Workers KV Read Latency Under High Concurrency

Goal

Identify the concurrency level at which Cloudflare Workers KV read operations exhibit significant latency spikes, and understand whether an implicit threshold or throttling mechanism exists.

Constraints

• Requests target the same KV key from multiple Workers instances within a single region.
• Latency is measured relative to the typical <30 ms baseline for single‑request reads.
• Observations are limited to the documented Workers KV read API; no custom caching or batching is employed.

Unresolved Questions

1. What is the maximum number of concurrent KV read requests that can be issued to a single key before latency begins to exceed the <30 ms threshold?
2. Does Cloudflare apply a dynamic throttling or soft limit to KV read traffic under high concurrency, and if so, how is this threshold determined?
3. Are there documented best‑practice guidelines for mitigating latency spikes in high‑concurrency KV read scenarios?