System Design Codex's resource offers insights, tutorials, and resources for software architects and system designers. Readers can learn about system architecture patterns, scalability principles, and distributed computing concepts. With articles, case studies, and design principles, System Design Codex provides  guidance and expertise for designing robust and scalable software systems.

System Design Codex

Consistent hashing distributes keys uniformly across a cluster of nodes while minimizing key movement when nodes are added or removed. Keys and nodes are hashed onto a circular ring, with each key assigned to the first node encountered clockwise. Virtual nodes improve load balancing by mapping each physical node to multiple ring positions. The technique offers scalability, fault tolerance, and efficient load distribution, making it ideal for distributed databases like DynamoDB, caching systems like Memcached, and CDNs. Potential drawbacks include load imbalance without virtual nodes and dependency on hash function quality.

Consistent Hashing in a Nutshell