Etcd | martinuke0's Blog

Diagram of a Raft cluster with one leader, two followers, and lease timing arrows.

Architecting Fault-Tolerant State Machines with etcd's Raft: Lease Semantics and Split-Brain Recovery

A practitioner’s deep dive into how etcd’s Raft implementation prevents split-brain through leader leases, quorum checks, and recovery protocols — with patterns for building fault-tolerant state machines on top.

A stylized cluster of three nodes with one leader highlighted, representing etcd's Raft consensus.

Inside etcd's Raft Implementation: Lease-Based Leader Election and Read Consistency

How etcd uses Raft with lease-based leader election, read-index protocol, and a backend MVCC store to deliver strict consistency for Kubernetes and other control planes.

Distributed counter synchronization diagram

Implementing Linearizable Counters with etcd's Transaction API

How to design and ship linearizable counters on etcd using the Transaction API, ModRevision guards, and watch-based retry loops.