Static Caching is a really awesome feature of Statamic - taking advantage of it can really help to speed up your site!
Although, because e-commerce sites are dynamic (for example: the cart is different per user) you'll want to ignore those bits so they don't get cached.
Thankfully, you can wrap that code in Statamic's nocache tag. For example: you might want to do something like this for a line items counter in your site header:
{{ nocache }} Cart ({{ sc:cart:count }} items){{ /nocache }}Also, you'll want to do it for any other parts of your site that show cart information (like the cart/checkout pages). Just wrap the info in the tag and the job's a good 'n.
{{ nocache }} {{ sc:cart }} <table> <thead> <tr> <th>Product</th> <th>Price</th> <th>Quantity</th> <th>Total</th> </tr> </thead> <tbody> {{ items }} <tr> <td> {{ product:title }} </td> <td> {{ product:price }} </td> <td> {{ sc:cart:updateItem :item="id" }} <select name="quantity" onchange="this.parentElement.submit()" > {{ loop from="1" to="5" }} <option value="{{ value }}" {{ if quantity == value }} selected {{ /if }} > {{ value }} </option> {{ /loop }} </select> {{ /sc:cart:updateItem }} </td> <td>{{ total }}</td> </tr> {{ /items }} <tr> <td></td> <td></td> <td>Subtotal</td> <td>{{ items_total }}</td> </tr> </tbody> </table> {{ /sc:cart }}{{ /nocache }}