Explain the principle of eventual consistency and its features.

Eventual consistency is a data consistency model in distributed systems, where all data updates eventually propagate to all replicas, and they all become consistent, but not necessarily immediately.

Features:

• No guarantee of instant consistency after a write.
• The system allows temporary discrepancies between data copies.
• Ensures high availability and scalability.
• Suitable for high-load and distributed architecture systems.

Example: In a distributed database, a write may initially update one node, and other nodes will receive the update with a delay. Eventually, after some time, all nodes will have the same data.