////////////////////////////////////////////////////////////////////////////////
/// @startDocuBlock WalLogfileReserveLogfiles
/// @brief maximum number of reserve logfiles
/// `--wal.reserve-logfiles`
///
/// The maximum number of reserve logfiles that ArangoDB will create in a
/// background process. Reserve logfiles are useful in the situation when an
/// operation needs to be written to a logfile but the reserve space in the
/// logfile is too low for storing the operation. In this case, a new logfile
/// needs to be created to store the operation. Creating new logfiles is
/// normally slow, so ArangoDB will try to pre-create logfiles in a background
/// process so there are always reserve logfiles when the active logfile gets
/// full. The number of reserve logfiles that ArangoDB keeps in the background
/// is configurable with this option.
/// @endDocuBlock
////////////////////////////////////////////////////////////////////////////////