- Temporary credentials have a limited lifetime, there is no need to rotate them or explicitly revoke them. Expired temporary credentials cannot be reused.

## Identity Federation

*   Fixes vulnerabilities caused by incomplete validation in `SparseAdd`
    ([CVE-2021-29609](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29609))
*   Fixes vulnerabilities caused by incomplete validation in
    `SparseSparseMinimum`
    ([CVE-2021-29607](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29607))
*   Fixes vulnerabilities caused by incomplete validation in `SparseReshape`

{* ../../docs_src/dependencies/tutorial006_an_py39.py hl[10,15] *}

### Return values { #return-values }

And they can return values or not, the values won't be used.

So, you can reuse a normal dependency (that returns a value) you already use somewhere else, and even though the value won't be used, the dependency will be executed:

{* ../../docs_src/dependencies/tutorial006_an_py39.py hl[11,16] *}

```Python
from starlette.exceptions import HTTPException as StarletteHTTPException
```

### Reuse **FastAPI**'s exception handlers { #reuse-fastapis-exception-handlers }

If you want to use the exception along with the same default exception handlers from  **FastAPI**, you can import and reuse the default exception handlers from `fastapi.exception_handlers`:

{* ../../docs_src/handling_errors/tutorial006.py hl[2:5,15,21] *}

{* ../../docs_src/custom_docs_ui/tutorial001.py hl[8] *}

### Include the custom docs { #include-the-custom-docs }

Now you can create the *path operations* for the custom docs.

You can reuse FastAPI's internal functions to create the HTML pages for the docs, and pass them the needed arguments:

By default, MinIO supports path-style requests that are of the format <http://mydomain.com/bucket/object>. `MINIO_DOMAIN` environment variable is used to enable virtual-host-style requests. If the request `Host` header matches with `(.+).mydomain.com` then the matched pattern `$1` is used as bucket and the path is used as object. Read more about path-style and virtual-host-style [here](http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAPI.html).

Example:

	err := gorm.G[User](DB).CreateInBatches(ctx, &users, 2)
	if err != nil {
		t.Errorf("failed to create users")
	}

	reusedb := gorm.G[User](DB).Where("name like ?", "TestGenericsReuse%")

	sg := sync.WaitGroup{}
	for i := 0; i < 5; i++ {
		sg.Add(1)

		go func() {
			if u1, err := reusedb.Where("id = ?", users[0].ID).First(ctx); err != nil {
				t.Errorf("failed to find user, got error: %v", err)

And it will save the returned value in a <abbr title="A utility/system to store computed/generated values, to reuse them instead of computing them again.">"cache"</abbr> and pass it to all the "dependants" that need it in that specific request, instead of calling the dependency multiple times for the same request.

* Import `Jinja2Templates`.
* Create a `templates` object that you can reuse later.
* Declare a `Request` parameter in the *path operation* that will return a template.
* Use the `templates` you created to render and return a `TemplateResponse`, pass the name of the template, the request object, and a "context" dictionary with key-value pairs to be used inside of the Jinja2 template.

{* ../../docs_src/templates/tutorial001.py hl[4,11,15:18] *}

/target/
/work/
/bin/
/.settings/
.project
.classpath
*.iml
.idea
.DS_Store
dependency-reduced-pom.xml