Retrieving data from cache¶
This API request retrieves an object from Backendless cache. If object is not present in cache, the method returns null for complex types or default value for primitive values.
- (void)getWithKey:(NSString * _Nonnull)key responseHandler:^(id _Nonnull)responseHandler errorHandler:^(Fault * _Nonnull)errorHandler;
func get(key: String, responseHandler: ((Any?) -> Void)!, errorHandler: ((Fault) -> Void)!)
where:
| Argument | Description |
|---|---|
key |
identifies the object to retrieve from cache. |
Example¶
[Backendless.shared.cache getWithKey:@"CacheWeather" responseHandler:^(Weather *weather) {
NSLog(@"Object has been received from cache: %@", weather);
} errorHandler:^(Fault *fault) {
NSLog(@"Error: %@", fault.message);
}];
Backendless.shared.cache.get(key: "CacheWeather", ofType: Weather.self, responseHandler: { weather in
print("Object has been received from cache: \(weather)")
}, errorHandler: { fault in
print("Error: \(fault.message ?? "")")
})
Codeless Reference¶
where:
| Argument | Description |
|---|---|
key name |
Key assigned to the object to identify it in cache. The key is used to retrieve the object from cache or to check if the cache still contains the object. |
Returns a value associated with the requested key.
Consider the following key-value pair stored in cache:
The example below retrieves the value of the key "orderName" stored in cache.
The result of this operation will look as shown below after the Codeless logic runs:
