نسخ القراءة وتصميم يراعي التأخر (lag)

في هذا الدرس

use replicas without breaking correctness.

الموضوعات المخطط لها

• Replicas serve reads asynchronously; they lag behind the primary.
• Reads that must see just-written data (read-your-writes) go to the primary or use session stickiness or LSN checks.
• Monitor replica lag and fall back to the primary above a threshold.
• Replicas help read scaling and failover, not write scaling.