Decrement by 1, return current¶
Atomically decrements by one the current value and returns the updated (current) value of the counter. Multiple concurrent client requests are guaranteed to return unique updated value.
Method:¶
PUT
Endpoint URL¶
https://xxxx.backendless.app/api/counters/<counterName>/decrement/get
where:
| Argument | Description |
|---|---|
<counterName> |
name of the counter to decrement. |
Request headers¶
user-token: optional value obtained as a result of the login operation.
where:
| Argument | Description |
|---|---|
user-token |
Optional header. Contains a value returned by Backendless in a preceding user Login API call. The operation will be executed with the security policy associated currently logged in user. This means all permissions associated with the user and the roles assigned to the user will be enforced by Backendless. |
Request body¶
N/A
Response body¶
Numeric value - current value of the counter
Example¶
Make sure to replace xxxx in the domain name in the sample request below to the one assigned to your application.
curl -X PUT \
https://xxxx.backendless.app/api/counters/mycounter/decrement/get
Codeless Reference¶
where:
| Argument | Description |
|---|---|
counter name |
Name of the counter whose value must be decremented. |
return current value |
When this box is checked, the operation returns the current value of the counter. |
Returns the current value of the counter.
Consider the following counter:
The example below decrements the value of the "CarsParkingLot" by 1. This operation returns 9, since the return current value box is checked.
The result of this operation will look as shown below after the Codeless logic runs:
