This content can be reused
``` And include it in another file: ```html index.html theme={null}This content is unique to this page.
{/* #include virtual="includes/example.html" */} ``` And your final rendered page includes the other file: ```html index.html theme={null}This content is unique to this page.
This content can be reused
``` ## Caching and dynamic content You can use SSI to have [caching](/docs/routes/cache) and dynamic content in one. So one file is cached, while another updates dynamically. For example, you can activate SSI on one route with cache disabled and enable cache on another route: ```yaml .upsun/config.yaml theme={null} routes: "https://{default}/": type: upstream upstream: "myapp:http" ssi: enabled: true cache: enabled: false "https://{default}/cache": type: upstream upstream: "myapp:http" cache: enabled: true ``` Then create a page that displays the current date and time and is cached for 60 seconds (the example uses PHP, but any server-side language would work): ```php cache/example.php theme={null} {/* #include virtual="cache/example.php" */} ``` Then you can visit `index.php` and refresh the page a few times. You see the first number updating to the current time, while the second (included) one only changes every 60 seconds. For more on SSI, see the [nginx documentation](https://nginx.org/en/docs/http/ngx_http_ssi_module.html).