Read Replica / Read-Your-Writes Consistency

Kind: tension

Record: tension:read-replica-read-your-writes-consistency

Canonical: Schema

"read-replica" (performance-core layer) is traded against "Read-Your-Writes Consistency" (performance-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Read-Your-Writes Consistency" and choosing an explicit operating point.

Listed in Tensions, after CDN / Edge Caching / Cache Invalidation and before Queuing Theory / Model Assumptions.

In tension with

• Read Replica
• Read-Your-Writes Consistency

Mechanism

• irreducible-tradeoff

Linked from

• Scalability / Performance / Optimization
• Resolution mechanisms