• KIPS Transactions on Software and Data Engineering
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• v.9 no.6
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• pp.177-186
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• 2020

Recent advances in deep learning technology have improved image recognition performance in the field of computer vision, and serverless computing is emerging as the next generation cloud computing technology for event-based cloud application development and services. Attempts to use deep learning and serverless computing technology to increase the number of real-world image recognition services are increasing. Therefore, this paper describes how to develop an efficient deep learning based image recognition service system using serverless computing technology. The proposed system suggests a method that can serve large neural network model to users at low cost by using AWS Lambda Server based on serverless computing. We also show that we can effectively build a serverless computing system that uses a large neural network model by addressing the shortcomings of AWS Lambda Server, cold start time and capacity limitation. Through experiments, we confirmed that the proposed system, using AWS Lambda Serverless Computing technology, is efficient for servicing large neural network models by solving processing time and capacity limitations as well as cost reduction.

• The Transactions of the Korea Information Processing Society
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• v.13 no.2
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• pp.60-75
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• 2024

The demand of users, who want to focus on the core functionality of their applications without having to manage complex virtual environments in the cloud environment, has created a new computing model called serverless computing. Within the serverless paradigm, resource provisioning and server administration tasks are delegated to cloud services, facilitating application development exclusively focused on program logic. Serverless computing has upgraded the utilization of cloud computing by reducing the burden on cloud service users, and it is expected to become the basic model of cloud computing in the future. A serverless platform is responsible for managing the cloud virtual environment on behalf of users, and it is also responsible for executing serverless functions that compose applications in the cloud environment. Considering the characteristics of serverless computing in which users are billed in proportion to the resources used, the efficiency of the serverless platform is a very important factor for both users and service providers. This paper aims to identify various factors that affect the performance of serverless computing and analyze the latest research trends related to it. Drawing upon the analysis, the future directions for serverless computing that address key challenges and opportunities in serverless computing are proposed.

• The Journal of Korean Institute of Next Generation Computing
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• v.14 no.5
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• pp.7-18
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• 2018

Recently, serverless computing is spotlighted. Because it supports the development of application based on micro-service. Micro-service means a small-scale service that can operate independently. Applications with micro-service units have the advantage of enabling individual updates, easy and fast deployment. In addition, it has the advantage of supporting various languages and platforms for each service. Therefore many enterprise are trying to change from monolithic architecture to micro-service based architecture. However, there is a lack of research on methods and baseline for micro-service construction. In this paper, a method is proposed to construct the micro-service unit by analyzing UML design in monolithic application. It also shows the proposed approach can reconstruct monolithic application into micro-service based unit by implementing the constructed micro-services in a real serverless platform environment. In addition, the results of the comparative evaluation with the related studies are presented.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.33 no.4
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• pp.661-670
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• 2023

With the emergence of serverless computing paradigm and the innovations of cloud technology, the structure of backend server infrastructure has evolved from on-premises to container-based serverless computing. However, an access control on the server still heavily relies on the traditional SSH protocol, which poses limitations in terms of security and scalability. This hampers user convenience and productivity in managing server infrastructure. A web shell is an interface that allows easy access to servers and execution of commands from any device with a web browser. While hackers often use it to exploit vulnerabilities in servers, we pay attention to the high portability of web shell technology for server management. This study proposes a novel proxy-based server management framework utilizing web shell technology. Our evaluation demonstrates that the proposed framework addresses the drawbacks of SSH without additional overhead, and efficiently operates large-scale infrastructures in diverse computing environments.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.52-55
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• 2019

최근에 이슈가 되고 있는 서버리스 컴퓨팅 시스템은 실행 요청이 있을 때만 동적으로 머신 자원의 할당으로 해당되는 마이크로 펑션을 실행되고 그 요청이 증가할 경우 그에 비례하는 자원을 할당하여 동시에 처리하는 방법으로 자원 사용률과 서비스 확장성이 매우 좋은 장점을 갖는다. 그러나 서버리스 컴퓨팅 시스템 관련 개발자는 여전히 마이크로 펑션에 대한 관리 측면에 대한 다양한 대응을 스스로 해결해야 하는 여러가지 문제점을 가지고 있다. 그래서 본 논문은 서버리스 컴퓨팅 시스템의 효율적인 마이크로 펑션 관리와 마이크로 펑션의 실행환경설정에서 발생되는 불필요한 자원 낭비를 최소화하는 방안을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.113-115
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• 2020

서버리스 컴퓨팅에는 가상머신보다 가벼운 장점을 지닌 컨테이너 기술이 많이 사용되었다. 하지만 여러 사용자들의 어플리케이션이 하나의 서버 인스턴스를 공유해서 사용하기 때문에, 취약점으로 인해서 여러 문제점이 생길 수 있다. 이에 서버리스 컴퓨팅 제공자들은 서버리스 컴퓨팅에 적합하며 보안을 강조한 기술들을 발표하고 있다. 대표적으로 구글에서 개발한 샌드박스 형태의 컨테이너 런타임을 제공하는 gVisor 와 오픈스택 재단에서 개발한 Kata Containers 가 있다. 본 논문에서는 미리 준비된 라이브러리를 공유하여 서버리스 컴퓨팅의 콜드 스타트를 완화시키는 관점에서, gVisor와 Kata Containers 환경에서 라이브러리를 불러올 때 기존의 도커 컨테이너 환경과의 차이를 비교하고 분석한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.426-428
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• 2021

반도체 디스플레이 기술과 정보통신 기술의 발전으로 디지털 사이니지는 기존의 단순 옥외 광고매체에서 탈피하여 이용자 맞춤 광고나 정보를 제공 및 스마트폰과 연동하여 콘텐츠 제공 가능한 시스템으로 발전하고 있다. 본 연구에서 디지털 사이니지의 작동오류의 위험성을 낮추며 비용절감을 할 수 있도록 제어 서버의 역할을 축소시키고 엣지 영역으로 서버의 역할을 최대한 분담하는 서버리스 기반 디지털 사이니지 시스템 구축 가능성에 대해 연구한다.