콘텐츠 최적화 작업을 위한 오버레이 서비스 망은 액티브 노드들로 구성하며, 액티브 노드는 기존에 존재하는 노드들에 액티브 실행환경을 통해 구성할 수 있다. 액티브 실행환경은 노드 운영체제 상위에 설치되어 노드가 액티브 네트워크의 기능을 수행하도록 하는 환경을 제공해준다. 본 논문에서는 온디맨드(On-Demand)로 콘텐츠를 변환하고 사용자의 요구에 민감하게 대처할 수 있을 뿐 아니라 여러 노드로 작업을 분산시킬 수 있으므로 기존 시스템이 가지는 트래픽 병목 현상 및 서버 과부하 문제와 같은 중앙 서버 문제를 해결할 수 있다. 또한 액티브 네트워크 기술의 동적 코드 다운로드 기능을 이용하여 망 내에 존재하는 액티브 라우터에 필요한 콘텐츠 최적화 코드를 설치하거나 새로운 액티브 노드를 추가함으로써 기능을 망에 분산시킨다.
KSP Keywords
On-demand
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