It's relatively tightly coupled with relational databases (like MySQL or PostgreSQL), so, having a NoSQL database (like Couchbase, MongoDB, Cassandra, etc) as the main store engine is not very easy.

stockholm

// storage : XYZ.COM LLC
// https://www.iana.org/domains/root/db/storage.html
storage

// store : Radix Technologies Inc.
// https://www.iana.org/domains/root/db/store.html
store

// stream : dot Stream Limited
// https://www.iana.org/domains/root/db/stream.html
stream

// studio : Dog Beach, LLC

			endpoint := clnt.EndpointURL().String()
			if errInt, ok := opts.checkReadyErr.Load(endpoint); !ok {
				err = checkRemoteEndpoint(ctx, clnt.EndpointURL())
				opts.checkReadyErr.Store(endpoint, err)
			} else {
				if errInt == nil {
					err = nil
				} else {
					err, _ = errInt.(error)
				}
			}
			switch err.(type) {
			case BucketRemoteIdenticalToSource:

   */

  private transient Map<K, Collection<V>> map;
  private transient int totalSize;

  /**
   * Creates a new multimap that uses the provided map.
   *
   * @param map place to store the mapping from each key to its corresponding values
   * @throws IllegalArgumentException if {@code map} is not empty
   */
  protected AbstractMapBasedMultimap(Map<K, Collection<V>> map) {
    checkArgument(map.isEmpty());

     * We will still use the readXxxWireFormat return values to
     * indicate how many bytes(note: readParameterWordsWireFormat
     * returns bytes read and not the number of words(but the
     * wordCount member DOES store the number of words)) we
     * actually read. Incedentally this is important to the
     * AndXServerMessageBlock class that needs to potentially
     * read in another smb's parameter words and bytes based on

			select {
			case <-ctx.Done():
				// Nobody wants it.
			case resCh <- results:
			}
		}
	}()
	return func() (metaCacheEntriesSorted, error) {
		select {
		case <-ctx.Done():
			done.Store(true)
			return metaCacheEntriesSorted{}, ctx.Err()
		case r := <-resultsDone:
			return r, resErr
		}
	}
}

// readOldGNUSparseMap reads the sparse map from the old GNU sparse format.
// The sparse map is stored in the tar header if it's small enough.
// If it's larger than four entries, then one or more extension headers are used
// to store the rest of the sparse map.
//
// The Header.Size does not reflect the size of any extended headers used.
// Thus, this function will read from the raw io.Reader to fetch extra headers.

These modes accept only 1, 2, 4, and 8 as scale factors.
</li>

</ul>

<p>
When using the compiler and assembler's
<code>-dynlink</code> or <code>-shared</code> modes,
any load or store of a fixed memory location such as a global variable
must be assumed to overwrite <code>CX</code>.
Therefore, to be safe for use with these modes,
assembly sources should typically avoid CX except between memory references.

	ANDW	$0x6006000060060, R27, R5                        // ERROR "cannot use REGTMP as source"
	STP	(R3, R4), 0x1234567(R27)                         // ERROR "REGTMP used in large offset store"
	LDP	0x1234567(R27), (R3, R4)                         // ERROR "REGTMP used in large offset load"
	STP	(R26, R27), 700(R2)                              // ERROR "cannot use REGTMP as source"

false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference,\n    this.options.positionFixed\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n...