arangodb/Documentation/DocuBlocks/WalLogfileReserveLogfiles.md

@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