mirror of https://gitee.com/bigwinds/arangodb
80 lines
2.1 KiB
Plaintext
80 lines
2.1 KiB
Plaintext
!CHAPTER Administration
|
|
|
|
!SECTION Durability Configuration
|
|
|
|
!SUBSECTION Global Configuration
|
|
|
|
There are global configuration values for durability, which can be adjusted by
|
|
specifying the following configuration options:
|
|
|
|
@startDocuBlock databaseWaitForSync
|
|
|
|
|
|
@startDocuBlock databaseForceSyncProperties
|
|
|
|
|
|
@startDocuBlock WalLogfileSyncInterval
|
|
|
|
|
|
!SUBSECTION Per-collection configuration
|
|
|
|
You can also configure the durability behavior on a per-collection basis.
|
|
Use the ArangoDB shell to change these properties.
|
|
|
|
|
|
@startDocuBlock collectionProperties
|
|
|
|
|
|
!SUBSECTION Per-operation configuration
|
|
|
|
Many data-modification operations and also ArangoDB's transactions allow to specify
|
|
a *waitForSync* attribute, which when set ensures the operation data has been
|
|
synchronized to disk when the operation returns.
|
|
|
|
!SECTION Disk-Usage Configuration
|
|
|
|
The amount of disk space used by ArangoDB is determined by a few configuration
|
|
options.
|
|
|
|
!SUBSECTION Global Configuration
|
|
|
|
The total amount of disk storage required by ArangoDB is determined by the size of
|
|
the write-ahead logfiles plus the sizes of the collection journals and datafiles.
|
|
|
|
There are the following options for configuring the number and sizes of the write-ahead
|
|
logfiles:
|
|
|
|
<!-- arangod/Wal/LogfileManager.h -->
|
|
@startDocuBlock WalLogfileReserveLogfiles
|
|
|
|
|
|
<!-- arangod/Wal/LogfileManager.h -->
|
|
@startDocuBlock WalLogfileHistoricLogfiles
|
|
|
|
|
|
<!-- arangod/Wal/LogfileManager.h -->
|
|
@startDocuBlock WalLogfileSize
|
|
|
|
|
|
<!-- arangod/Wal/LogfileManager.h -->
|
|
@startDocuBlock WalLogfileAllowOversizeEntries
|
|
|
|
|
|
<!-- arangod/Wal/LogfileManager.h -->
|
|
@startDocuBlock WalLogfileSuppressShapeInformation
|
|
|
|
|
|
When data gets copied from the write-ahead logfiles into the journals or datafiles
|
|
of collections, files will be created on the collection level. How big these files
|
|
are is determined by the following global configuration value:
|
|
|
|
<!-- arangod/RestServer/ArangoServer.h -->
|
|
@startDocuBlock databaseMaximalJournalSize
|
|
|
|
|
|
!SUBSECTION Per-collection configuration
|
|
|
|
The journal size can also be adjusted on a per-collection level using the collection's
|
|
*properties* method.
|
|
|