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Review the definitions for terms used across Cloudflare’s KV documentation.

cacheTtlCacheTtl is a parameter that defines the length of time in seconds that a KV result is cached in the global network location it is accessed from.
KVWorkers KV is Cloudflare’s key-value data storage.
KV namespaceA KV namespace is a key-value database replicated to Cloudflare’s global network. A KV namespace must require a binding and an id.
metadataA metadata is a serializable value you append to each KV entry.