DVA-C02 - Development with AWS Services - Section 1.3
Apply stateless design and choose between synchronous and asynchronous, tightly and loosely coupled patterns when writing application code.
Distinguish stateless from stateful application design and understand why externalising session state enables horizontal scaling. Choose between synchronous and asynchronous coupling, and between loose and tight coupling, based on latency, reliability, and throughput requirements.
Stateless applicationsLoose couplingSynchronous versus asynchronousSession state externalisation
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