STaleX: A Spatiotemporal-Aware Adaptive Auto-scaling Framework for Microservices
作者: Majid Dashtbani, Ladan Tahvildari
分类: cs.SE, cs.DC, cs.LG, eess.SY
发布日期: 2025-01-30
💡 一句话要点
提出STaleX框架以解决微服务自适应自动扩展问题
🎯 匹配领域: 支柱八:物理动画 (Physics-based Animation)
关键词: 微服务 自动扩展 控制理论 机器学习 资源优化 Kubernetes PID控制器
📋 核心要点
- 现有的集中式自动扩展方法无法满足微服务架构中每个服务的独特性能需求,导致资源分配不合理。
- STaleX框架通过结合控制理论和机器学习,针对每个微服务的时空特性进行动态资源调整,以优化性能。
- 实验结果显示,STaleX在微服务应用中实现了26.9%的资源使用减少,相较于传统的扩展方法显著提升了性能和成本效益。
📝 摘要(中文)
尽管云环境和自动扩展解决方案已广泛应用于传统单体应用,但在微服务架构中面临显著限制。微服务的动态和时空特性要求更高效的自动扩展策略。本文提出了一种自适应自动扩展框架STaleX,结合控制理论、机器学习和启发式方法,针对微服务的独特需求进行实时资源调整,以减少服务水平目标(SLO)违约。STaleX为每个服务采用加权比例-积分-微分(PID)控制器,权重根据监控单元动态调整,确保资源分配的持续优化。实验结果表明,与传统的Kubernetes水平Pod自动扩展器相比,STaleX在资源使用上减少了26.9%。
🔬 方法详解
问题定义:本文旨在解决微服务架构中自动扩展的不足,现有集中式方法无法有效应对每个服务的独特需求和相互依赖关系。
核心思路:STaleX框架通过引入时空特征,采用加权PID控制器为每个服务提供专门的自动扩展策略,确保资源分配的实时优化。
技术框架:STaleX的整体架构包括监控单元、加权PID控制器和资源分配模块。监控单元负责实时监测服务状态并调整权重,PID控制器则根据监测结果动态调整资源分配。
关键创新:STaleX的核心创新在于结合了控制理论与机器学习,通过动态调整权重来优化微服务的资源分配,这与传统的静态扩展方法有本质区别。
关键设计:在设计中,PID控制器的权重是根据服务的时空特性动态调整的,确保在不同负载情况下都能实现最佳性能。
🖼️ 关键图片
📊 实验亮点
实验结果表明,STaleX框架在微服务应用中实现了26.9%的资源使用减少,相较于传统的Kubernetes水平Pod自动扩展器(HPA),显著提高了性能和成本效益,证明了其在实际应用中的有效性。
🎯 应用场景
STaleX框架具有广泛的应用潜力,尤其适用于需要高效资源管理的微服务架构。其在云计算、在线服务和大规模分布式系统中的应用,可以显著提升资源利用率和降低运营成本,未来可能推动微服务自动扩展技术的进一步发展。
📄 摘要(原文)
While cloud environments and auto-scaling solutions have been widely applied to traditional monolithic applications, they face significant limitations when it comes to microservices-based architectures. Microservices introduce additional challenges due to their dynamic and spatiotemporal characteristics, which require more efficient and specialized auto-scaling strategies. Centralized auto-scaling for the entire microservice application is insufficient, as each service within a chain has distinct specifications and performance requirements. Therefore, each service requires its own dedicated auto-scaler to address its unique scaling needs effectively, while also considering the dependencies with other services in the chain and the overall application. This paper presents a combination of control theory, machine learning, and heuristics to address these challenges. We propose an adaptive auto-scaling framework, STaleX, for microservices that integrates spatiotemporal features, enabling real-time resource adjustments to minimize SLO violations. STaleX employs a set of weighted Proportional-Integral-Derivative (PID) controllers for each service, where weights are dynamically adjusted based on a supervisory unit that integrates spatiotemporal features. This supervisory unit continuously monitors and adjusts both the weights and the resources allocated to each service. Our framework accounts for spatial features, including service specifications and dependencies among services, as well as temporal variations in workload, ensuring that resource allocation is continuously optimized. Through experiments on a microservice-based demo application deployed on a Kubernetes cluster, we demonstrate the effectiveness of our framework in improving performance and reducing costs compared to traditional scaling methods like Kubernetes Horizontal Pod Autoscaler (HPA) with a 26.9% reduction in resource usage.