### Injeção de dependência

FastAPI inclui um sistema de <abbr title='também conhecido como "components", "resources", "services", "providers"'><strong>injeção de dependência</strong></abbr> extremamente fácil de usar, mas extremamente poderoso.

* Mesmo dependências podem ter dependências, criando uma hierarquia ou **"grafo" de dependências**.

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.1.0 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.1.1 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.1.6 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.0.1 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.0.2 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

A **`Session`** is what stores the **objects in memory** and keeps track of any changes needed in the data, then it **uses the `engine`** to communicate with the database.

We will create a FastAPI **dependency** with `yield` that will provide a new `Session` for each request. This is what ensures that we use a single session per request. 🤓

Then we create an `Annotated` dependency `SessionDep` to simplify the rest of the code that will use this dependency.

### Dependency Injection

FastAPI incluye un sistema de <abbr title='En español: Inyección de Dependencias. También conocido en inglés cómo: "components", "resources", "services", "providers"'><strong>Dependency Injection</strong></abbr> extremadamente poderoso y fácil de usar.

* Inclusive las dependencias pueden tener dependencias creando una jerarquía o un **"grafo" de dependencias**.

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.5.6 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....

rk.png keywords: - minio - storage - object-storage - s3 - cluster maintainers: - email: ******@****.*** name: MinIO, Inc name: minio sources: - https://github.com/minio/minio version: 3.5.9 minio/values.yaml ## Provide a name in place of minio for `app:` labels ## nameOverride: "" ## Provide a name to substitute for the full names of resources ## fullnameOverride: "" ## set kubernetes cluster domain where minio is running ## clusterDomain: cluster.local ## Set default image, imageTag, and imagePullPolicy....