In simple words, a subnet is a section of a network that has been divided into smaller manageable units. When there is an extensive network, subnets are used to divide it to provide several segments that are manageable. Furthermore, subnets allow specific routing in the network, which improves communication. In the blockchain, subnets work together to reach an agreement in the network. Therefore, each block in the chain must be validated by every subnet. That means all subnets must have the same properties to reach a consensus. Here is a short breakdown of subnets and how they work in blockchain.
You need to know that subnets are different from blockchains. Subnets can have independent nodes to track and validate on behalf of blockchains. If subnets are missing, it means validation will not happen. In that case, the data stored cannot function properly, or in a worst-case scenario, you may lose it. Therefore, according to the avalanche validator, there must be at least five validators. The subnet may shut down if a single validator is not working. That means a subnet requires as many validators as possible.
Subnets allow you to create your blockchain networks if you are in the avalanche network. You can customize the networks starting with the transaction volume to KYC standards. Subnets communicate together and allow computers on the same network to communicate.
Reasons for Setting up Subnets
There are various reasons why deploying subnets is crucial. Here are several reasons.
It is possible to customize the blockchain with subnets. However, how you customize depends on the relations between the applications and requirements in virtual machines.
- Isolate Performance
The work of avalanche is to separate your network from traffic to enhance its performance and strengthen the connection. Segregation makes it easy and ensures all applications perform well without congestion.
A blockchain may have an application–specific need to operate well. For example, the app may require specific CPU power and RAM. These requirements must be met for the blockchain to operate. Subnets enable us to meet these requirements and provide more to ensure there is no limitation to the user.
If blockchains cannot provide proper validation because other users lack interest, they can still work if they have subnets. Subnets separate the blocks and allow each interested team to operate efficiently and independently. Therefore, the blocks don’t operate in a chain, reducing the validators’ general load.
- Support Private Blockchains
Every business has confidential information that must not reach the public. In that case, investing in private blockchains can be a good idea. This requires creating private subnets that allow specific validators into your network for privacy.
As blockchains struggle to attain scalability, there is the hope of achieving this goal. Luckily, due to the flexibility of subnets, it has become possible to create compliance standards without compromising integrity.
Subnets are the dynamics of avalanche validators that reach an agreement in a blockchain network. They are more of Blockchain-as-a- Service that runs a single blockchain. They play an integral role in blockchain based on their independence.