Scaling Writes

- Scale writes in four tiers: vertical scaling with write-optimized databases, sharding to spread load, queues a...

30-second elevator pitch: "Write scaling is harder than read scaling because every write must persist to disk. I exhaust vertical scaling and database tuning first. Then I shard by partition key to spread load linearly. For bursty traffic I add queues and load shedding. For extreme volume I batch writes and use hierarchical aggregation. Each tier builds…