| 词条 | Staged event-driven architecture |
| 释义 |
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 {{clarify-span|thread-based concurrency models|date=August 2013}} (i.e. locking, unlocking, and polling for locks), and decouples event and thread scheduling from application logic. By performing admission control on each event queue, the service can be well-conditioned to load, preventing resources from being overcommitted when demand exceeds service capacity. SEDA employs dynamic control to automatically tune runtime parameters (such as the scheduling parameters of each stage) as well as to manage load (like performing adaptive load shedding). Decomposing services into a set of stages also enables modularity and code reuse, as well as the development of debugging tools for complex event-driven applications. See also
References1. ^{{cite web| accessdate = 2013-09-03| location = | publisher = Harvard University| title = SEDA: An Architecture for Highly Concurrent Server Applications| url = https://img.sauf.ca/pictures/2015-11-20/eaf0277e0c3e6f5c9c81d2815c9dc082.pdf| quote = SEDA is an acronym for staged event-driven architecture, and decomposes a complex, event-driven application into a set of stages connected by queues.}} Bibliography{{Refbegin}}
| first1 = Matt | last1 = Welsh | first2 = David | last2 = Culler | first3 = Eric | last3 = Brewer | date = December 2001 | title = "SEDA: an architecture for well-conditioned, scalable internet services" in "SOSP '01 Proceedings of the eighteenth ACM symposium on Operating systems principles" | edition = 1st | publisher = Association for Computing Machinery | pages = 230–243 | isbn = 978-1-58113-389-9 | url = http://portal.acm.org/citation.cfm?id=502057 }}{{Refend}} External links
2 : Events (computing)|Software architecture |
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