Storage Capacity Tracking

Traditionally, the Kubernetes scheduler was based on the assumptions that additional persistent storage is available everywhere in the cluster and has infinite capacity. Topology constraints addressed the first point, but up to now pod scheduling was still done without considering that the remaining storage capacity may not be enough to start a new pod. [Storage capacity tracking](https://docs.k8s.io/concepts/storage/storage-capacity/) addresses that by adding...

    {{- print "apps/v1beta2" -}}
  {{- else -}}
    {{- print "apps/v1" -}}
  {{- end -}}
{{- end -}}

{{/*
Return the appropriate apiVersion for statefulset.
*/}}
{{- define "minio.statefulset.apiVersion" -}}
  {{- if semverCompare "<1.16-0" .Capabilities.KubeVersion.Version -}}
    {{- print "apps/v1beta2" -}}
  {{- else -}}
    {{- print "apps/v1" -}}
  {{- end -}}
{{- end -}}

	if seq != m.RecvSeq {
		if debugPrint {
			fmt.Printf("expected sequence %d, got %d\n", m.RecvSeq, seq)
		}
		m.disconnect(fmt.Sprintf("receive sequence number mismatch. want %d, got %d", m.RecvSeq, seq), false)
		return false
	}
	m.RecvSeq++
	return true
}

func (m *muxServer) message(msg message) {
	if debugPrint {
		fmt.Printf("muxServer: received message %d, length %d\n", msg.Seq, len(msg.Payload))

        int previous;
        long entry;
        do {
          previous = lastNext;
          lastNext = getNext(entry = entries[lastNext]);
        } while (lastNext != srcIndex);
        // here, entries[previous] points to the old entry location; update it
        entries[previous] = swapNext(entry, dstIndex);
      }
    } else {
      keys[dstIndex] = null;
      values[dstIndex] = 0;

If xxx is data, cgo arranges for C.xxx to refer to the C variable,
with the type translated as described above.  To do this, cgo must
introduce a Go variable that points at the C variable (the linker can
be told to initialize this pointer).  For example, if the gmp library
provided

	mpz_t zero;

then cgo would rewrite a reference to C.zero by introducing

	var _C_zero *C.mpz_t

		if srcEOF {
			fmt.Printf("only in target: %s\n", tgtCtnt.Key)
			tgtCtnt, tgtOk = <-tgtCh
			continue
		}

		// The same for target
		if tgtEOF {
			fmt.Printf("only in source: %s\n", srcCtnt.Key)
			srcCtnt, srcOk = nextObject(srcCh)
			continue
		}

		if srcCtnt.Key < tgtCtnt.Key {
			fmt.Printf("only in source: %s\n", srcCtnt.Key)

 natsConnection, _ := nats.Connect("nats://yourusername:yoursecret@localhost:4222")
 log.Println("Connected")

 // Subscribe to subject
 log.Printf("Subscribing to subject 'bucketevents'\n")
 natsConnection.Subscribe("bucketevents", func(msg *nats.Msg) {

  // Handle the message
  log.Printf("Received message '%s\n", string(msg.Data)+"'")
 })

 // Keep the connection alive
 runtime.Goexit()
}
```

```

![Events Diagram](../assets/images/******@****.***)

Here’s a [sample event listener](https://github.com/square/okhttp/blob/master/samples/guide/src/main/java/okhttp3/recipes/PrintEventsNonConcurrent.java) that prints each event with a timestamp.

```java
class PrintingEventListener extends EventListener {
  private long callStartNanos;

  private void printEvent(String name) {
    long nowNanos = System.nanoTime();

```python
from typing import Union


def say_hi(name: Union[str, None]):
        print(f"Hi {name}!")
```

O `typing` também tem um atalho para declarar que algo pode ser `None`, com `Optional`.

Aqui vai uma dica do meu ponto de vista bem subjetivo:

* 🚨 Evite usar `Optional[SomeType]`
* Em vez disso ✨ use **`Union[SomeType, None]`** ✨.

        LogStream logStream = LogStream.getInstance();

        // Test various PrintStream methods
        logStream.print("test");
        logStream.print(123);
        logStream.print(true);
        logStream.println();
        logStream.println("line");
        logStream.printf("formatted %d%n", 42);
        logStream.flush();

        String output = testOutput.toString();