private fun getCacheOnlyResponse(request: Request): Response? {
    if (client.cache != null) {
      try {
        // Use the cache without hitting the network first
        // 504 code indicates that the Cache is stale
        val onlyIfCached =
          CacheControl.Builder()
            .onlyIfCached()
            .build()

        var cacheUrl = request.url

        val cacheRequest =

    // TODO check for Jvm or handle Long/long correctly
//    assertThat(request.tag(Long::class)).isSameAs(longTag)
  }

  /** Confirm that we don't accidentally share the backing map between objects. */
  @Test
  fun tagsAreImmutable() {
    val builder =
      Request.Builder()
        .url("https://square.com")
    val requestA = builder.tag(String::class, "a").build()

          },
        )
        .build()
    dns["san.com"] = Dns.SYSTEM.lookup(server.hostName).subList(0, 1)
    assert200Http2Response(execute(url), server.hostName)

    // Simulate a stale connection in the pool.
    connection.get()!!.socket().close()
    val sanUrl = url.newBuilder().host("san.com").build()
    assert200Http2Response(execute(sanUrl), "san.com")

stordal.no store store.bb store.dk store.nf store.ro store.st store.ve storebase.store storfjord.no storj.farm stpetersburg.museum strand.no stranda.no stream streamlit.app streamlitapp.com stripper.jp stryn.no student.aero studio study stuff-4-sale.org stuff-4-sale.us stufftoread.com stuttgart.museum style su su.paba.se sub.jp sucks sue.fukuoka.jp suedtirol.it suginami.tokyo.jp sugito.saitama.jp suifu.ibaraki.jp suisse.museum suita.osaka.jp sukagawa.fukushima.jp sukumo.kochi.jp sula.no suldal.no suli.hu...

everywhere. Otherwise the two cache instances will stomp on each other, corrupt the response cache, and possibly crash your program.

Response caching uses HTTP headers for all configuration. You can add request headers like `Cache-Control: max-stale=3600` and OkHttp's cache will honor them. Your webserver configures how long responses are cached with its own response headers, like `Cache-Control: max-age=9600`. There are cache headers to force a cached response, force a network response, or force...