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LP3470IM5X-2.93 Datasheet | National Semiconductor
Part No. : LP3470IM5X-2.93
Description : Tiny Power On Reset Circuit
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Page Number : 7
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LP3470IM5X-2.93 Article About

InitializeComponent; 1, to seriously consider whether you really want to use the J2EE this is very important, very important. J2EE covers the contents of the large and comprehensive, but many are not necessarily the specific practical needs of the project. EJB class as access control, if your presentation layer and application server does not exist the issue of trust, so basically do not need to consider. Another example is scalable, if both line up to more than 100, will not help. Choice for the actual situation of the project cost-effective than the most appropriate solution, rather than the application of advanced technology to the application of advanced technology. 2, select the appropriate distribution model lift distribution, many people may all have this idea: server A handles authentication, server B process orders, server C treatment storage; if the Bs load is too large, then subdivided this: input, modify part of the EJB deployed in the server D, statistical analysis part of the deployment of the server E, and so on. In fact there is no need, My experience is: Unless the business must be, otherwise all the best to all in one app server applications, can be better in a process space, then the distribution of a parallel - that is all the app cluster server functions are equivalent. Vertical distribution of the former compared to the parallel distribution of reliability, fault tolerance, scalability should be better, while reducing deployment and management burden. Most importantly, reducing the internal cross-process calls for the business logic layer overhead caused by improved overall performance. However, if a, some business logic must be independent of the deployment, management, b, the load distribution is more concentrated in a number of EJB, then the vertical distribution is essential. 3, for the Entity bean choose the right data storage solution first to make use of CMP to manage data storage, especially the simple, most business operations are inserted to modify the entity to delete, or insert update light enough youre busy, let alone Database migration issues. Second, for the simple one to one, one to many relationship, if your app server does not implement EJB2.0 specifications, consider using O / R mapping tool to help developers, like Cocobase, EJB creator, etc., can improve the lot of efficiency. For complex object store, no way, honestly write the code it ... ... 4, careful consideration EJBHome.findByXXX, listXXX the realization of a vision of millions of records to retrieve the table level, the result set is likely to be on the million, million section, which itself is a resource-consuming process; the same time for each record retrieved must do a findByPrimarykey, so many cross-process calls, the overhead can be imagined. Why do some people feel that the procedures used to achieve J2EE extremely unresponsive, lack of careful design is one of the main. 5, the use of abstract data structures to pass data such as, listOrde private void InitializeComponent this.Load + = new System.EventHandler; here PlaceHolder1.Controls.Add); is to PagingControl set to the current user control onto the page. If you do not want to use PlaceHolder, we can also use other container control, just add to the Controls collection on the line.
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