Improvement And Implementation Of Video And Mobile Application Service Based On Open Source Learning System

With the advent of knowledge econom y, our st udy mode encounters unprecedented impact,al l kinds of new learning m odes appear like tide,but among these new learning styl es,the most striking one must be web-ba sed learning,which developed as the improvem ent of network technology,als o called online learning or e-lea rning.Sakai,as one of the typical representative of collaborative onl ine learning platform,is widely empl oyed by lots of universities and scientifi c research institutions in the domesti c and oversea s,because of it’s feature of open source,totally free and rich functionalit y.But along with the continuous renewa l of concept of practical teaching,especially Moocs and SPOC.Online platform will be faced with highe r requirements,such as fragme ntation of knowledge management, fully stimulate learne rs’ active participation and support of mobil e learning etc.Ba sed on the analysis of mainstream learning platform,and acc ording to demand of the new teaching idea, two practical issues are put forward and be tri ed t o be solved in this t hesis,namely, interactive vi deo and real-time interactive mobile client applicati on.first of al l,the thesis descri bes the fram ework of S akai-open source online learning plat form based on deeper analysis,and provides a clear sense of operating mechanism and s tructure of the whole project.wi th regard to the i nterac ti ve video component s,on the bas is of Kaltura-open source video platform architecture, the thesis make a ful l use of the development kit interface t o realise seamless docking with Sakai sys tems whi ch solves the problem of large concurrent access pressure on streami ng video in Sakai sys tem.With Kalt ura cuepoint interface,the interactive video quiz and key frame video search based on captions also be real iz ed,which aims at improving the user’s learning experi ence.To meet the demands of knowledge fragmentation and real-time int eracti ve feedba ck,part of rea l-time interactive functions on mobile applicat ion are metioned in the thesis,the main trai n of the thought is to split the Sakai logi c business acc ording to mi cro-ser vice architecture,wechat mobil e application are used to display the information of logic proces s results,on acc ount of its advant age of convenient m essage release way, strong stickiness and real-time int eraction.Finally,from t he perspec tive of the overall deployme nt architecture,this thesis describes the relationship of main subsys tems about how to ex ecute data exchange,and explains how to deal wi th the large- scale user concurrent access on micro-service architecture.The functions metioned above all have been reali zed,and the cluster deployment archit ecture has been optimized according t o the new design scheme.Currently,The cl uster is runni ng well, with the increasement of visit ors, the architect ure can be dyn am ic ex tended based on t he design of this thesis.The whole research work of this i ssue has reached the expected design goal.