diff --git a/core/lib/Drupal/Core/Cache/ChainedFastBackend.php b/core/lib/Drupal/Core/Cache/ChainedFastBackend.php
index 6a825af..1098e01 100644
--- a/core/lib/Drupal/Core/Cache/ChainedFastBackend.php
+++ b/core/lib/Drupal/Core/Cache/ChainedFastBackend.php
@@ -73,6 +73,32 @@ class ChainedFastBackend implements CacheBackendInterface {
   protected $lastWriteTimestamp;
 
   /**
+   * The time at which the last write timestamp was fetched.
+   *
+   * @var float
+   */
+  protected $lastWriteTimestampFetchTime = 0.0;
+
+  /**
+   * How long, in seconds, the last write timestamp is valid.
+   *
+   * The last write timestamp is checked at least once per instantiation of
+   * this class (i.e., once per bin per PHP request). To minimize network
+   * traffic to the consistent backend, it is not rechecked within the same
+   * instance for this TTL duration. As a result, during this TTL window, it is
+   * possible for a cache invalidation that happens in a parallel request to
+   * not propagate to this request, but that is also the case anywhere that a
+   * static cache is used.
+   *
+   * 300ms is longer than most simple web requests, but lets long running
+   * requests (e.g., complex pages or command line processes) stay reasonably
+   * synchronized with changes happening in parallel requests.
+   *
+   * @var float
+   */
+  protected $lastWriteTimestampTtl = 0.3;
+
+  /**
    * Constructs a ChainedFastBackend object.
    *
    * @param \Drupal\Core\Cache\CacheBackendInterface $consistent_backend
@@ -233,7 +259,10 @@ public function removeBin() {
    * Gets the last write timestamp.
    */
   protected function getLastWriteTimestamp() {
-    if ($this->lastWriteTimestamp === NULL) {
+    $now = microtime(TRUE);
+    $timestamp_fetch_time_plus_ttl = $this->lastWriteTimestampFetchTime + $this->lastWriteTimestampTtl;
+    if ($this->lastWriteTimestamp === NULL || ($now > $timestamp_fetch_time_plus_ttl)) {
+      $this->lastWriteTimestampFetchTime = $now;
       $cache = $this->consistentBackend->get(self::LAST_WRITE_TIMESTAMP_PREFIX . $this->bin);
       $this->lastWriteTimestamp = $cache ? $cache->data : 0;
     }