Clustering & High Availability

We architect and operate clusters that survive hardware failure, datacenter outage, region loss, and human error. Galera multi-master, Patroni-managed Postgres, RAFT consensus systems, keepalived + HAProxy, etcd, ZooKeeper, Consul — evaluated, sized, and deployed against your actual workload, not a textbook reference.

Every cluster we deploy includes automated failover testing (we kill nodes monthly on staging and verify the cluster heals correctly), split-brain detection, network-partition handling, and a runbook the on-call engineer can execute at 3am without consulting Stack Overflow.

We handle the boring failure modes too — flapping replication links, certificate expiry, clock drift, leader-election storms, the kind of stuff that brings down "highly available" deployments because nobody tested them under real conditions.