flowell

## in gunicorn.workers.gthread.py In order to avoid race condition, ```self.nr_conns -= 1``` need a lock for protection or self.nr_conns need to be an automic integer? ```python ... fs.add_done_callback(self.finish_request) # this...

rdb-adapter按pk进行hash在unique约束下存在问题

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# 问题背景 rdb-adapter打开concurrent模式后，会按pk进行hash，并发地在目的库上重放SQL # 问题描述 现有表A |id|name| |-|-| |1|1| |2|2| 表A存在除主键外的唯一性约束（unique constraint），也就是说表A存在两个唯一性约束 ``` pk: id uk: name ``` 现用户在源库执行SQL语句 ``` delete from A where name = 1; insert into A(name)...