Choreographed microservices talk to each other asynchronously, blindly broadcasting notifications into a service cloud. Those notifications are handled by whatever client services are interested. These systems eliminate many of the problems associated with orchestrated systems (which work more like synchronous function calls) and are typically much faster than orchestrated systems, but they have their own idiosyncrasies and implementation challenges. This practically-focused session explores the inherent problems in orchestrated systems, and then looks at how choreography can solve those problems. Three approaches to choreography: http-based, pub/sub messaging based, and brokerless swarming systems. We’ll introduce appropriate messaging architectures and frameworks and look at several practical examples.
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