August 2018
Intermediate to advanced
314 pages
8h 9m
English
Content preview from Java EE 8 Design Patterns and Best Practices
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Asynchronous pattern
When we think of microservices in practical terms, we immediately think of microservices implemented using the REST protocol. However, microservices based on a REST pattern are synchronous and therefore blocking. Sometimes, we need microservices that can be called asynchronously. The asynchronous mechanism is developed with techniques that are specific to each application (message queue, sending asynchronous events, and so on). Let's look at the following diagram:
Service A receives the request from the client and calls Service B in a synchronous manner. However, Service B depends on Service C and calls it asynchronously ...
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