The singleton pattern is a software design pattern that restricts the instantiation of a class to one single instance.
This is useful when exactly one object is needed to coordinate actions across the system.
What is the Consistent Hashing?
Consistent hashing is a special kind of hashing such that when a hash table is resized, only K/n keys need to be remapped on average, where K is the number of keys, and n is the number of slots.
In contrast, in most traditional hash tables, a change in the number of array slots causes nearly all keys to be remapped because the mapping between the keys and the slots is defined by a modular operation.
Let’s see how to make weighted random collection.
This is simple example of Spring-Boot-Redis.
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