AI 中文总结
针对数字医疗中边云连续体的服务部署问题，提出三层注册表架构，利用本地和远程私有注册表提升部署可靠性与性能，实验证明其优于远程公共注册表。
AI 中文摘要
当今的数字医疗服务依赖于各种必须持续可访问的应用程序和功能。云计算通过公共网络提供对这些服务的全球访问，但与本地操作相比，这通常也会引入更高的延迟、更高的带宽消耗和额外的安全风险。边缘计算通过将云服务部署到更靠近最终用户和数据源的位置来缓解这些挑战，从而提高对网络中断的恢复能力，并减少延迟、带宽使用和暴露于安全威胁的风险。然而，服务部署通常依赖于集中式注册表服务器的可用性。因此，如果网络连接或注册表服务器本身变得不可用，目标边缘节点上的服务部署可能会失败。为了解决这个问题，我们提出了一种三层注册表架构，以提高部署可靠性和服务可用性，将DockerHub视为远程公共注册表，将基于MEC的场外注册表视为远程私有注册表，将基于LAN的场内注册表视为本地私有注册表。通过测量与估计部署时间、造成的网络和计算负载以及能耗相关的指标，分析了性能和效率，同时从不同层级部署所需的纳米服务。实验结果表明，除了对网络中断的容忍度提高外，本地私有注册表和远程私有注册表在部署性能上也优于远程公共注册表。研究结果强调了邻近感知服务分发在提高服务部署的弹性、性能和效率方面的有效性。
英文摘要
Today's digital healthcare services rely on various applications and functions that must be continuously accessible. Cloud computing enables global access to these services through public networks, which often also introduce increased latency, higher bandwidth consumption, and additional security risks compared to local operation. Edge computing mitigates these challenges by deploying cloud services closer to the end users and data sources, thereby improving resilience to network disruptions and reducing latency, bandwidth usage, and exposure to security threats. However, service deployment typically relies on the availability of centralized registry servers. Consequently, if the network connection or the registry server itself becomes unavailable, service deployment at the target edge node may fail. To address this, we propose a three-tier registry architecture to enhance deployment reliability and service availability, considering DockerHub as a remote public registry, an MEC-based off-premises registry as a remote private registry, and a LAN-based on-premises registry as a local private registry. The performance and efficiency are analyzed through measurements related to the estimated deployment time, inflicted network and computational load, and energy consumption, while the required nanoservices are deployed from different tiers. The experimental results indicate that alongside the improved tolerance to network disruptions, the local private and remote private registries also outperform the remote public registry in the deployment performance. The findings highlight the effectiveness of proximity-aware service distribution in improving the resilience, performance and efficiency of service deployment.
