> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fastcat.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Plans, Usage & Add-ons

> How visits, bandwidth, and storage are measured, what happens at the limit, and how to add capacity.

Your plan sets four things: monthly **visits**, **storage**, **bandwidth**, and **PHP workers**. Current usage for each is on your site's **Stats** and **Overview** tabs.

## How we measure

<CardGroup cols={3}>
  <Card title="Visits" icon="users">
    Counted at our edge from real requests to your site. No tracking cookie, no JavaScript on your pages.
  </Card>

  <Card title="Bandwidth" icon="arrow-down-up">
    Traffic served from your site during the current billing period.
  </Card>

  <Card title="Storage" icon="hard-drive">
    Your WordPress files and your database together, against one shared quota.
  </Card>
</CardGroup>

Visits and bandwidth reset at the start of each monthly period. Storage is a standing limit, not a monthly one.

## What happens at the limit

<AccordionGroup>
  <Accordion title="Visits— 80% and 100%">
    We email you as a heads-up. Nothing changes for your visitors; your site serves normally.
  </Accordion>

  <Accordion title="Visits— 200%">
    At double your plan's allowance we stop serving the site until you upgrade or the period resets. You'll have had two emails before this point, so it should never arrive as a surprise.
  </Accordion>

  <Accordion title="Bandwidth— 80%">
    Heads-up email. No effect on your site.
  </Accordion>

  <Accordion title="Bandwidth— 100%">
    Your site is rate-limited rather than switched off: it stays reachable but serves more slowly until you add bandwidth or the period resets.
  </Accordion>

  <Accordion title="Storage— 100%">
    Existing files stay exactly where they are, but new writes are refused— which usually shows up as uploads failing or WordPress complaining it can't write. Delete data or add storage to clear it.
  </Accordion>
</AccordionGroup>

<Tip>
  Consistently near a limit? Upgrading a plan is usually cheaper than adding to it, and gets you more of everything at once.
</Tip>

## Add capacity

The **Add-ons** tab does two things.

<Steps>
  <Step title="Upgrade your plan">
    Move up a tier and every limit rises together. Upgrades are handled through the billing panel and prorated against your current term.
  </Step>

  <Step title="Or top up one resource">
    Add storage or bandwidth on their own when only one limit is pinching.
  </Step>
</Steps>

Add-ons are **targets, not additions**. Picking the 50 GB storage add-on means your site's total storage becomes 50 GB— it isn't added on top of your plan's 10 GB. That's why only one add-on of each kind can be active at a time; to change the amount, step the existing add-on up or down instead of buying a second one.

<Note>
  After a plan upgrade, an add-on can become redundant— your new plan's base already meets or beats the target you're paying for. The panel flags it with an amber banner so you can cancel it in the billing panel.
</Note>

## Reading the Stats tab

| Card        | What it tells you                                         |
| ----------- | --------------------------------------------------------- |
| CPU         | Current CPU use against your plan's allocation            |
| Memory      | Current memory use against your plan's allocation         |
| Storage     | Files plus database, against your effective storage limit |
| Network     | Lifetime traffic in and out of your containers            |
| Site health | Whether your containers are running and responding        |

Short spikes in CPU and memory are normal— a plugin update, a cron run, a crawler. Sustained saturation is the signal to size up.

<Card title="Fair Use Policy" icon="server" href="/company/fair-use-policy">
  What "reasonable use" means across FastCat shared services.
</Card>