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All Journal JOIN (Jurnal Online Informatika) Sistemasi: Jurnal Sistem Informasi InComTech: Jurnal Telekomunikasi dan Komputer JOURNAL OF APPLIED INFORMATICS AND COMPUTING Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURIKOM (Jurnal Riset Komputer) Jurnal Sistem Cerdas TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Journal of Information Systems and Informatics Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) INTEGRITAS : Jurnal Pengabdian Indonesian Journal of Electrical Engineering and Computer Science Journal of Computer Networks, Architecture and High Performance Computing REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Journal La Multiapp KLIK: Kajian Ilmiah Informatika dan Komputer Paradigma EPSILON: Journal of Electrical Engineering and Information Technology J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Eduvest - Journal of Universal Studies Ranah Research : Journal of Multidisciplinary Research and Development Jurnal INFOTEL Telecommunications, Networks, Electronics, and Computer Technologies (TELNECT) Integrated : Journal Of Information Technology and Vocational Education
Galura Muhammad Suranegara
Universitas Pendidikan Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Neuroscience Public Health Social Sciences Transportation Other

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Journal : JOURNAL OF APPLIED INFORMATICS AND COMPUTING

 1 
Evaluation of Scalability and Resilience of Hyperledger Fabric in Blockchain Implementation for Diploma Management Pebriyanti, Cahyani; Suranegara, Galura Muhammad
Journal of Applied Informatics and Computing Vol. 9 No. 3 (2025): June 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v9i3.9262

Abstract

This research aims to evaluate the performance of a Hyperledger Fabric-based blockchain system implemented for digital diploma management. The system is tested using the Caliper benchmark tool in various network and scalability scenarios, including normal conditions (baseline), network delay of 50ms, 100ms, 200ms, and 500ms; packet loss of 1%, 5%, 10%, and 15%; bandwidth limitation of 5 Mbps; high transaction load (scalability standard and scalability optimized); and extreme conditions in the form of Byzantine attacks with malicious nodes of 10%, 30%, and 50%. The evaluation was conducted using four key metrics: transaction success rate, failure rate, average transaction latency, and throughput (TPS). The system recorded high performance under normal network conditions with a success rate of 99.8%, latency of 0.89 seconds, and throughput of 9.7 TPS. Network disruptions such as delay, packet loss, and bandwidth limitation had only a minor impact, with the success rate remaining above 99% and latency gradually increasing. High load in the scalability scenario caused latency to increase to 27.21 seconds and failure rate to rise, but improved significantly after chaincode optimization. Meanwhile, the Byzantine scenario showed a drastic drop in performance with the success rate decreasing to 12.83% and the failure rate increasing to 87.17%. These results show that the Hyperledger Fabric-based digital diploma management system is resilient to common network disruptions and reliable at medium scale, but still requires strengthening the consensus mechanism to deal with extreme conditions and maintain reliability in environments that are not fully trusted.
Performance of Load Balancing Algorithms on Homogeneous and Heterogeneous Servers in On-Premise Environments Avia Aulia Faridah, Tsabitah; Suranegara, Galura Muhammad
Journal of Applied Informatics and Computing Vol. 10 No. 1 (2026): February 2026
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v10i1.11614

Abstract

This research evaluates the performance of Round Robin, IP Hash, and Random Allocation algorithms in a homogeneous server environment, as well as Least Response Time, Least Connection, and Weighted Least Connection algorithms in a heterogeneous server environment implemented on on-premise servers. This study was motivated by the need to improve traffic management efficiency in local server infrastructure, where system performance is greatly influenced by resource diversity and distribution strategies. The experimental method was applied using NGINX and NGINX Plus as load balancing platforms, with Apache JMeter as a testing tool with low, medium, and high load test scenarios, while Netdata monitored the load distribution in real-time. Performance evaluation was based on six key metrics: throughput, latency, error rate, load distribution, CPU usage, and memory consumption. The results show that in a homogeneous environment, static algorithms such as Round Robin, IP Hash, and Random Allocation maintain stable performance with consistent throughput and minimal latency. Conversely, in a heterogeneous environment, dynamic algorithms, such as Weighted Least Connection, achieve lower latency and more balanced resource utilization. These findings highlight that algorithm selection must match system characteristics: static algorithms are more suitable for small-scale, uniform deployments, while dynamic approaches are recommended for heterogeneous or large-scale systems that require adaptive load management. Overall, weight-based dynamic approaches demonstrate superior scalability and resilience under high workloads.
Performance Evaluation of Multi-Cloud Failover Using Domain Name System Zaelani, Cahya; Muhammad Suranegara, Galura
Journal of Applied Informatics and Computing Vol. 10 No. 1 (2026): February 2026
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v10i1.11788

