Least Outstanding Requests (LOR) Algorithm in Application Load Balancer

This research paper provides a comprehensive performance review of the Least Outstanding Request (LOR) algorithm used in Application Load Balancers (ALBs). The paper begins with an understanding of the LOR algorithm, explaining its role in optimizing traffic distribution across servers by prioritizing those with the least outstanding requests. A comparative analysis between LOR and other common load-balancing algorithms is presented, highlighting their respective strengths and weaknesses. The study offers an in-depth evaluation of LOR’s operational mechanics within ALBs, exploring its impact on system performance, scalability, and reliability. Additionally, the paper addresses the drawbacks and limitations of the LOR algorithm, particularly in highly dynamic and unpredictable traffic environments. Optimization strategies for enhancing LOR’s effectiveness are discussed alongside practical insights into fine-tuning its implementation. Finally, the paper presents case studies and real-world examples where LOR has been deployed, offering valuable perspectives on its practical applications and results. This research aims to contribute to a deeper understanding of LOR's capabilities and its potential for improving load balancing in modern distributed systems