if not res then ngx.say("failed to get value: ", err) return end if res == ngx.null then ngx.say("key not found") else ngx.say("the value is: ", res) end -- 关闭连接 red:close()}}} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19...