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What Is Horizontal and Vertical Scaling?

There are two common ways you can scale managed WordPress hosting: horizontally and vertically. Horizontal scaling refers to adding addition web nodes to your server layout whereas vertical scaling is simply increasing the size of the existing machine(s) you have set up. They accomplish different goals and are appropriate in different situations.


Horizontal Scaling For WordPress


Horizontal scaling typically coincides with a High Availability configuration. Having a load balanced synchronized group of servers gives you added reliability and fault tolerance through active file replication between multiple web nodes. In the event the primary server were to fail, you have an elevated backup server ready to jump in and field your traffic. This also provides you immunity to any downtime caused by a hardware failure, network outage or update that would require a server restart.


Vertical Scaling For WordPress


Vertical scaling involves adding more compute power (CPU & memory) onto your preexisting server, offering you more performant hardware and resources to handle a larger volume of requests per second. A typical scenario more appropriate for vertical scaling is when you have a growing WooCommerce site that begins to experience issues under load. If performance is your bottleneck or you find yourself reaching critical CPU thresholds, then vertical scaling is the more suitable choice.

Note: If traffic uncertainty is your primary target you’re looking for reassurance in, we generally recommend upgrading to a larger-sized single server, which will give you greater computing power for supporting higher volumes of requests under less complexity than HA.


What Does Pagely Offer?


Both solutions are available with Pagely operating exclusively on dedicated AWS EC2 instances. Additionally, we offer completely dedicated RDS options for added scaling potential on the backend.

Whether you’re looking for added peace of mind or exuberant horsepower for supporting your Enterprise WordPress hosting needs, we have the architecture to support your most crucial, sophisticated needs.

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