t.Once.Do(func() {
		t.ttl = ttl
		t.updateFn = update
		t.opts = opts
	})
}

// GetWithCtx will return a cached value or fetch a new one.
// passes a caller context, if caller context cancels nothing
// is cached.
// If the Update function returns an error the value is forwarded as is and not cached.
func (t *Cache[T]) GetWithCtx(ctx context.Context) (T, error) {
	v := t.val.Load()
	ttl := t.ttl
	vTime := t.lastUpdateMs.Load()

     * first initiated.
     */
    private var sentRequestMillis = 0L

    /**
     * Extension header set by OkHttp specifying the timestamp when the cached HTTP response was
     * first received.
     */
    private var receivedResponseMillis = 0L

    /** Etag of the cached response. */
    private var etag: String? = null

    /** Age of the cached response. */

To install:

1) chrome://extensions/
2) click "[+] Developer Mode" in top right
3) "Load unpacked extension..."
4) pick $GOROOT/misc/chrome/gophertool

  @get:JvmName("minFreshSeconds") val minFreshSeconds: Int,
  /**
   * This field's name "only-if-cached" is misleading. It actually means "do not use the network".
   * It is set by a client who only wants to make a request if it can be fully satisfied by the
   * cache. Cached responses that would require validation (ie. conditional gets) are not permitted
   * if this header is set.
   */

* vSphere cloud provider: vSphere Storage policy Support...

            return null;
        }
        VersionRange cached = CACHE_VERSION.get(version);
        if (cached == null) {
            List<Restriction> restrictions = Collections.emptyList();
            cached = new VersionRange(new DefaultArtifactVersion(version), restrictions);
            CACHE_VERSION.put(version, cached);
        }
        return cached;
    }

    /**

      testCorruptingCache {
        corruptMetadata {
          // mess with cipher suite
          it.replace("TLS_", "SLT_")
        }
      }

    assertThat(response.body.string()).isEqualTo("ABC.1") // cached
    assertThat(cache.requestCount()).isEqualTo(2)
    assertThat(cache.networkCount()).isEqualTo(1)
    assertThat(cache.hitCount()).isEqualTo(1)

 * under the License.
 */
package org.apache.maven.api.cache;

import org.apache.maven.api.annotations.Experimental;

/**
 * Enumeration defining different retention periods for cached data.
 * Each value represents a specific scope and lifetime for cached items.
 *
 * @since 4.0.0
 */
@Experimental
public enum CacheRetention {
    /**
     * Data should be persisted across Maven invocations.
     * Suitable for:

    }
  }

  /**
   * Returns a supplier that caches the instance supplied by the delegate and removes the cached
   * value after the specified time has passed. Subsequent calls to {@code get()} return the cached
   * value if the expiration time has not passed. After the expiration time, a new value is
   * retrieved, cached, and returned. See: <a
   * href="http://en.wikipedia.org/wiki/Memoization">memoization</a>
   *

		case "Deleted":
			z.Deleted, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Deleted")
				return
			}
		case "Cached":
			z.Cached, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Cached")
				return
			}
		case "NoMetadata":
			z.NoMetadata, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "NoMetadata")