Technology & Computing
Consistent Hashing Ring Virtual Node Calculator
Estimate key distribution variance across shards on a consistent hashing ring based on virtual nodes per shard.
Your inputs
Change any value to update the result instantly.
Estimated distribution variance (CV)
8.165%
Total virtual nodes on ring
1,500
Avg keys per shard
1,00,000
Est. std deviation in keys/shard
8,164.9658
Physical shards
10
Roughly 150–200 virtual nodes per shard is a common choice balancing evenness and ring metadata size.
Formula and working
Coefficient of variation ≈ 1 ÷ √(virtual nodes per shard); more vnodes → more even distribution
- 1
Collect the inputs
Number of physical shards/nodes = 10; Virtual nodes per shard = 150; Total keys to distribute = 1,000,000
- 2
Apply the formula
Coefficient of variation ≈ 1 ÷ √(virtual nodes per shard); more vnodes → more even distribution
- 3
Result
Estimated distribution variance (CV) = 8.165
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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