Redis：记录查询输出

I have found that a redis application is returning, from its REST API (which uses a redis library), the wrong result (0, instead of 5).

In my code for running this query via Go, I run:

println("LLEN HANDLER")
infoL := HandleError(pool.Get(0).Do("LLEN","xyz")).(int64)
lengthJSON := HandleError(json.MarshalIndent(infoL, "", " ")).([]byte)
print("RETURN LEN = "+string(lengthJSON))
rw.Write(lengthJSON)

This returns 0.

However, if I run the query from redis-cli (on slaves, or on master)

LLEN xyz

I get the correct result. The result is 5.

In particular, I'm using https://github.com/xyproto/simpleredis , and I noticed that in the same app, all queries of the form:

list := simpleredis.NewList(pool, key)
//members := HandleError(list.GetAll()).([]string)
members := HandleError(list.GetLastN(4)).([]string)

work normally and return non-null data, which confirms that the network connectivity etc in the system is working.

simpleredis runs a SELECT [dbindex] command before running the query.

Does it work if you run SELECT before LLEN?