Eventual Consistency is a compromise in distributed systems where data synchronization is relaxed but guaranteed to converge over time.
Key Characteristics:
- Not all nodes have the same data immediately after a write
- Nodes will eventually sync and reach the same state
- Provides better availability compared to strong consistency
- Trades immediate accuracy for system responsiveness
Technical Implementation:
- Uses background processes to reconcile data differences
- Typically employs techniques like:
- Read repair
- Anti-entropy processes
- Gossip protocols
When to Use:
High-traffic systems requiring continuous availability Where slight data staleness is acceptable Scenarios with frequent reads/writes