func Test_metaCacheEntries_merge(t *testing.T) {
	org := loadMetacacheSampleEntries(t)
	a, b := org.shallowClone(), org.shallowClone()
	be := b.entries()
	for i := range be {
		//  Modify b so it isn't deduplicated.
		be[i].metadata = []byte("something-else")
	}
	// Merge b into a
	a.merge(b, -1)
	//nolint:gocritic
	want := append(loadMetacacheSampleNames, loadMetacacheSampleNames...)
	sort.Strings(want)
	got := a.entries().names()

     * @param accessResultData the access result data containing serialized data
     * @return the deserialized object
     */
    @Override
    public Object getData(final AccessResultData<?> accessResultData) {
        final byte[] data = accessResultData.getData();
        if (data != null) {
            try {
                return dataSerializer.fromBinaryToObject(data);
            } catch (final Exception e) {

controller & Replicaset**: the DELETE request of a replication controller or a replicaset becomes asynchronous by default. The object will continue to exist in the key-value store for some time. The API server will set its metadata.deletionTimestamp, add the "orphan" finalizer to its metadata.finalizers. The object will be deleted from the key-value store after the garbage collector orphans its dependents. Please refer to this [user-guide](http://kubernetes.io/docs/user-guide/garbage-collector/) for more...

因此，容器只消耗很少的資源，與直接執行行程相當（而虛擬機會消耗更多）。

容器也有其各自隔離的執行行程（通常只有一個行程）、檔案系統與網路，簡化部署、安全性與開發等。

## 什麼是容器映像 { #what-is-a-container-image }

容器是由容器映像啟動執行的。

容器映像是所有檔案、環境變數，以及在容器中應該執行的預設指令/程式的靜態版本。這裡的「靜態」意指容器映像不在執行，它只是被封裝的檔案與 metadata。

相對於儲存的靜態內容「容器映像」，「容器」通常指執行中的實例，也就是正在被執行的東西。

當容器啟動並執行時（自容器映像啟動），它可以建立或變更檔案、環境變數等。這些變更只會存在於該容器中，不會持久化回底層的容器映像（不會寫回磁碟）。

容器映像可類比為程式檔與其內容，例如 `python` 與某個 `main.py` 檔案。

### Other notable changes

* [GCE] Apiserver uses `InternalIP` as the most preferred kubelet address type by default. ([#59019](https://github.com/kubernetes/kubernetes/pull/59019), [@MrHohn](https://github.com/MrHohn))
* Use GCE metadata proxy v0.1.4-r1 to pick up security fixes. ([#60245](https://github.com/kubernetes/kubernetes/pull/60245), [@ihmccreery](https://github.com/ihmccreery))

            throw new GeneralSecurityException("Key rotation failed", e);
        }
    }

    /**
     * Internal method to store key without updating rotation metadata
     */
    private void storeSessionKeyInternal(String sessionId, byte[] key, String algorithm) {
        if (key == null || sessionId == null) {

					return
				}
			}
		case "Metadata":
			var zb0003 uint32
			zb0003, err = dc.ReadArrayHeader()
			if err != nil {
				err = msgp.WrapError(err, "Metadata")
				return
			}
			if cap(z.Metadata) >= int(zb0003) {
				z.Metadata = (z.Metadata)[:zb0003]
			} else {
				z.Metadata = make([]BatchJobKV, zb0003)
			}
			for za0002 := range z.Metadata {
				err = z.Metadata[za0002].DecodeMsg(dc)

            <option value="$PROJECT_DIR$/packaging/internal-build-reports" />
            <option value="$PROJECT_DIR$/packaging/public-api" />
            <option value="$PROJECT_DIR$/platforms/core-configuration/api-metadata" />
            <option value="$PROJECT_DIR$/platforms/core-configuration/base-diagnostics" />
            <option value="$PROJECT_DIR$/platforms/core-configuration/base-services-groovy" />

"altglyphitem","animatecolor","animatemotion","animatetransform","circle","clippath","defs","desc","ellipse","enterkeyhint","exportparts","filter","font","g","glyph","glyphref","hkern","image","inputmode","line","lineargradient","marker","mask","metadata","mpath","part","path","pattern","polygon","polyline","radialgradient","rect","stop","style","switch","symbol","text","textpath","title","tref","tspan","view","vkern"]),x=i(["feBlend","feColorMatrix","feComponentTransfer","feComposite","feConvol...

          val clean = entry.cleanFiles[i]
          fileSystem.atomicMove(dirty, clean)
          val oldLength = entry.lengths[i]
          // TODO check null behaviour
          val newLength = fileSystem.metadata(clean).size ?: 0
          entry.lengths[i] = newLength
          size = size - oldLength + newLength
        }
      } else {
        fileSystem.deleteIfExists(dirty)
      }
    }