Abstract

This research implements and analyzes a multi-cloud failover system using DNS failover via AWS Route53 and Nginx reverse proxy load balancers on Google Cloud (primary) and Herza Cloud (backup), with AWS EC2 as shared backend web servers. An Ubuntu control node orchestrates deployments across these providers, enabling automatic traffic rerouting from the primary to secondary load balancer upon failure detection via health checks. Performance testing employed wrk benchmarking (4 threads, 250 connections, 300s) and Python monitoring scripts under baseline and failover scenarios with DNS TTLs of 30s, 60s, and 120s. Baseline yielded 2,291.81 req/s throughput, 108.42ms average latency, and 231.15ms p99 latency. Failover results showed TTL 30s optimal for reliability (152.65s downtime, 48.62% failed requests, 30.53s average recovery), outperforming TTL 60s (243.92s downtime, 83.48% failures due to health check mismatch) and TTL 120s (186.88s downtime) and TTL 30s is recommended for high availability in low-budget SMEs, balancing reduced downtime against DNS overhead. However, this approach is limited to small-scale infrastructure.
Co-Authors A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Afina Carmelya, Anindya Agnesia, Gisella Agustin, Sarah Ahmad Fauzi Ahmad Fauzi Ash Shiddiq, Reza Nurfaudzan Avia Aulia Faridah, Tsabitah Basuki, Akbari Indra Dani Prasetyo Adi, Puput Dewi Dewi, Tarisa Citra Dianti, Palda Puspita Diky Zakaria Dinata, Hane Yorda Dwi Wahyu Lestariningsih Dwitami, Ghalda Azzahra Elysa Nensy Irawan Endah Setyowati Endah Setyowati Fadhila, Esa Noer Fadillah, Khoerunnisa Nur Faudzan, Muhammad Iqbal Fauzi Ahmad Muda Fauzi, Sadam Fauziyah Rhaudhatul Jannah Fujiyanti, Vina Gumelar, Ega Restu Hadi Putri, Dewi Indriati Hafiyyan Hamdani, Nizar Alam Helfy Susilawati Ichwan Ichwan Nul Ichsan Istiqomah, Mutia Jamilah, Nur Asy-Syifa Jannah, Fauziyah Rhaudhatul Jayadinata, Asep Kurnia Kheqal, Abdul Laili, Adisty Nurrahmah Larasati, Sifa Liptia Venica Maranatha, Jojor Renta Meiliya Cahya Yustina Mirza Etnisa Haqiqi, Mokhamamad Muhammad Gani Baihaqi Darussalam Muhammad Husni Muttaqin Nikawanti, Gia Paramaputra, Arya Pandya Pebriyanti, Cahyani Perkasa, Aldewo Dillon Praptawilaga, Muhamad Fadly Rizqy Pratama, Hafiyyan Putra Pratama, Herdi Rizky Putri, Adhwa Alifia Putri, Chairunisa Rahma Putri, Nova Nurul Rahman, Fadhila Dwi Restyasari, Nissa Reza Nurfaudzan Ashsiddiq Sanada, Pratiwi Satyawan, Arief Suryadi Subagja, Banda Suprih Widodo, Suprih Suryadi Satyawan, Arief Syaifullah, Muhammad Wildan Syifaul Fuada Ulfa, Husnul Uli Sitinjak, Domma Vormes Gema Merdeka winda pratiwi Yovanka, Diva Nuranty Yunita Sari Zaelani, Cahya