March 2025
Intermediate to advanced
546 pages
14h 40m
English
Content preview from Fundamentals of Software Architecture, 2nd Edition
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Chapter 14. Service-Based Architecture Style
Service-based architecture is a hybrid variant of the microservices architectural style and is considered one of the most pragmatic styles available, mostly due to its flexibility. Although service-based architecture is distributed, it doesn’t have the same level of complexity and cost as other distributed architectures (such as microservices or event-driven architecture), making it a popular choice for business-related applications.
Topology
The basic topology of service-based architecture follows a distributed macro-layered structure consisting of a separately deployed user interface; separately deployed, remote, coarse-grained services; and, optionally, a monolithic database.
Although Figure 14-1 illustrates the basic topology of this style, it can vary greatly, including using separate UIs and separate databases. This chapter will describe these topology variants in detail.
Services within this architectural style typically represent a specific domain or subdomain with a system, so they are called domain services. Domain services are generally coarse-grained and represent some portion of the system’s functionality (such as order fulfillment or order shipping). They are typically independent of each other and separately deployed. Services are typically deployed much like any monolithic application would be, so they do not require containerization (although deploying a domain service in a container such as Docker or Kubernetes is ...
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