* segments, each governed by its own write lock. The segment lock is taken once for each explicit
   * write, and twice for each cache loading computation (once prior to loading the new value, and
   * once after loading completes). Much internal cache management is performed at the segment
   * granularity. For example, access queues and write queues are kept per segment when they are

 * of project dependencies. This optimizes module loading during runtime, as we will only load external
 * modules that are not loaded transitively by other project modules.
 *
 * We perform this filtering, since if we simply include all external dependencies, regardless of whether
 * they are already loaded transitively, there is a measurable performance impact during module-loading.
 */

require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Overview](https://min.io/docs/minio/linux/operations/concepts/erasure-coding.html)
for more complete documentation.

### Stable

   * segments, each governed by its own write lock. The segment lock is taken once for each explicit
   * write, and twice for each cache loading computation (once prior to loading the new value, and
   * once after loading completes). Much internal cache management is performed at the segment
   * granularity. For example, access queues and write queues are kept per segment when they are

    @CheckForNull
    V get();

    /**
     * Waits for a value that may still be loading. Unlike get(), this method can block (in the case
     * of FutureValueReference).
     *
     * @throws ExecutionException if the loading thread throws an exception
     * @throws ExecutionError if the loading thread throws an error
     */
    V waitForValue() throws ExecutionException;

This can be very useful for setting up **resources** that you need to use for the whole app, and that are **shared** among requests, and/or that you need to **clean up** afterwards. For example, a database connection pool, or loading a shared machine learning model.

## Use Case

Let's start with an example **use case** and then see how to solve it with this.

}

// ErasureInfo holds erasure coding and bitrot related information.
type ErasureInfo struct {
	// Algorithm is the string representation of erasure-coding-algorithm
	Algorithm string `json:"algorithm"`
	// DataBlocks is the number of data blocks for erasure-coding
	DataBlocks int `json:"data"`
	// ParityBlocks is the number of parity blocks for erasure-coding
	ParityBlocks int `json:"parity"`

	if iamOS.objAPI == nil {
		return errServerNotInitialized
	}

	bootstrapTraceMsg("loading all IAM items")

	listedConfigItems, err := iamOS.listAllIAMConfigItems(ctx)
	if err != nil {
		return fmt.Errorf("unable to list IAM data: %w", err)
	}

	// Loads things in the same order as `LoadIAMCache()`

	bootstrapTraceMsg("loading policy documents")

	policiesList := listedConfigItems[policiesListKey]

	// systemTargets is the set of enabled loggers.
	// Must be immutable at all times.
	// Can be swapped to another while holding swapMu
	systemTargets  = []Target{}
	swapSystemMuRW sync.RWMutex

	// auditTargets is the list of enabled audit loggers
	// Must be immutable at all times.
	// Can be swapped to another while holding swapMu
	auditTargets  = []Target{}
	swapAuditMuRW sync.RWMutex

	// This is always set represent /dev/console target

        valueOffset = UNSAFE.objectFieldOffset(ak.getDeclaredField("value"));
      } catch (Exception e) {
        throw new Error(e);
      }
    }
  }

  /**
   * ThreadLocal holding a single-slot int array holding hash code. Unlike the JDK8 version of this
   * class, we use a suboptimal int[] representation to avoid introducing a new type that can impede
   * class-unloading when ThreadLocals are not removed.
   */