Building a web service without a traditional database is now feasible due to advances in storage technology and the introduction of the Raft Consensus algorithm. By leveraging fast, robust disk storage, and cheap RAM, data can be kept entirely in-memory, reducing complexity and improving performance. The architecture involves periodic snapshots and transaction logs to ensure data recovery. For high availability, Raft is used to replicate the service across multiple machines, enabling seamless failover and rolling updates. The example of Screenshotbot shows how this architecture can streamline development and improve robustness.
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