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# The future of `nx-remotecache-*`
Nrwl Nx just introduced us to **Powerpack**. It's the clear successor of the remote cache setup and officially supports custom caching solutions. This will mark the end of the `nx-remotecache-*` packages as custom caching solutions based on the filesystem won't work anymore starting with Nx 21.
Powerpack fills exactly the void that `nx-remotecache-custom` filled. Therefore I'm happy to give this topic back to the creators behind Nx. Thanks for the great ride – we reached over 114,000 weekly downloads on npm as I'm writing this 🥳
Feel free to read the [Introduction to Powerpack](https://nx.dev/blog/evolving-nx#introducing-nx-powerpack) by Jeff yourself. If you have any further questions checkout the pinned GitHub [issue](https://github.com/NiklasPor/nx-remotecache-custom/issues/48).
Cheers, Niklas 👋
## nx-remotecache-custom
`nx-remotecache-custom` is a simple package which includes a helper function to create custom nx remote cache implementations. You'll only need to add functions for:
1. storing a file / buffer
2. retrieving a file / buffer
3. checking if a file / buffer exists
and `createCustomRunner()` is taking care of everything else. Not convinced yet? The package will also:
- Print beautiful & colored nx-style messages to the console 💅🎆
- Allow you to execute asynchronous code in the setup phase of your runner 🤖
- Handle all thrown errors ➡ No broken builds to offline remote caches 🚀
- Automagically zip all the cached files ➡ Minimal storage & traffic consumption 📦
- Provide a small defined and documented API 📚
## Compatability
| Nx | Remote Cache |
| ----------------- | ---------------- |
| `>= 21` | `Deprecated` |
| `>= 20.0.0 < 21` | `>= 20.0.0` |
| `>= 19.0.0 < 20` | `>= 19.0.0 < 20` |
| `>= 18.0.0 < 19` | `>= 18.0.0 < 19` |
| `>= 17.0.0 < 18` | `>= 17.0.0 < 18` |
| `>= 16.9.0 < 17` | `>= 5.0.0 < 17` |
| `< 16.9.0` | `< 5.0.0` |
### Usage
```sh
npm i nx-remotecache-custom
```
```ts
// define custom parameters for your nx.json here
interface MyRunnerOptions {
remoteUrl: string;
}
export default createCustomRunner(async (options) => {
// initialize environment variables from dotfile
initEnv(options);
// initialize the connection to your remote storage here
const myStorage = new MyStorage(options.remoteUrl);
return {
// name is used for logging purposes
name: "My Storage",
// fileExists checks whether a file exists on your remote storage
fileExists: (filename) => myStorage.exists(filename),
// retrieveFile downloads a file from your remote storage
retrieveFile: (filename) => myStorage.download(filename),
// storeFile uploads a file from a buffer to your remote storage
storeFile: (filename, buffer) => myStorage.upload(filename, buffer),
};
});
```
```json
{
"name": "nx-remotecache-mystorage",
"main": "index.js"
}
```
After this your package is already ready for usage. Publish it to npm (or an internal registry) and consume it in your client library. Install it and adjust your `nx.json` to use the newly created runner:
```json
"tasksRunnerOptions": {
"default": {
"runner": "nx-remotecache-mystorage",
"options": {
"remoteUrl": "http://127.0.0.1:1337",
"cacheableOperations": ["build", "test", "lint", "e2e"]
}
}
}
```
> For a more in-depth code example you can take a look at the implementation of [nx-remotecache-azure](https://github.com/NiklasPor/nx-remotecache-azure) which uses this package to implement a nx cache on the Azure Blob Storage.
### Advanced Configuration
| Option | Environment Variable / .env | Description |
| ------------ | --------------------------- | ----------------------------------------------------------------------------------------------------- |
| `name` | `NXCACHE_NAME` | Set to provide task runner name for logging. Overrides name provided in implementation. |
| `verbose` | | Set to receive full stack traces whenever errors occur. Best used for debugging. **Default:** `false` |
| `silent` | | Set to mute success and info logs. **Default:** `false` |
| `read` | `NXCACHE_READ` | Set to enable / disable reading from the remote cache. **Default:** `true` |
| `write` | `NXCACHE_WRITE` | Set to enable / disable writing to the remote cache. **Default:** `true` |
| `dotenv` | | Set to `false` to disable reading `.env` into `process.env`. **Default:** `true` |
| `dotenvPath` | | Set to read `.env` files from a different folder. |
```json
"tasksRunnerOptions": {
"default": {
"options": {
"name": "My Storage",
"verbose": true,
"silent": true
}
}
}
```
### All Custom Runners
| Runner | Storage |
| -------------------------------------------------------------------------------------------- | ------------------- |
| [nx-remotecache-azure](https://www.npmjs.com/package/nx-remotecache-azure) | Azure Blob Storage |
| [@pellegrims/nx-remotecache-s3](https://www.npmjs.com/package/@pellegrims/nx-remotecache-s3) | S3 Storage |
| [nx-remotecache-minio](https://www.npmjs.com/package/nx-remotecache-minio) | MinIO Storage |
| [@vercel/remote-nx](https://www.npmjs.com/package/@vercel/remote-nx) | Vercel Cache |
| [nx-remotecache-redis](https://www.npmjs.com/package/nx-remotecache-redis) | Redis Cache |
... and [many more!](https://www.npmjs.com/browse/depended/nx-remotecache-custom)