Concept 2 min
State Management / Checkpointing
It’s what makes long tasks robust instead of fragile.
In one sentence
Save the work state at defined points so long-running tasks survive failures and restarts. With this, the Ralph Loop can withstand a crash without losing what it has already done.
Before
Long-running task in progress
What it does
State saved at defined points
After
A failure costs one segment, not everything
Example
The batch of 400 letters broke on number 287. Because progress was saved every ten, the restart began at 280.
Without a checkpoint, 287 letters would have been generated—and paid for—twice.
In practice
- Save at defined points, not at every step, because too much checkpointing costs more than the failure.
- The state has to be readable: if you don’t understand the file, you can’t resume manually.
- Test resumption on purpose by killing the process halfway through.
How to make it tangible
Save points defined in the flow, writing state to disk or a database.
Connects with
Translated from Portuguese with AI assistance.