Instacart, a prominent player in the on-demand grocery delivery market, relies heavily on Rollbar for continuous monitoring and error management to maintain its promise of one-hour deliveries, a critical component given the rapid scaling and complex logistics involved in servicing thousands of orders per minute. As a trailblazer in the online grocery sector, Instacart partners with major chains to offer users in-store prices with a simple delivery charge, while employing thousands of shoppers across the U.S. to fulfill these orders. The engineering team, which has grown significantly, integrates Rollbar into their continuous deployment cycle, allowing for swift detection and resolution of errors, ensuring that both their consumer and shopper apps remain reliable. Rollbar's detailed error forensics and proactive alerting are essential to Instacart's operations, enabling the engineering team to prioritize error resolution based on impact, thereby enhancing their ability to deliver smooth, error-free experiences to customers and shoppers alike.