* The **file** that can be **executed** by the operating system, for example: `python`, `python.exe` or `uvicorn`.
* A particular program while it is **running** on the operating system, using the CPU, and storing things on memory. This is also called a **process**.

### What is a Process

The word **process** is normally used in a more specific way, only referring to the thing that is running in the operating system (like in the last point above):

## Einfach und leistungsstark

Obwohl das hierarchische Dependency Injection System sehr einfach zu definieren und zu verwenden ist, ist es dennoch sehr mächtig.

Sie können Abhängigkeiten definieren, die selbst wiederum Abhängigkeiten definieren können.

That way, you can create a token with an expiration of, let's say, 1 week. And then when the user comes back the next day with the token, you know that user is still logged in to your system.

    Then APIStar stopped to exist as a server and Starlette was created, and was a new better foundation for such a system. That was the final inspiration to build **FastAPI**.

    I consider **FastAPI** a "spiritual successor" to APIStar, while improving and increasing the features, typing system, and other parts, based on the learnings from all these previous tools.

## Used by **FastAPI**

  // readOnlyRootFilesystem when set to true will force containers to run with a read only root file
  // system.  If the container specifically requests to run with a non-read only root file system
  // the PSP should deny the pod.
  // If set to false the container may run with a read only root file system if it wishes but it
  // will not be forced to.
  // +optional
  optional bool readOnlyRootFilesystem = 14;

message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.
  repeated Subject subjects = 1;

message PolicyRulesWithSubjects {
  // subjects is the list of normal user, serviceaccount, or group that this rule cares about.
  // There must be at least one member in this slice.
  // A slice that includes both the system:authenticated and system:unauthenticated user groups matches every request.
  // +listType=atomic
  // Required.
  repeated Subject subjects = 1;

          }
        }
      }

      val startNs = System.nanoTime()
      val response: Response
      try {
        response = chain.proceed(request)
      } catch (e: Exception) {
        logger.log("<-- HTTP FAILED: $e")
        throw e
      }

      val tookMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs)

      val responseBody = response.body!!

* Selbst Abhängigkeiten können Abhängigkeiten haben, woraus eine Hierarchie oder ein **„Graph“ von Abhängigkeiten** entsteht.
* Alles **automatisch gehandhabt** durch das Framework.

  // This field enables Kubernetes to communicate with storage systems that do
  // not share the same nomenclature for nodes. For example, Kubernetes may
  // refer to a given node as "node1", but the storage system may refer to
  // the same node as "nodeA". When Kubernetes issues a command to the storage
  // system to attach a volume to a specific node, it can use this field to