Andrés
@andalm
Let the technical be tangible, free of any mystical aura ✨
Andrés
github.com
Replication lag occurs when there is a delay between a write operation being executed on the primary (leader) node and the same operation being replicated to the secondary (follower) nodes.
Replication lag is a basic issue in leader-based replication systems that are made for better availability, scalability, and faster response times by spreading out read operations across replicas in different locations.
The Lean Mindset: Ask the Right Questions (Addison Wesley Signature Series)
Mary Poppendieck / Tom Poppendieck Poppendieck / Poppendieck
amazon.com
The "Painless" data migration
- Another challenge was to incorporate the above changes for the existing data i.e. increasing the number of shards and defining a custom routing key for each of the document. The existing index had close to 33 MN documents at the time of the change
- Given that the routing key and the number of shards needed to changes, a