TLDR Tech / Data
Zero-Downtime Cassandra Migration Between EKS Clusters
Monday.com executed a zero-downtime, zero-data-loss migration of production K8ssandra clusters from legacy EKS to modern clusters, leveraging Cassandra's native multi-data-center support. Its team spun up new DCs in the target clusters, linked them via gossip and shared config, streamed and repaired data with automated Temporal workflows, gradually rerouted traffic, adjusted replication factors, and then decommissioned the old nodes.
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