Docker Compose Tip #35: Using tmpfs for ephemeral storage
Speed up I/O operations and enhance security by using tmpfs for temporary data. RAM-based storage that vanishes on restart! What is tmpfs? Tmpfs is a temporary filesystem that resides in memory: ⚡ Ultra-fast (RAM speed) 🔒 Secure (data doesn’t persist) 🧹 Self-cleaning (cleared on restart) Basic tmpfs usage Simple tmpfs mount: services: app: image: myapp tmpfs: - /tmp - /app/cache - /var/run With size limits: services: app: image: myapp tmpfs: - /tmp:size=100M - /app/cache:size=500M - /var/run:size=10M Advanced tmpfs options Fine-tuned configuration: ...