replace "DEL" Commands with "UNLINK". #160
Merged
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Implements #158
This PR replaces DEL Command with UNLINK command like I suggested in #158
Details about UNLINK can be found here https://redis.io/commands/unlink .
As noticed here redis/redis#1748 (comment) this will not change the behavior.
As there is no check of Redis version included, it will break Redis Versions < 4.0 through.
As Redis 4.0 was released on 2017-07-14 and Redis 3 went EOL with the Redis 5 on 2018-10-17, I don't expect this being an issue.