What is Workers KV Instant?

Many applications need to look up small pieces of stored information, such as user settings, quickly. A key-value database is a way of storing data in which each record is found using a unique key, much like looking up a word in a dictionary. Workers KV is Cloudflare's key-value storage service for storing and retrieving data globally. Workers KV Instant is a mode of it that keeps the same programming interface but runs on Quicksilver, a key-value store Cloudflare developed internally, and Cloudflare says changes take effect without waiting for a cache time limit to expire. Cloudflare describes it as designed for feature flags, routing rules and application settings, and announced it as a private beta on 1 October 2026.

Written from primary sources and reference pages, and checked against them by an independent AI fact-checker. Drafted with AI assistance.