legacy_request_state_context_var: ContextVar[Optional[Dict[str, Any]]] = ContextVar(
    "legacy_request_state_context_var", default=None
)

async def set_up_request_state_dependency():
    request_state = {"user": "deadpond"}
    contextvar_token = legacy_request_state_context_var.set(request_state)
    yield request_state
    legacy_request_state_context_var.reset(contextvar_token)
```

- Deprecated prometheus request meta-metrics have been removed
 `http_request_duration_microseconds` `http_request_duration_microseconds_sum` `http_request_duration_microseconds_count`
 `http_request_size_bytes`
 `http_request_size_bytes_sum`
 `http_request_size_bytes_count`
 `http_requests_total, http_response_size_bytes`
 `http_response_size_bytes_sum`

- `sync_proxy_rules_latency_microseconds` -> `sync_proxy_rules_latency_seconds`
- `apiserver_request_count` -> `apiserver_request_total`
- `apiserver_request_latencies` -> `apiserver_request_latency_seconds`
- `apiserver_request_latencies_summary` -> `apiserver_request_latency_seconds`
- `apiserver_dropped_requests` -> `apiserver_dropped_requests_total`
- `etcd_helper_cache_hit_count` -> `etcd_helper_cache_hit_total`

- The 404 request handler for the GCE Ingress load balancer now exports prometheus metrics, including:

  - `http_404_request_total` (the number of 404 requests handled)
  - `http_404_request_duration_ms` (the amount of time the server took to respond in ms)

  - *apiserver_storage_list_evaluated_objects_total*: Counter of objects tested in the course of serving a LIST request from etcd, broken down by resource
  - *apiserver_storage_list_returned_objects_total*: Counter of objects returned for a LIST request from etcd, broken down by resource ([#104983](https://github.com/kubernetes/kubernetes/pull/104983), [@MikeSpreitzer](https://github.com/MikeSpreitzer))

- Added a path `/header?key=` to `agnhost netexec` allowing one to view what the header value is of the incoming request.

  Ex:
  ```

- If the user specifies an invalid timeout in the request URL, the request will be aborted with an HTTP 400.

- CRI now supports a "runtime_handler" field for RunPodSandboxRequest, used for selecting the runtime configuration to run the sandbox...

      - `kubeproxy_sync_proxy_rules_latency_microseconds` -> `kubeproxy_sync_proxy_rules_duration_seconds`
      - `apiserver_request_latencies` -> `apiserver_request_duration_seconds`
      - `apiserver_dropped_requests` -> `apiserver_dropped_requests_total`
      - `etcd_request_latencies_summary` -> `etcd_request_duration_seconds`
      - `apiserver_storage_transformation_latencies_microseconds ` -> `apiserver_storage_transformation_duration_seconds`

  - `priority_level_request_count_samples` is replaced with `priority_level_request_utilization`, which samples every nanosecond rather than every millisecond; the old metric conveyed utilization despite its name.
  - `priority_level_request_count_watermarks` is removed.