> For the complete documentation index, see [llms.txt](https://documentation.alluxio.io/ee-ai-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.alluxio.io/ee-ai-en/ai-3.3/feature/cache-free.md).

# Cache Free

## Cache Free Overview

The free operation provides options to force data eviction to manually manage cache space.

### Freeing Cache Space via Command Line

Usage: `bin/alluxio job free [flags]`

* Submit a free job:

```shell
$ {ALLUXIO_HOME}/bin/alluxio job free --path s3://bucket/path --submit
```

* View the progress a free job:

```shell
$ {ALLUXIO_HOME}/bin/alluxio job free --path s3://alluxio/path --progress
Progress for Free path file 's3://alluxio/path':
	Job Id: b21ce9fb-f332-4d39-8bb4-554f9a4fa601
	Job Submitted: Fri Feb 02 21:28:56 CST 2024
	Job path: s3://alluxio/path
	Job State: SUCCEEDED, finished at Fri Feb 02 21:29:01 CST 2024
	Free Info :	totalFile:4 totalByte:3072.00KB
	Free Files Failed: 0
	Free Bytes Failed: 0B
	Free Files Succeeded: 4
	Free Bytes Succeeded: 3072.00KB
```

* Stop and interrupt a running free job: Note this will leave some files remaining in the cache

```shell
$ {ALLUXIO_HOME}/bin/alluxio job free --path s3://alluxio/path --stop
```

```shell
Parameter Description：
--path [all] the ufs path
--batch-size [submit] The speed of free files per second per worker
--force [submit] Trigger free even if some workers are offline
--verbose [progress] Verbose output
--format string [progress] Format of output, either TEXT or JSON (default "TEXT")
```

### Freeing Cache Space via REST API

* Submit a free job:

```shell
curl -H "Content-Type: application/json" -v -X POST http://coordinator_host:19999/api/v1/master/submit_job/free -d '{
	"path": "s3://alluxio/path",
	"options": {
	"batchSize": "200"
	}
}'
```

* View the progress of a free job:

```shell
curl -H "Content-Type: application/json" -v -X GET http://coordinator_host:19999/api/v1/master/progress_job/free -d '{
	"path": "s3://alluxio/path",
	"format": "JSON",
	"verbose": "true"
}'
```

* Stop and interrupt a running free job: Note this will leave some files remaining in the cache

```shell
curl -H "Content-Type: application/json" -v -X POST http://coordinator_host:19999/api/v1/master/stop_job/free -d '{
	"path": "s3://alluxio/path"
}'
```

The free jobs can be list by sending a POST request.

```shell
curl http://ip:1999/api/v1/master/list_job?job-type=FREE[&job-state=[RUNNING|VERIFYING|STOPPED|SUCCEEDED|FAILED|ALL]]
```


---

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