Constructor
A class representation of the Read Preference.
-
class ReadPreference()
| Arguments: |
- the (string) – read preference type
- tags (object) –
|
|---|
| Returns: | readpreference
|
|---|
- Read Preferences
- ReadPreference.PRIMARY, Read from primary only. All operations produce an error (throw an exception where applicable) if primary is unavailable. Cannot be combined with tags (This is the default.).
- ReadPreference.PRIMARY_PREFERRED, Read from primary if available, otherwise a secondary.
- ReadPreference.SECONDARY, Read from secondary if available, otherwise error.
- ReadPreference.SECONDARY_PREFERRED, Read from a secondary if available, otherwise read from the primary.
- ReadPreference.NEAREST, All modes read from among the nearest candidates, but unlike other modes, NEAREST will include both the primary and all secondaries in the random selection.
