Scaling

Scaling is of two types:

• Vertical Scaling
• Horizontal Scaling

Vertical Scaling refers to scale-up, which means adding more power to your server (CPU, RAM, etc.).

Horizontal Scaling refers to scale-out, which allows you to scale by adding more servers to your pool of resources.

Vertical Scaling

• When traffic is low, it’s a great option
• Simplicity is its great advantage

Though vertical scaling has some hard limits

• It’s impossible to add unlimited CPU and memory to a single server
• Vertical scaling does not have failover and redundancy. If a server goes down, your product goes down with it completely.

Horizontal Scaling

It is more desirable for large-scale applications due to the limitation of vertical scaling.

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