** NIFI 개념을 설명할 때 처음 나옴 ** 1. 영어 원본(위키피디아) The staged event-driven architecture (SEDA) refers to an approach to software architecture that decomposes a complex, event-driven application into a set of stages connected by queues.[1] It avoids the high overhead associated with thread-based concurrency models (i.e. locking, unlocking, and polling for locks), and decouples event and thread scheduling..