Pipeline Redis commands for https://github.com/ulule/limiter/blob/master/store_redis.go#L65 / https://groups.google.com/forum/?fromgroups#!topic/golang-nuts/lK7JSHAmYd0

store_redis.go

// Will return 0 (no-op) if the key already exists
c.Send("SETNX", "key", 1)
// Will return integer 0 if the key doesn’t exist
c.Send("EXPIRE", rate.Period.Seconds())
c.Flush()

exists, err := redis.Bool(c.Receive())
if err != nil {
	return ctx, err
}

// We can ignore this: the value of exists tells us what we need.
// (just need to flush the value out of the buffer)
_, err := c.Receive
if err != nil {
	return ctx, err
}

if !exists {
	return Context{
		// ...
	}
}

// In addition, for keys already existing, we need to INCR the value
	c.Send("INCR", key)
	c.Send("TTL", key)
	c.Flush()

	count, err := redis.Int64(c.Receive())
	if err != nil {
		return ctx, err
	}

	ttl, err := redis.Int64(c.Receive())
	if err != nil {
		return ctx, err
	}

	
	// Check count and TTL as per existing code
	// ...
	// ...

	return Context{
		// ...
	}
}