val request1ReceivedAt = System.currentTimeMillis()
    assertThat(server.takeRequest().headers["If-None-Match"]).isNull()

    // Hit that stored response. It's different, but Vary says it doesn't matter.
    Thread.sleep(10) // Make sure the timestamps are unique.
    val cacheHit =
      executeSynchronously(
        "/",
        "Accept-Language",
        "en-US",
        "Accept-Charset",
        "UTF-8",
      )

    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)

    // Give the server time to enact the socket policy if it's one that could happen after the
    // client has received the response.
    Thread.sleep(500)
    val response2 = getResponse(newRequest("/b"))
    response1.body.source().timeout().timeout(100, TimeUnit.MILLISECONDS)
    assertContent("This comes after a busted connection", response2)

like what I get" is the same thing as "I get what I like"!'

  `You might just as well say,' added the Dormouse, who seemed to
be talking in his sleep, `that "I breathe when I sleep" is the
same thing as "I sleep when I breathe"!'

  `It IS the same thing with you,' said the Hatter, and here the
conversation dropped, and the party sat silent for a minute,

like what I get" is the same thing as "I get what I like"!'

  `You might just as well say,' added the Dormouse, who seemed to
be talking in his sleep, `that "I breathe when I sleep" is the
same thing as "I sleep when I breathe"!'

  `It IS the same thing with you,' said the Hatter, and here the
conversation dropped, and the party sat silent for a minute,

    assertThat(response1.header("Allow")).isNull()
    assertThat((response1.receivedResponseAtMillis - t0).toDouble()).isCloseTo(0.0, 250.0)

    // A conditional cache hit updates the cache.
    Thread.sleep(500) // Make sure t0 and t1 are distinct.
    val t1 = System.currentTimeMillis()
    val response2 = get(server.url("/a"))
    assertThat(response2.code).isEqualTo(HttpURLConnection.HTTP_OK)

- A new metric `lifecycle_handler_sleep_terminated_total` is added to record how many times LifecycleHandler sleep got unexpectedly terminated. ([#122456](https://github.com/kubernetes/kubernetes/pull/122456), [@AxeZhan](https://github.com/AxeZhan))