Below lines are repeated 8 times on single page key value store.
"
For example, let’s consider that we have four nodes, and we want 25% of the requests to go to each node to balance the load equally. The traditional way to solve this is through the modulus operator. When a request comes in, we assign a request ID, calculate its hash, and find the remainder by taking the modulus with the number of nodes available. The remainder value is the node number, and we send the request to that node to process it"
Poor quality of material
Course: Grokking Modern System Design Interview for Engineers & Managers - Learn Interactively
Lesson: Ensure Scalability and Replication - Grokking Modern System Design Interview for Engineers & Managers