System failure needs to be predicted in advance, and in the case of failure incidence, you should have an automated response for system recovery, which is called system self-healing. Self-healing is the ability of the solution to automatically recover from failure. A self-sealing system detects failure proactively and responds to it gracefully with minimal customer impact. Failure can happen in any layer of your entire system, which includes hardware failure, network failure, or software failure. Usually, data center failure is not an everyday event, and more granular monitoring is required for frequent failures such as database connection and network connection failures. The system needs to monitor the failure and act to recover.
To handle failure response, first, you need to identify Key Performance Indicators (KPIs) for your application and business. At the user level, these KPIs may include the number of requests served per second or page load latency for...