CAP Theorem

• CAP Theorem
• Consistency: Every read from the database gets the latest (and correct) piece of data or an error
• Availability: Every request is received and a response is given -- without a guarantee that the data is the latest update
• Partition Tolerance: The system continues to work regardless of losing network connectivity between nodes You can only have Consistency and Partition Tolerance (CP) or Availability and Partition Tolerance (AP).

Sources

• Disambiguating ACID and CAP - VoltDB