Why isn't include_cached tag used in _layouts/single.html (and other layouts)?

[jlconlin]

I recently learned about the jekyll-include-cache gem, which provides the include_cached liquid tag. I would really like to speed up the building/serving of my site.

The single.html file accounts for the majority of time spent rending my site (followed closely by default.html and head.html). This makes sense because I have a few thousand posts that all use the single layout.

I looked at _layouts/single.html and saw that it did not use the include_cached tag, opting instead to use the standard include tag. Since this layout seems to be so important, why isn't include_cached used more liberally?

[iBug]

Because include_cached reuses previously rendered results based only on the {% include %} directive. All includes in single.html refers to the current page via either {{ page.* }} or {{ post.* }}. If include_cached is used, all posts would contain wrong information except the first post processed.

[jlconlin]

That makes sense. Thanks for the information