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chenghung/gist:a0596299542e062f943b

Created November 13, 2014 02:36
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gistfile1.txt
10 def get_sequence(name)
11 data = self.find_or_create_by id: name
12
13 data.with_lock do # could not get lock error here
14 data.sequence += 1
15 data.save!
16
17 data.sequence
18 end
19 end
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