Bits of .NET

A container runs fine at first… then slowly degrades. No spikes. No crashes. Just silent slowness.

Root cause

• Layered filesystem (OverlayFS) grows

• Log files inside containers never rotate

• Memory fragmentation inside long-lived containers

Golden rule
Containers are not VMs. They are disposable.

Fix

• Never log to disk inside containers

• Use external logging drivers

• Restart containers periodically (even healthy ones)

logging:
  driver: "json-file"
  options:
    max-size: "10m"
    max-file: "3"