A decentralized perpetuals exchange encountered an unexpected rollback after database maintenance went sideways. The team had to reverse blockchain transactions to address the centralized database hiccup. It's one of those moments that highlights the tension between decentralized frontends and centralized backend infrastructure—when maintenance on the database side causes chain-level consequences, you're left with tough choices. The platform eventually stabilized, but it raises questions about infrastructure redundancy and failover mechanisms in perpetual trading systems.