Cached Playback lets you see changes made to animation immediately, rather than needing to create a Playblast.
Previously, whenever you modified a scene, Maya needed to update and redraw. To see what you had changed, you needed to create a Playblast. Depending on the size of the scene and changes made, making updates to scenes was time-consuming. Now, you can build a cache of your scene so that Maya only recomputes the part of the animation that was changed, rather than updating the whole scene for the entire time range.
Cached Playback appears in Maya as blue and pink stripes, known as the Cached Playback Status lines that run along the Time Slider.
Animation and Dynamics are cached separately in the scene: the blue cached Playback status line shows the progress of animation caching, while the pink status line represents the caching of dynamics nodes.
To activate or disable caching for your scene
Whenever you edit a scene that has been cached, the modified area in the Time Slider turns gray to show the segment of the animation that is out of date before becoming blue again to indicate that the values have been updated. This is called Cache Invalidation See Cached Playback status line states for more about this process.
However, if playback with caching is faster, Playblast performance also benefits from this improvement.
While Cached Playback works for most animation in Maya, a few areas remain unsupported, such as non-linear animation like Trax and XGen.
When Cached Playback encounters errors sending data to the cache, the status line and the Cached Playback icon turns yellow to indicate that Caching is disabled and it is in Safe Mode. See Safe Mode in the Cached Playback status line states topic for more about what you can do to fix the situation.