HotRing - A Hotspot-Aware In-Memory Key-Value Store

Explore the innovative HotRing key-value store designed to address hotspot issues in in-memory systems. Delve into the challenges of hotspot-awareness in existing key-value stores and discover how HotRing optimizes performance for highly skewed workloads. Learn about the ordered-ring hash index structure, which improves access to hot items, and the lightweight strategy for detecting hotspot shifts at runtime. Understand the comprehensive lock-free design that enables HotRing to leverage multi-core architectures for massively concurrent requests. Examine the experimental results showcasing HotRing's significant performance improvements compared to other in-memory key-value stores on skewed workloads. This conference talk, presented at FAST '20 by Le Cai from Alibaba Group, offers valuable insights into cutting-edge solutions for enhancing the efficiency and reliability of in-memory key-value stores in the face of increasingly serious hotspot issues.

Introduction
Problem Statement
Solutions
Hash Index
Algorithm
Problems
Strategy
Rehashing
Evaluation
Comparisons
Performance
Stability
Latency
Conclusion