Distributed Counter

> make run
go build
./counters
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G-Counter - Grow only counter
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Before Merge
client 1: 3
client 2: 6
After Merge
client 1: 9
client 2: 9
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PN-Counter - Positive Negative Counter
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Before Merge
client 3: 1
client 4: 3
After Merge
client 3: 4
client 4: 4