We look at Chapter 25 - Data Processing Pipelines and Chapter 26 - Data Integrity: What You Read Is What You Wrote.

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System prevalence

Prevayler Java implementation of system prevalence.

Types of failure that lead to data loss

Root cause

• user action
• operator error
• application bug
• infrastructure defect
• hardware fault
• site disaster

Scope

• wide
• narrow

Rate

• big bang
• slow and steady