计算的剩余额度不对

[sydiesel]

计算剩余额度的时候，存在精度问题

[ndyakov]

Hello @sydiesel, can you pinpoint where the problem is? If so, would you like to open a PR for it?

[ndyakov]

@sydiesel looks like this should be reported in https://github.com/go-redis/redis_rate