ACID vs. BASE

ACID

• Strong consistency

• Isolation

• Focus on ôcommitö

• Nested transactions

• Availability?

• Conservative (pessimistic)

• Difficult evolution(e.g. schema)

BASE

• Weak consistency

  • stale data OK

• Availability first

• Best effort

• Approximate answers OK

• Aggressive (optimistic)

• Simpler!

• Faster

• Easier evolution

But I think itÆs a spectrum

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