Spring中 @Transactional 注解的限制1. 同一个类中, 一个nan-transactional的方法去调用transactional的方法, 事务会失效 If you use (default) Spring Proxy AOP, then all AOP functionality provided by Spring (like @Transational) will only be taken into account if the call goes through…
在使用Transactional Replication时,Subscriber 被认为是“Read-Only”的 , All data at the Subscriber is “read-only” (transactional replication does not enforce this at the Subscriber),不能更新Subscriber数据的主键,否则,某些数据更新操作会失败. 一,在Transactional Replication中,How Changes Ar…
Sometimes the LINQ, Query Expressions or Fetch just doesn't give you the ability to quickly query your data in the way you want to. A good example of this is the lack of left outer join support if you want a where clause to filter results based on th…
在springMVC类上绑定@Transactional的注解,但是访问数据库时,总是报 can't localtion to current JTA Transactional. 后来发现springMVC和spring的注解扫描不能有重叠, @Scope("singleton") @Controller @RequestMapping("/shouxun") @Transactional public class ShouXunInterface { priva…
在transactional replication, 经常会遇到数据同步延迟的情况.有时候这些延迟是由于在publication中执行了一个更新,例如update ta set col=? Where ?,这个更新包含巨大的数据量.在subscription端,这个更新会分解成多条命令(默认情况下每个数据行一个命令),应用到subscription上. 不得已的情况下,我们需要跳过这个大的事务,让replication继续运行下去. 请注意,使用该操作会导致publication和subscr…
原文地址:http://blog.jhades.org/how-does-spring-transactional-really-work/ In this post we will do a deep dive into Spring transaction management. We will go over on how does @Transactional really works under the hood. Other upcoming posts will include:…
事务拓扑是怎么回事? Storm guarantees that every message will be played through the topology at least once. Storm has a feature called transactional topologies that let you achieve exactly-once messaging semantics for most computations. 事务拓扑,保证流入拓扑的数据能够被完整的处理且…
