Visit Cambridge’s Lamplighter Brewing Co. in the evening or on a weekend and lines out the door are a regular occurrence.

It’s been a good problem for Cayla Marvil and AC Jones, who founded the brewery just over a year ago in an airy space whose whitewashed walls wouldn’t look out of place on a postcard of Santorini.

“We’ve been super flattered by the reception so far,’’ says Marvil. “But we feel so bad when people are waiting in line.’’