Fix Memory Issues

[asleepace]

General

This pull request fixes several memory issues which were causing bun run build to fail with an OOM error code 137.

• removed Rust ./backend/* directory
• removed several caches on the server
• updated documentation
• added swapfile

SwapFile

This was the final fix which seemed to fix the problem, for whatever reason the default swapfile on the server was disabled. I was able to delete it and create a new one with:

# Remove old swapfile
sudo swapoff /swapfile
sudo rm /swapfile

# Create new one with proper permissions
sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

# Verify it's working
free -h

Clear Caches

I also installed the Linux program ncdu which help track down several issues with old logs and caches which were taking up a lot of space.

# show log disk usage
journalctl --disk-usage

# Clear journal entries older than 7 days
sudo journalctl --vacuum-time=7d

# Or limit the size to 500M
sudo journalctl --vacuum-size=500M

# Edit config file to set limits
sudo nano /etc/systemd/journald.conf

# Set these:
# SystemMaxUse=500M
# SystemMaxFileSize=50M