1. SQS a Web Service 2. uses 256KB of text in any format. 3. acts as a buffer between component producing and saving data. 4. SQS ensures delivery of each message at least once , and supports multiple readers and writers interacting with same queue and no coordination required. 5. FIFO is not guaranteed. 6. 12hrs visibility time out. 7. Billed at 64kb “chunks”—4 chunks per...
10 Feb 2016
DDD Definitions
Entity (a thing with distinct and independent existence.) An object fundamentally defined not by its attributes, but by a thread of continuity (Lifecycle) and Identity. Details: * Objects are represented in Attributes and Methods. * When an objects changes its attributes but remain same object, it is called an Entity. *Entity is mutable because it can change it’s attributes without changing...
