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Event-driven architecture (EDA) is a software design pattern that enables an organization to detect βeventsβ or important business moments
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Standard queues guarantee that a message is delivered at least once and duplicates can be introduced into the queue. FIFO queues ensure a message is delivered exactly once and remains available until a consumer processes and deletes it; duplicates are not introduced into the queue.
by recieving a response, else will throw an error.
Event Notification , It is the most basic pattern describing event-centric communication facilitated by the Event Store.
Unit Tests are the most basic tests you will write Your unit test will interact with this class directly, passing various Order values to it, and verifying the tax has been calculated properly.
Service Tests These tests verify the contract of services, that is given certain inputs, the service produces a certain output.
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How To: Use SNS and SQS to Distribute and Throttle Events
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