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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

codeless_atomic_counters_decrement_1_return_current

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:

codeless_atomic_counters_decrement_1_return_previous_2

The example below decrements the value of the "CarsParkingLot" by 1. This operation returns 9, since the return current value box is checked.

codeless_atomic_counters_decrement_1_return_current_2

The result of this operation will look as shown below after the Codeless logic runs:

codeless_atomic_counters_decrement_1_return_previous_4