}
  }

  /**
   * We only rebuild the journal when it will halve the size of the journal and eliminate at least
   * 2000 ops.
   */
  private fun journalRebuildRequired(): Boolean {
    val redundantOpCompactThreshold = 2000
    return redundantOpCount >= redundantOpCompactThreshold &&
      redundantOpCount >= lruEntries.size
  }

  /**