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Spring Cloud provides tools for developers to quickly build some of the common patterns in distributed systems and it enables engineers to quickly develop cloud-native applications. One of the features is to maintain application configurations ouddtside the application. This will enable configuration change without restarting microservice application.
A REST API developer will have two requirements related to error handling.
Both requirements can be addressed by using RestControllerAdvice annotation in Spring.
Please go through the earlier article before reading this article. I will assume the strategy defined in first article is clear before reading ahead. This article will focus on multiple releases in parallel. A software team working on two or more releases at a time may refer to this strategy.
Let’s consider two releases starting in parallel from today.
Optional is a container object that may or may not contain a non-null value. If a value is present, isPresent() will return true and get() will return the value.
Package : java.util
public final class Optional<T>
extendsObject