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Tytuł:
Designing multithreaded software based on concurrency in the problem domain
Autorzy:
Sanden, Bo I.
Powiązania:
https://bibliotekanauki.pl/articles/1954582.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska
Tematy:
concurrency
event-driven software
event sequence
reactive software
thread architecture
threading
konkurencja
oprogramowanie sterowane zdarzeniami
sekwencja zdarzeń
oprogramowanie reaktywne
architektura
nawlekanie
Opis:
Event-sequence modeling is a thread-architectural style for event-driven software. It bases the set of threads in a multithreaded program on an event-sequence model of the problem domain. Each event sequence is a time-ordered set of event occurrences in the domain. (It is often defined by a state machine.) An event-sequence model is a set of event sequences that together cover all relevant event occurrences in the domain. Occurrences in one event sequence are generally concurrent with those in other sequences. The event-sequence modeling approach leads to architectures consisting of threads, each based on an event sequence, and shared objects. The threads can run concurrently on different cores/processors except when they must have exclusive access to some shared object. This paper defines these concepts and illustrates them with examples.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2021, 25, 2; 183-201
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Staged event-driven architecture as a micro-architecture of distributed and pluginable crawling platform
Autorzy:
Siwik, L.
Włodarczyk, K.
Kluczny, M.
Powiązania:
https://bibliotekanauki.pl/articles/305335.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
web crawler
composable software
event–driven architecture
event-driven processing
SEDA
distributed web crawling framework
Opis:
Crawling systems available on the market are usually closed solutions dedicated to performing a particular kind of task. There is a meaningful group of users, however, which require an all–in–one studio, not only for executing and running Internet robots, but also for (graphical) (re)defining and (re)composing crawlers according to dynamically changing requirements and use–cases. The Cassiopeia framework addresses the above idea. The crucial aspect regarding its efficiency and scalability is concurrency model applied. One of the promising models is staged event–driven architecture providing some useful benefits, such as splitting an application into separate stages connected by events’ queues–which is interesting, taking into account Cassiopeia’s assumptions regarding crawler (re)composition. The goal of this paper is to present the idea and PoC implementation of the Cassiopeia framework, with special attention paid to its crucial architectural element; i.e., design, implementation, and application of staged event–driven architecture.
Źródło:
Computer Science; 2013, 14 (4); 645-665
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cassiopeia – Towards a Distributed and Composable Crawling Platform
Autorzy:
Siwik, L.
Marcjan, R.
Włodarczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/308019.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
composable software
distributed Web crawling framework
event–driven architecture
event-driven processing
SEDA
Web crawler
Opis:
When it comes to designing and implementing crawling systems or Internet robots, it is of the utmost importance to first address efficiency and scalability issues (from a technical and architectural point of view), due to the enormous size and unimaginable structural complexity of the World Wide Web. There are, however, a significant number of users for whom flexibility and ease of execution are as important as efficiency. Running, defining, and composing Internet robots and crawlers according to dynamically-changing requirements and use-cases in the easiest possible way (e.g. in a graphical, drag & drop manner) is necessary especially for criminal analysts. The goal of this paper is to present the idea, design, crucial architectural elements, Proof-of-Concept (PoC) implementation, and preliminary experimental assessment of Cassiopeia framework, i.e. an all-in-one studio addressing both of the above-mentioned aspects.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 2; 79-89
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
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