npx wrangler kv bulk put ./kv-seeds.json --namespace-id 2f1b3c4d5e6f7a8b9c0d1e2f3a4b5c6d
Upload many KV pairs from a JSON file
Reads a JSON array like [{"key":"a","value":"1"},{"key":"b","value":"2"}] and writes every pair in one command, far faster than looping key put calls. Each entry can add expiration_ttl or expiration for per-key lifetimes. Handy for seeding data or migrating stores.
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