Hi folks,
somwhere on my golang journey ("don't k now where and when") I was teached
that mutexes are very expensive and we should prefer to communicate over
channels instead of working with mutexes.
I trusted it until today. I explained it to our aprentice based on my
knowledge and he asked me if i can show him the performance difference.
Therefore I wrote this little demo with the expectation that the channel
solution will beat the mutex one and was really surprised when I saw that
the mutex based solution beats the channels one most of the time by factor
2.
https://play.golang.org/p/Kf9VBSoTLcU
What am I missing here or is it not true anymore that mutexes are so
expensive that we should prefer Communicating over Sharing.
kind regards
Reinhard Lüdiger
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