1. Layerfile Reference

CHECKPOINT (name) or CHECKPOINT disabled

The CHECKPOINT instruction allows you to control exactly when webapp.io will take snapshots of the pipeline.

On future runs, if no files or instructions have changed since the snapshot was taken, the runner will restore the snapshot instead of repeating work.

CHECKPOINT is not usually required, it’s advised not to use it unless you are using the API or there is measurable performance benefit to doing so.


  • Use CHECKPOINT disabled to disable checkpointing from that point onwards
  • Use CHECKPOINT deploy to create a checkpoint named “deploy”, which can be triggered as a lambda from our api
  • Use CHECKPOINT to expliticly take a checkpoint at a specific point (which happens automatically by default), or re-enable checkpointing after CHECKPOINT disabled

See the tuning performance documentation for more details.