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Lessons (5)

• Extending Kubernetes: CRDs, Operators and Admission

  … db-0 A CRD alone only stores data . Something must act on it. Good CRD practice: - Define a …

• Collaborative Document Editing & Real-Time Sync

  … OT vs CRDT OT (Operational Transformation) CRDT (Yjs / Automerge / Fugue) --- --- --- Needs a central order? Yes, a per-doc …

• Time, Consistency and Distributed Transactions

  Reason about clocks, ordering, split brain, locks, CRDTs and transactions without promising impossible global certainty. The problem in …

• RBAC and Cluster Security

  … Whole cluster Same, plus cluster-wide resources (nodes, CRDs) RoleBinding One namespace Grants a Role or ClusterRole to …

• Internals, Upgrades, Resilience and Interview Questions

  … What is an Operator? A CRD plus a controller that automates the lifecycle of an application using a …