Database Sharding vs. Read Replicas: High-Throughput Scaling Bottlenecks
Identifying write amplification, connection pool exhaustion, and replication lag before they compromise mission-critical SLAs.
MA
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6 min read
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1,280 words
Horizontal database scaling is rarely as simple as spinning up additional read replicas. Replication lag introduces subtle consistency anomalies that break financial transactions. We evaluate hash-based sharding versus virtual vnode distribution.
MA
Staff Security Researcher and Cryptography Lead at Sentinel Security. Author of multiple zero-trust workload identity RFCs and Kubernetes security audits.
Contributing Author affiliated with Sentinel Security Systems