# `Nebulex.Caching`
[🔗](https://github.com/elixir-nebulex/nebulex/blob/v2.6.6/lib/nebulex/caching.ex#L2)

At its core, the abstraction applies caching to Elixir functions, reducing
thus the number of executions based on the information available in the
cache. That is, each time a targeted function is invoked, the abstraction
will apply a caching behavior checking whether the function has been already
executed and its result cached for the given arguments. If it has, then the
cached result is returned without having to execute the actual function;
if it has not, then function is executed, the result cached and returned
to the user so that, the next time the method is invoked, the cached result
is returned. This way, expensive functions (whether CPU or IO bound) can be
executed only once for a given set of parameters and the result reused
without having to actually execute the function again. The caching logic
is applied transparently without any interference to the invoker.

See **`Nebulex.Caching.Decorators`** for more information about
**"Declarative annotation-based caching"**.

# `keyref`
*macro* 

A wrapper macro for `Nebulex.Caching.Decorators.build_keyref/2`.

This macro is imported automatically with `use Nebulex.Caching`,
which means you don't need to do any additional `alias` or `import`.

See `cacheable/3` decorator for more information about its usage.

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*Consult [api-reference.md](api-reference.md) for complete listing*