Application high availability

An application should be built with high availability as one of the most important architectural concerns. Some of the important application-related, high-availability practices are mentioned next:

• An application should implement appropriate exception handling to gracefully recover and inform stakeholders about the issue
• An application should try to perform the same operation again for a fixed interval and a certain number of times before exiting in the event of an error or exception
• An application should have the built-in timeout capability to decide that an exception cannot be recovered from
• Maintaining logs and writing logs for all errors, exceptions, and execution should be adopted within the application
• Applications should be profiled to find their actual resource requirements in terms of compute, memory, and network bandwidth for a different number of users