Buffer

Limitation

Node.js Buffer objects hold raw bytes in memory. The runtime limits how much memory one allocation can request, so validate it before accepting an unbounded input size.

Real Use Case

When fetching large Redis objects, the Node.js client receives bytes from a network socket into a Buffer. Retrieving an object larger than the available memory can terminate the process.

Buffer.alloc - Limitations

When working with NodeJS buffer allocation - there's a constant buffers.constants.MAX_LENGTH which tells you, in bytes, what is the maximum alloc you can have.