High performance and easy-to-use TCC distributed transaction framework based on spring, real-time (optional), weak consistency, compensation recovery,etc..基于spring的高性能、易用的TCC分布式事务框架，实时（可选），最终一致、补偿恢复等
Try: Try to execute business
尝试执行业务
Confirm: Identity is required to confirm the execution of business
确认执行业务，需满足幂等性
Cancel: To cancel the execution of business, idempotency must be satisfied
取消执行业务，需满足幂等性
xid is Global transaction ID,xidCreateStack is a stack for creating global transaction ID
xid是一个全局事务ID，xidCreateStack是创建全局事务的方法栈
by default, transactions will be processed real time by netty(Contains local and remote transactions),which is started in xidCreateStack
事务默认使用netty实时处理(包含本地事务和远程事务),这项工作从 xidCreateStack 发起
if a transaction fails (network reasons, etc.), it will be reserved for recovery until the number of failed configurations
事务若处理失败（网络原因等），将被保留等待恢复，直到配置的失败次数
local transaction is the local transaction of each service in this global transaction,Because a local transaction may have multiple transaction annotations, the local Transaction BeginStack is the method stack for creating local transactions
local transaction 是每个服务在本次全局事务中的本地事务,由于一个本地事务可能有多处使用事务注解，localTransactionBeginStack 是本地事务的创建方法栈
Local Transaction BeginStack saves local transaction data after tcc's try phase, which is used for confirm/cancel decision-making in the next phase.
localTransactionBeginStack 会在tcc的try阶段结束后保存本地事务数据，用于下阶段的confirm/cancel作出决策
Transactions that fail to commit, roll back (real-time failures, eventual consensus failures, etc.) are retried automatically until the number of failures reaches the number of configurations, as detailed in the configurations.
After reaching the number of times, the global transaction and local transaction data will be transferred to the failure area for queries to be processed manually.
自动会对提交、回滚失败（实时失败、最终一致失败等）的事务进行重试，直到失败次数达到所配置的次数，详见配置
达到次数后，全局事务、本地事务数据将被移交至失败区，可供查询人工处理
Spring cloud, Dubbo integration and related customization
springcloud、dubbo等集成和相关自定义