Continuous Architecture in Practice: Software Architecture in the Age of Agility and DevOps by Murat Erder & Pierre Pureur & Eoin Woods

Author:Murat Erder & Pierre Pureur & Eoin Woods [Murat Erder]
Language: eng
Format: epub, mobi
Publisher: Addison-Wesley Professional
Published: 2021-06-06T16:00:00+00:00

Figure 5.6 TFX component diagram

To avoid a major rework of the TFX application, should this switch become necessary, the team decides to use a standard library for all interservice interactions. Initially, this library implements synchronous interactions using the REST architectural style. However, it can be switched to an asynchronous mode for selected interservice communications should the need arise. To mitigate concurrency issues that may be introduced by this switch, the library will use a message bus23 for asynchronous requests. In addition, the library implements a standard interface monitoring approach in order to make sure that interservice communication bottlenecks are quickly identified (see Figure 5.7). An important characteristic of the TFX asynchronous service integration architecture is that, unlike an enterprise service bus (ESB) that is usually used to implement a service-oriented architecture (SOA), the message bus used in TFX has only one function, which is to deliver messages from publishing services such as the Payment Service to subscribing services such as the Payment Gateway. Any message processing logic is implemented in the services that use the message bus, following what is sometimes called a smart endpoints and dumb pipes24 design pattern. This approach decreases the dependency of services on the message bus and enables the use of a simpler communication bus between services.

23 For example, AWS EventBridge.

24 Martin Fowler, “Microservices.” https://martinfowler.com/articles/microservices.html#SmartEndpointsAndDumbPipes

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.