state-server high memory usage

[endersonmaia]

🙂 Expected behavior

The memory consumption of the node should not increase over time indefinitely.

🫠 Actual behavior

A rollups-node running for some time will eventually be killed by OOM since the state-server is always consuming more memory and never releasing it.

🧪 Minimal test case

make docker-run
#on another terminal 
docker stats

Let it running for some time and take note of memory consumption always increasing.

You could shell into the node container and look for the cartesi-rollups-state-server process memory usage individually.

🌎 Environment

This was observed with 1.5.0, but can happen with previous versions also, since the state-server component isn't updated for some rollups-node releases back.

✔️ Possible solutions

Make state-server persist data to disk or release memory that is not needed anymore.