feat: add upstash driver

.env.example

@@ -0,0 +1,2 @@
+VITE_UPSTASH_REDIS_REST_URL=
+VITE_UPSTASH_REDIS_REST_TOKEN=

.gitignore

@@ -11,3 +11,4 @@ __*
 .vercel
 .netlify
 test/fs-storage/**
+.env

docs/2.drivers/upstash.md

@@ -0,0 +1,49 @@
+---
+icon: simple-icons:upstash
+---
+
+# Upstash
+
+> Store data in an Upstash Redis database.
+
+## Usage
+
+::read-more{to="https://upstash.com/"}
+Learn more about Upstash.
+::
+
+::note
+Unstorage uses [`@upstash/redis`](https://github.com/upstash/upstash-redis) internally to connect to Upstash Redis.
+::
+
+To use it, you will need to install `@upstash/redis` in your project:
+
+:pm-install{name="@upstash/redis"}
+
+Usage with Upstash Redis:
+
+```js
+import { createStorage } from "unstorage";
+import upstashDriver from "unstorage/drivers/upstash";
+
+const storage = createStorage({
+  driver: upstashDriver({
+    base: "unstorage",
+    // url: "", // or set UPSTASH_REDIS_REST_URL env
+    // token: "", // or set UPSTASH_REDIS_REST_TOKEN env
+  }),
+});
+```
+
+**Options:**
+
+- `base`: Optional prefix to use for all keys. Can be used for namespacing.
+- `url`: The REST URL for your Upstash Redis database. Find it in [the Upstash Redis console](https://console.upstash.com/redis/). Driver uses `UPSTASH_REDIS_REST_URL` environment by default.
+- `token`: The REST token for authentication with your Upstash Redis database. Find it in [the Upstash Redis console](https://console.upstash.com/redis/). Driver uses `UPSTASH_REDIS_REST_TOKEN` environment by default.
+- `ttl`: Default TTL for all items in **seconds**.
+
+See [@upstash/redis documentation](https://upstash.com/docs/redis/sdks/ts/overview) for all available options.
+
+**Transaction options:**
+
+- `ttl`: Supported for `setItem(key, value, { ttl: number /* seconds */ })`

src/drivers/upstash.ts

@@ -0,0 +1,69 @@
+import { type RedisConfigNodejs, Redis } from "@upstash/redis";
+import { defineDriver, normalizeKey, joinKeys } from "./utils";
+
+export interface UpstashOptions extends Partial<RedisConfigNodejs> {
+  /**
+   * Optional prefix to use for all keys. Can be used for namespacing.
+   */
+  base?: string;
+
+  /**
+   * Default TTL for all items in seconds.
+   */
+  ttl?: number;
+}
+
+const DRIVER_NAME = "upstash";
+
+export default defineDriver<UpstashOptions, Redis>(
+  (options: UpstashOptions = {}) => {
+    const base = normalizeKey(options?.base);
+    const r = (...keys: string[]) => joinKeys(base, ...keys);
+
+    let redisClient: Redis;
+    const getClient = () => {
+      if (redisClient) {
+        return redisClient;
+      }
+      const url =
+        options.url || globalThis.process?.env?.UPSTASH_REDIS_REST_URL;
+      const token =
+        options.token || globalThis.process?.env?.UPSTASH_REDIS_REST_TOKEN;
+      redisClient = new Redis({ url, token, ...options });
+      return redisClient;
+    };
+    return {
+      name: DRIVER_NAME,
+      getInstance: getClient,
+      hasItem(key) {
+        return getClient().exists(r(key)).then(Boolean);
+      },
+      getItem(key) {
+        return getClient().get(r(key));
+      },
+      setItem(key, value, tOptions) {
+        const ttl = tOptions?.ttl || options.ttl;
+        return getClient()
+          .set(r(key), value, ttl ? { ex: ttl } : undefined)
+          .then(() => {});
+      },
+      removeItem(key) {
+        return getClient()
+          .del(r(key))
+          .then(() => {});
+      },
+      getKeys(base) {
+        return getClient().keys(r(base, "*"));
+      },
+      async clear(base) {
+        const keys = await getClient().keys(r(base, "*"));
+        if (keys.length === 0) {
+          return;
+        }
+        return getClient()
+          .del(...keys)
+          .then(() => {});
+      },
+    };
+  }
+);

src/index.ts

@@ -27,6 +27,7 @@ export const builtinDrivers = {
   planetscale: "unstorage/drivers/planetscale",
   redis: "unstorage/drivers/redis",
   sessionStorage: "unstorage/drivers/session-storage",
+  upstash: "unstorage/drivers/upstash",
   vercelKV: "unstorage/drivers/vercel-kv",
 
   /** @deprecated */

test/drivers/upstash.test.ts

@@ -0,0 +1,14 @@
+import { describe } from "vitest";
+import { testDriver } from "./utils";
+import driver from "../../src/drivers/upstash";
+
+const url = process.env.VITE_UPSTASH_REDIS_REST_URL;
+const token = process.env.VITE_UPSTASH_REDIS_REST_TOKEN;
+
+describe.skipIf(!url || !token)("drivers: upstash", async () => {
+  process.env.UPSTASH_REDIS_REST_URL = url;
+  process.env.UPSTASH_REDIS_REST_TOKEN = token;
+  testDriver({
+    driver: driver({}),
+  });
+});