amazon com web services

, consisting of the active/standby structure. One is active and the other is standby, which usually writes data only to active. Once active is down, the standby is monitored by the VRRP protocol to elevate itself to active and become the new master. The machine that was shut down was manually repaired and turned into standby, or restored to its original structure. In order to determine from the outside which is active, a virtual IP (VIP) is required, that is, the active server will be assigned a

opportunity to understand the problems that may exist on the server. Similarly, hackers may use the fact of triggering a COM exception to block the server. Hackers realize that most exception code paths are not adequately tested and are often the cause of resource leaks or worse. To avoid this situation, the code on the server should be able to catch all exceptions and should return only universal errors. For XML

Author: Zhao xueshan, source: developerworks China, responsible editor: ye Jiang This article describes how to use the soap of Websphere information integrator content Edition The message mechanism is improved to provide message integrity and confidentiality. This article also explains how to integrate the existing security mechanisms of Websphere Iice into Web Services. Security Implementation. At the same

Ruby on Rails is a suddenly popular framework that acts as a catalyst for the ruby programming language. As Ruby experiences continue to succeed, developers began to seek to integrate their ruby applications with applications written in other languages. Rails provides excellent support for Web Services. This article introduces the Web service in rails, focusing o

Do you want to determine if an application server supports WEB service development work? The Apache Geronimo Application Server fully meets this requirement and is one of the newest projects for Apache Software Foundation. Java™ expert Kunal Mittal will introduce you to Geronimo's Web services functionality by demonstrating how to write and develop standard Java

the firewall for security purposes, the connection will become more complex and need to span two firewalls.Web Services uses the HTTP protocol and transmits XML data in plain text. Therefore, it has good firewall penetration performance. Heterogeneous platform-based applications XML is a cross-platform and cross-language data representation method. With the addition of common HTTP and other protocols, Web