What is Memory Usage?
Memory Usage is the amount of RAM (Random Access Memory) your hosting provider has dedicated to your account. Every process performed by your website (e.g., storing data, loading files, etc.) uses a certain amount of RAM.
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More About Memory Usage
Memory Usage is an essential factor for server speed. For a website to run as fast and smoothly as possible, it needs sufficient RAM. Higher memory usage means a more significant portion of the available RAM is actively being used. By contrast, lower memory usage will generally correlate with a faster site speed.
Under a shared hosting plan, memory usage, among other resources, is shared between multiple accounts. With a dedicated (or VPS) option, RAM is not shared with others, often meaning more RAM is available for your site. If you are looking for a way to lower your memory usage, it is wise to consider a VPS or dedicated hosting plan.