Redis CAS (Compare and Swap)

Redis native module to add support for compare and swap

Syntax

CAS key current_value new_value

Compare the value of a key and set if the passed current value hasn't changed

Return

Returns number of modified keys

Example usage

127.0.0.1:6379> set foo bar
OK
127.0.0.1:6379> cas foo bar baz
(integer) 1
127.0.0.1:6379> cas foo bar baz
(integer) 0

Build and load with taskfile

task load-redis-module

lib.rs:

Redis native module to add support for compare and swap