# 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"
}'
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.alluxio.io/ee-ai-en/ai-3.2/feature/cache-free.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.