scholarly journals Development of a Low-cost Server Management System Incorporating a Peer-to-Peer Method for Constructing a High-availability Server System

Author(s):  
Mitsuyoshi KITAMURA ◽  
Yoshihisa UDAGAWA ◽  
Hitoshi NAKAGOME ◽  
Youta SHIMIZU
2021 ◽  
Vol 6 (1) ◽  
pp. 43-51
Author(s):  
T Yudi Hadiwandra ◽  
Feri Candra

In the Industrial 4.0 era, almost all activities and transactions are carried out via the internet, which basically uses web technology. For this reason, it is absolutely necessary to have a high-performance web server infrastructure capable of serving all the activities and transactions required by users without any constraints. This research aims to design a high-performance (high availability) web server infrastructure with low cost (low cost) and energy efficiency. low power) using Cluster Computing technology on the Raspberry Pi Single Board Computing and Docker Container technology. The cluster system is built using five raspberry Pi type 4B modules as cluster nodes, and the Web server system is built using docker container virtualization technology. Meanwhile, cluster management uses Docker Swarm technology. Performance testing (Quality of Service) of the cluster system is done by simulating a number of loads (requests) and measuring the response of the system based on the parameters of Throughput and Delay (latency). The test results show that the Raspberry Pi Cluster system using Docker Swarm can be used to build a High Availability Server system that is able to handle very high requests that reach Throughput = 161,812,298 requests / sec with an Error rate = 0%.


2012 ◽  
Vol 1 (2) ◽  
pp. 15-27
Author(s):  
Harikesh Singh ◽  
Shishir Kumar

The traffic increasing in the network creates bulk congestion while the bulk transfer of data evolves. Performance evaluation and high availability of servers are important factors to resolve this problem using various cluster based systems. There are several low-cost servers using the load sharing cluster system which are connected to high speed networks, and apply load balancing technique between servers. It offers high computing power and high availability. A distributed website server can provide scalability and flexibility to manage with emergent client demands. Efficiency of a replicated web server system will depend on the way of distributed incoming requests among these replicas. A distributed Web-server architectures schedule client requests among the multiple server nodes in a user-transparent way that affects the scalability and availability. The aim of this paper is the development of a load balancing techniques on distributed Web-server systems.


2020 ◽  
Author(s):  
Devashish Sen ◽  
Rohini Srivastava ◽  
Nitin Sahai ◽  
R. P. Tewari ◽  
Basant Kumar

Author(s):  
Siti Nur Syafiqah Mohd Razak ◽  
Syed Farid Syed Adnan

2021 ◽  
Author(s):  
Ryu Kosuge ◽  
Takeru Kadoi ◽  
Kazuki Hirata ◽  
Keiichi Abe
Keyword(s):  

2017 ◽  
Vol 10 (17) ◽  
Author(s):  
Ditte Jacobsen ◽  
Jesper Glarborg Bahrenscheer

På Bioanalytikeruddannelsen på Professionshøjskolen Metropol har vi på ti-ugers modulet ”Molekylærbiologiske og genetiske analyser”, udviklet en digital portfolio som didaktisk redskab. Portfolien er blevet afprøvet på fire forløb, og har været med til at skabe større engagement blandt de studerende og øget transfer mellem teori og praksis. Artiklen tager afsæt i erfaringerne fra udvikling, anvendelse og evaluering af den digitale portfolio og peer to peer feedback. Portfolien er digital og tilknyttet Metropols Learning Management System. De studerende uploader individuelt ugentligt deres arbejde tilknyttet ugens fokusområde. En gang om ugen giver de studerende hinanden peerfeedback på ugens arbejde. Anvendelsen af portfolien har øget de studerendes kompetencer til at give og anvende peerfeedback. De studerende angiver, at de opnår en høj grad af læring i forbindelse med arbejdet med portfolien, bl.a. fordi de oplever, at det forpligter, at de skal dele portfolien og feedbacken med en medstuderende. Desuden oplever vi som undervisere, at de studerendes faglige niveau er blevet væsentligt forøget blandt de studerende, der aktivt har benyttet portfolien i samspil med feedback.


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