Knowledge trunk
Storage and data
Persistence, transactions, versions, indexes, logs, and the rules governing what readers and writers observe.
updated 2026-08-25
Storage systems turn mutable intent into durable state while many readers and writers disagree about timing.
Begin with Transactions, then use MVCC to see one important way databases preserve useful read semantics without forcing every reader through the same lock.
This trunk naturally connects to replication and consistency, idempotency, and measurement.
Local nodes