事务简介、3 SpringCloud Alibaba分布式基础案例搭建等，UP主更多精彩视频，请关注UP账号。https://www.bilibili.com/video/BV1Uf4y1579F/seata默认事务支持是file文件存储，不怎么好，不方便查看和管理；所以我们一般是db存储；

修改conf下的file.conf配置文件

把mode改成"db"，

然后下方mysql配置改成你们对应的配置即可，数据库要自己先建立，比如我这边定义是db_seata

还有三个表，global_table，branch_table，lock_table分别是全局事务会话表，分支事务会话表，锁数据表；

建表语句获取：https://gitee.com/dhb414/seata/blob/master/script/server/db/mysql.sql#

-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
CREATE TABLE IF NOT EXISTS `global_table`
(
    `xid`                       VARCHAR(128) NOT NULL,
    `transaction_id`            BIGINT,
    `status`                    TINYINT      NOT NULL,
    `application_id`            VARCHAR(32),
    `transaction_service_group` VARCHAR(32),
    `transaction_name`          VARCHAR(128),
    `timeout`                   INT,
    `begin_time`                BIGINT,
    `application_data`          VARCHAR(2000),
    `gmt_create`                DATETIME,
    `gmt_modified`              DATETIME,
    PRIMARY KEY (`xid`),
    KEY `idx_gmt_modified_status` (`gmt_modified`, `status`),
    KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

-- the table to store BranchSession data
CREATE TABLE IF NOT EXISTS `branch_table`
(
    `branch_id`         BIGINT       NOT NULL,
    `xid`               VARCHAR(128) NOT NULL,
    `transaction_id`    BIGINT,
    `resource_group_id` VARCHAR(32),
    `resource_id`       VARCHAR(256),
    `branch_type`       VARCHAR(8),
    `status`            TINYINT,
    `client_id`         VARCHAR(64),
    `application_data`  VARCHAR(2000),
    `gmt_create`        DATETIME(6),
    `gmt_modified`      DATETIME(6),
    PRIMARY KEY (`branch_id`),
    KEY `idx_xid` (`xid`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(
    `row_key`        VARCHAR(128) NOT NULL,
    `xid`            VARCHAR(96),
    `transaction_id` BIGINT,
    `branch_id`      BIGINT       NOT NULL,
    `resource_id`    VARCHAR(256),
    `table_name`     VARCHAR(32),
    `pk`             VARCHAR(36),
    `gmt_create`     DATETIME,
    `gmt_modified`   DATETIME,
    PRIMARY KEY (`row_key`),
    KEY `idx_branch_id` (`branch_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;