Data Lake for Enterprises

Eventual consistency

Eventual consistency is a consistency model used in distributed computing to achieve high availability that informally guarantees that if no new updates are made to a given data item, eventually all accesses to that item will return the last updated value.

- Wikipedia

In the previous section, you would have clearly got the notion behind the guarantees, namely consistency versus availability.

Its expected that data in a distributed system will become eventually consistent but always available. For a Data Lake, the availability guarantee is more important than consistency, but it purely depends on the use case. We cannot show/use bad data to the end user as this would have a huge impact on the company's brand. So, use cases ...