Update documentation

README.md

@@ -193,7 +193,7 @@ You can get the _Bearer Token_ via `POST http://localhost:3333/api/v1/auth/anony
 
 ### Health Check (experimental)
 
-The endpoint checks the connection to the database and to _Redis_. It is suitable as the readiness probe of an orchestrator (e.g. `readinessProbe` in _Kubernetes_) and as the `healthcheck` in _Docker Compose_.
+The endpoint checks the connection to the database and to _Redis_. It is suitable as the readiness probe of an orchestrator (e.g. `readinessProbe` in _Kubernetes_) and as the `healthcheck` in _Docker Compose_. The check of _Redis_ can take up to 5 seconds. Thus, set the timeout of the probe to at least 5 seconds (e.g. `timeoutSeconds: 5` in _Kubernetes_).
 
 #### Request
 
@@ -215,7 +215,7 @@ The endpoint checks the connection to the database and to _Redis_. It is suitabl
 
 ### Liveness Probe (experimental)
 
-The endpoint answers without a check of the database or _Redis_. It is suitable as the liveness probe of an orchestrator (e.g. `livenessProbe` in _Kubernetes_), so that an outage of a dependency does not restart the container.
+The endpoint answers without a check of the database or _Redis_. It is suitable as the liveness probe of an orchestrator (e.g. `livenessProbe` in _Kubernetes_), so that an outage of a dependency after the start does not restart the container. The database migrations run before the server starts. Thus, also use the endpoint as the startup probe (e.g. `startupProbe` in _Kubernetes_), so that a long migration does not restart the container.
 
 #### Request