NDLI: A Highly Decoupled Front-End Framework for High Trafficked Web Applications

Content Provider	IEEE Xplore Digital Library
Author	Tucholka, A. Gurbani, P.
Copyright Year	2010
Abstract	Web applications are becoming more feature rich and ever more ubiquitous, while trying to address the needs of millions of users. Server-side scalability and performance are a serious matter as farms are unceasingly expanding for high growth sites. User Interface designers are looking for novel approaches to stimulate user engagement which results in more advanced and feature-rich clients. Remaining competitive requires companies to constantly push and release new features along with overall UI redesigns. The evolution of the web paradigm requires architectural changes that use models that will increase the flexibility and address the scaling problems in terms of performance, development process and demanding product requirements. This paper presents a web architectural design that decouples several layers of a web application, while delegating all presentation related routines to the client. To address organizational concerns in the design, client-side layers have been highly decoupled resulting with a well defined, natural responsibilities for each of them: structure - HTML, layout - CSS, behavior - JavaScript. The server exclusively produces data that is sent to the client and then mapped to the HTML templates taking advantage of interpreting data structure (presence of items, detecting sets of data, manual operations) for constructing result view to the user. The data produced by the server is client-independent enabling reuse of the server API by several clients. Overall, the strong responsibilities of identified layers allow parallelizing the development process and reduce operational friction between teams. The server-side part of the front-end framework is designed with the novel Printer-Controller-Abstraction (PCA) that was constructed as a variation of the Presentation-Abstraction-Controller (PAC) architectural pattern. The design keeps the high flexibility of the graph of controllers and introduces additional concepts like response caching and reuse and allows easy changes of the input and output formats.
Starting Page	32
Ending Page	36
File Size	2182447
Page Count	5
File Format	PDF
ISBN	9781424467280
e-ISBN	9781424467297
DOI	10.1109/ICIW.2010.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-09
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Java Protocols Data structures HTML Engines performance framework Web and internet services Bandwidth User interfaces flexible UI Cost function frontend Cascading style sheets architecture
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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