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47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
---
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title: partialCached
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linktitle: partialCached
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description: Allows for caching of partials that do not need to be re-rendered on every invocation.
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godocref:
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date: 2017-02-01
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publishdate: 2017-02-01
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lastmod: 2017-02-01
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categories: [functions]
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menu:
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docs:
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parent: "functions"
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keywords: [performance]
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signature: ["partialCached LAYOUT INPUT [VARIANT...]"]
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workson: []
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hugoversion:
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relatedfuncs: []
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deprecated: false
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aliases: []
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---
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The `partialCached` template function can offer significant performance gains for complex templates that don't need to be re-rendered on every invocation.
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**Note:** Each Site (or language) has its own `partialCached` cache, so each site will execute a partial once.
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Here is the simplest usage:
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```
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{{ partialCached "footer.html" . }}
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```
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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:
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{{< code file="partial-cached-example.html" >}}
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{{ partialCached "footer.html" . .Section }}
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{{< /code >}}
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If you need to pass additional parameters to create unique variants, you can pass as many variant parameters as you need:
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```
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{{ partialCached "footer.html" . .Params.country .Params.province }}
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```
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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.
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> See also the [The Full Partial Series Part 1: Caching!](https://regisphilibert.com/blog/2019/12/hugo-partial-series-part-1-caching-with-partialcached/)
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