Cluster

Consistent Hashing is a cornerstone technology for distributed systems. Many of software developers don’t realize it, but Consistent Hashing is needed in many places: load balancers, caches, CDNs, id generators, databases, chats / social networks, and many other systems.

This topic consists of:

• Problem with rehashing and why we need hashing to be CONSISTENT
• Hash space and hash ring
• BASIC approach (introduced by Karger et al. at MIT)
• Advanced approach with VIRTUAL NODES

These items are disclosed in a very interesting Chapter 5 of the book:

Quite often the tooling is a forgotten area during the beginning of development. This chapter overlooks the tooling that can help build and maintain event-driven microservices. Useful checklist! This topic includes:

• Org rules
• Documentation, tagging
• Quotas
• Schema registry
• Offset management
• ACL
• State management and app reset
• Consumer offset lag monitoring
• Container Management Controls
• Cluster Creation and Management
• Dependency Tracking

All of these is disclosed in the Chapter 14 of the book: