application maintenance services

Amazon AWS (Amazon Web Services) Free EC2 application, awsec2 I have long heard that AWS can apply for free, but I need to bind a credit card. I recently applied for one. It was free, or I deducted 6.28, And then I checked it online. It was used for verification. It seems that the service will be refunded when it expires. The key is that I didn't enter my credit card payment password for the whole process

If we regard the organic composition of an application system as a human body, the hardware is the human brain and body, and the software is the human hand and foot; good hardware, in the end, appropriate software should be used to make full use of it. software is the most exposed to users. Good and bad software is crucial to users' operation experience and work efficiency!I have been engaged in the development of PLC software, MES system and communic

(resolve and rejected).* 2.catch (Errorcallback)--promise.then (NULL, errorcallback) shortcut* 3.finally (callback)--allows you to see whether a promise is being executed or rejected, but does not modify the last value value.* This can be used to do work that frees up resources or cleans up useless objects, whether promise is rejected or resolved. For more information, see the full documentation specification.*/return defrred.promise;} return service;});/* Apply the service in the controller */

// ================================================ ======================================= // //// // Function getsqlservers // //// Obtain all the SQL services of the Local Machine // Purpose get the local SQL servers // //// // Argment // //// // Return local SQL Server LIST // //// // Author chenhuicong 2010-12-24 // //// // ================================================ ======================================= // Export prototype list getsql