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Great article as usual. but I have to comments:
1- in go mutex example you have to send the mutex by example in order not to create new instance with each pass which will result in no real locking, more details here: eli. thegreenplace. net/2018/beware-of-copying-mutexes-in-go/
2- (I know this shouldn't be in the article since it is introduction :D) in redis example, the unlock function may result in a problem if one thread is stuck longer than the lock time and when back it deletes the lock, then it may have deleted another thread lock. a solution for this problem is described here: redis .io/commands/set/
Thanks Akef. Yes, you're right, will edit the article soon.
@Ahmed Akef, I can't see the 2 links. can you update your comment 😊
Abdelaziz Sliem I think hashnode blocks links comments.
I added spaces in the domain so it can't be identified, try to concatenate the URL parts to get the link Sayed Alesawy
Greate article Sayed Alesawy! very informative.