>>>> Hello,
>>>>
>>>> If I understand the code correctly, when I don't have the cache file,
>>>> request is going directly
>>>> to upstream, so when I have 100 request at the time when I don't have
>>>> the cache file yet, all
>>>> those requests will go to upstream servers, am I correct?
>>>>
>>> Yes.
>>>
>> Wouldn't it be better to send only one request, and tell other to wait
>> for the page when updating is set?
>>
> Yes, of course, it would be better, however, currently it is not implemented.
Do You see any chance of implementing this in near future?