Complete Guide to Vertical Scaling: Resolving System Scalability

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  • The vertical scaling method incorporates the addition of resources to a single node or server. 
  • This method is used to enhance the server’s computing power by adding more hardware.

Vertical scaling, or Scaling up, is used to address the scalability issues of Layer-1 blockchains. Scalability is one of the main issues in the blockchain trilemma, along with decentralization and security in L1 networks like Ethereum. Off-chain transaction execution with the help of outsourcing computational work to layer 2 results in low gas fees and near-instant transactions. Scaling up is a must because of the increased application usage and user requests, which may cause performance issues.

What is Scalability?

Scalability defines the capability of an application to bear enhanced load while maintaining the system’s performance and response with increased load. However, scalability allows systems to function effectively and efficiently with continuous growth in the number of users and data or server requests. It can be measured by the successful handling of several requests by an application.

If server requests  are simultaneously handled with no performance issue, then the system or network is said to be scalable. When this system fails to serve the number of requests simultaneously, it is assumed to have reached its scalability limit. For the continuous growth of businesses with low latency, scalable resources become necessary to reduce downtime. Additional resources like the CPU, hard disk, and other physical memory adjustments have to be added in order to enhance the system’s scalability.

What is Vertical Scaling?

The vertical scaling method determines additional resource incorporation into a system or application to meet the requirements. Unlike horizontal scaling, scaling up means adding more computing power to the existing machines. Just suppose, if a server needs more processing power, a vertical scaling method could upgrade the CPUs. Users can also enhance network speed, memory, and storage with the help of this process.

This scaling solution provides the ability to enhance the limits or capacity of existing hardware or software. Meanwhile, it’s important to know that a user can only increase the capacity up to a certain limit of their server. By vertical scaling, users can increase the potential of a single machine while allowing data to reside on a single node or server. Further this scaling distributes the load through CPU and RAM for current machines to enhance the performance with low latency and downtime.

Benefits of Vertical Scaling

  • Cost-efficient

Updating a pre-existing server makes the system cost-effective. Furthermore, new backups are added to virtualizing software to make vertical scalability more convenient. Maintenance costs are reduced or sometimes remain the same.

  • Less Communication Complexity

Single nodes handling all the layers of your services make the system fast, meanwhile, it doesn’t have to synchronize and communicate with other systems to process. This makes the system fast and responsive.

  • Less complicated

Maintenance becomes cheaper by scaling up while making it less complex with the management of the number of nodes.

  • Less Software Changes

The working of software over a server doesn’t need to be changed with vertical scaling implementation.


Vertical scaling provides high performance along with high-quality service. Adding more resources to the existing server makes the system more convenient, efficient, cost-effective, and faster. Servers become more powerful via scaling up, which increases their capability to handle heavier workloads. Institutions must look out for both horizontal and vertical scaling as per their need to harness the benefits and take advantage of both worlds.

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