Checking if key exists in cache¶
This API request checks if an object exists in cache. If object is present in cache, the method returns true, otherwise - false.
Backendless.Cache.contains( key ) .then( function( result ) { }) .catch( function( error ) { });
where:
Argument | Description |
---|---|
key |
identifies the object to check in cache. |
Example¶
var successCallback = function( response ) { console.log( "object exists in cache - " + response ); }; var failureCallback = function( fault ) { console.log( "error - " + fault.message ); }; Backendless.Cache.contains( "firstorder" ) .then( successCallback ) .catch( failureCallback );