Industry Best Practices for Microservice Integration

基于微服务的体系结构是一种很有前途的新型软件体系结构。微服务是向客户端提供业务功能的服务。微服务是相互独立地开发的，通常由不同的团队开发，使用不同的技术堆栈来提高(连续)交付速度。在以前的应用程序需要在更改后完全更换系统的情况下，微服务承诺提供增量交付，从而提高创新速度。实践者认为，这种更高的交付速度使微服务成为构建现代云应用程序的更合适的方法，而不是以前的更单一的方法。即使它们是分离的，微服务也需要相互通信，因为它们提供的业务功能通常涉及到跨越所有微服务的工作流。微服务的整合是一个研究还不够充分的话题。通过对这一课题的研究，我们希望使基于微服务的系统的设计和实现变得更容易和更可预测。我们建议首先对从业者如何以及为什么整合微服务进行理论构建。我们使用定性调查作为我们久经考验的研究方法，以从行业中获取当前的最佳实践。其结果将是微服务集成的初始理论，我们计划将其作为一本最佳实践手册，以支持我们的发现的实际应用。我们计划首先通过参与性行动研究对初始理论进行评估，然后通过多案例研究进行评估。在参与性行动研究评估中，我们与行业合作伙伴一起在他们的一个项目中应用了最佳实践手册。从行动研究中学到的知识将被反馈到手册中。在接下来的案例研究评估中，我们将向行业合作伙伴提供手册，供他们自己在项目中使用。在这项研究结束时，我们将创建一个植根于行业最佳做法的微服务整合理论，并通过参与性行动研究和案例研究对其进行审查。使用两种不同的方法评估该理论所固有的方法学三角关系将确保高质量的研究结果，而以手册形式铸造该理论将确保其行业相关性。

Microservice-based architectures are a new and promising type of software architecture. A microservice is a service that provides a business function to clients. Microservices are developed independently of each other, often by different teams, using different technology stacks for the purpose of improving (continuous) delivery speed. Where previously applications required full system replacement upon a change, microservices promise incremental delivery and hence increased innovation speed. Practitioners argue this increased delivery speed makes microservices a more suitable approach for building modern cloud applications than the more monolithic approaches from before. Even though they are decoupled, microservices need to communicate with each other, because the business functions they provide are often involved in workflows that go across all microservices. The integration of microservices is a topic that has seen not enough research yet. Studying the topic, we hope to make the design and implementation of microservices-based systems easier and more predictable. We propose to first perform theory building of how and why practitioners integrate microservices. We use the qualitative survey as our tried and proven research method for eliciting current best practices from industry. The result will be an initial theory of microservice integration that we plan to cast as a best practices handbook to support the practical application of our findings. We plan to evaluate the initial theory first by using participatory action research and then by using multiple-case case study research. In the participatory action research evaluation, we apply the best practices handbook together with an industry partner in one of their projects. The learnings from the action research will be fed back into the handbook. In the following case study research evaluation, we will provide the handbook to industry partners for use in their projects on their own. At the end of this study, we will have created a theory of microservices integration rooted in industry best practices and that has been vetted using both participatory action research and case study research. The methodological triangulation inherent in using two different methods for evaluating the theory will ensure a high quality of the research results and the casting of the theory in handbook form will ensure its industry relevance.