The `partialCached` template function can offer significant performance gains for complex templates that don't need to be re-rendered on every invocation.
**Note:** Each Site (or language) has its own `partialCached` cache, so each site will execute a partial once.
**Note**: Hugo renders pages in parallel, and will render the partial more than once with concurrent calls to the `partialCached` function. After Hugo caches the rendered partial, new pages entering the build pipeline will use the cached result.
You can also pass additional parameters to `partialCached` to create *variants* of the cached partial. For example, if you have a complex partial that should be identical when rendered for pages within the same section, you could use a variant based upon section so that the partial is only rendered once per section:
{{<codefile="partial-cached-example.html">}}
{{ partialCached "footer.html" . .Section }}
{{</code>}}
If you need to pass additional parameters to create unique variants, you can pass as many variant parameters as you need:
Note that the variant parameters are not made available to the underlying partial template. They are only use to create a unique cache key. Since Hugo `0.61.0` you can use any object as cache key(s), not just strings.
