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Replication Latency refers to the time gap between when a particular piece of data is created or updated in a primary location (source) and when that data becomes available in a secondary location (destination). Data is typically replicated from one location to another for backup and disaster recovery purposes, for load balancing, and for enabling distributed access to data. Replication Latency is the delay that data experiences while moving from the source to the destination.
The process of data replication takes place in two steps - data capture and data propagation. Data is initially captured from the source location, and then it is propagated to the target location. The time between these two steps is known as Replication Latency. This time gap is due to several factors, such as network bandwidth, system performance, and the volume of data being replicated. The time required to complete the replication process depends on the latency of the network connection, the size of the data, the volume of the data, and several other factors.
Replication Latency is an important metric for businesses as it can have significant impacts on data processing and analytics. Timely access to accurate data is the foundation of any business intelligence or analytics initiative. A high Replication Latency can lead to data inconsistencies, increased complexity, and reduced reliability of the data, which can negatively affect decision-making.
Replication Latency is critical in various use cases, including:
Data lake: A data lake is a centralized repository that allows businesses to store all their structured and unstructured data at any scale. Data lakes can help to reduce Replication Latency by providing a unified view of data that can be accessed by all the users.
Replication Latency is a critical factor that can impact overall data processing time and reliability. Dremio users can benefit from understanding Replication Latency to ensure that their data is available when they need it and that their analysis is based on accurate, up-to-date data.