Deno KV Has a Free API: Built-In Key-Value Database with Zero Configuration

What is Deno KV? Deno KV is a built-in key-value database that ships with the Deno runtime. No installation, no configuration, no connection strings. Just Deno.openKv() and you have a globally distributed database. Free on Deno Deploy: unlimited reads, 1 GB storage. Quick Start const kv = await Deno.openKv(); // Set await kv.set(["users", "user_123"], { name: "Alice", email: "[email protected]", plan: "pro", }); // Get const user = await kv.get(["users", "user_123"]); console.log(user.value); // {name: "Alice", ...} // Delete await kv.delete(["users", "user_123"]); That's it. No npm install, no database setup. Hierarchical Keys // Keys are arrays — naturally hierarchical await kv.set(["posts", "2026", "03", "my-post"], { title: "Hello", body: "..." }); await kv.set(["posts", "2026", "03", "another"], { title: "World", body: "..." }); // List all March 2026 posts const posts = kv.list({ prefix: ["posts", "2026", "03"] }); for await (const entry of posts) { console.log(entry.key, entry.v