Is Your 'Scalable' Backend a Ticking Time Bomb?

Short summary

Many 'scalable' backends fail because horizontal scaling alone doesn't prevent correlated failures or data inconsistency. This tutorial covers fault isolation strategies (multi-region deployment, quorum consensus, fencing) and strong consistency patterns like the Transactional Outbox for critical operations. True scalability requires deliberate architectural design focused on resilience, not just adding more instances.

• •Horizontal scaling without fault isolation creates expanded failure domains, not resilience
• •Use quorum-based consensus (Raft/Paxos) and fencing mechanisms to prevent split-brain scenarios
• •Apply strong consistency to critical operations via the Transactional Outbox pattern

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