dhis2-users team mailing list archive

[Lars Helge Øverland <larshelge@xxxxxxxxx>]

Might be possible to add a caching directive in that location (haven't
checked if nginx or dhis wins) e.g.

add_header    Cache-Control  no-cache, no-store;



On Mon, Sep 16, 2013 at 11:46 AM, Lars Helge Øverland
<larshelge@xxxxxxxxx>wrote:

> It also implies that it must be acceptable that the end-user clears
> browser cache.
>
>
> On Mon, Sep 16, 2013 at 11:34 AM, Bob Jolliffe <bobjolliffe@xxxxxxxxx>wrote:
>
>> Well this would just solve the problem for one report.  Where there is
>> one there will be more ...
>>
>>
>> On 16 September 2013 10:22, Jason Pickering <jason.p.pickering@xxxxxxxxx>wrote:
>>
>>> Why not just  use a new location ? Is it too easy or am I just not
>>> getting it or something similar/more elegant?
>>>
>>> location ~ /api/reports/<UID OF REPORT GOES HERE>/* {
>>>
>>>       proxy_redirect    off;
>>>       proxy_set_header  Host               $host;
>>>       proxy_set_header  X-Real-IP          $remote_addr;
>>>       proxy_set_header  X-Forwarded-For    $proxy_add_x_forwarded_for;
>>>       proxy_set_header  X-Forwarded-Proto  http;
>>>       #proxy_cache       dhis; DONT CACHE!
>>>
>>> }
>>>
>>> Regards,
>>> Jason
>>>
>>>
>>>
>>> On Mon, Sep 16, 2013 at 11:07 AM, Bob Jolliffe <bobjolliffe@xxxxxxxxx>wrote:
>>>
>>>> I think the sendfile feature has to do with whether nginx does
>>>> asynchronous i/o using the sendfile() function in linux kernel, so I doubt
>>>> turning it on or off is going to help us here.
>>>>
>>>> Agree with Jason that pulling stuff back out of the cache is a hack but
>>>> trying hard to think of a workaround.
>>>>
>>>> Lars suggestion is interesting.  Probably the proper eventual solution
>>>> is to have a checkbox on the report design ("Don't Cache").  Mind you once
>>>> its cached once you are stuck till its expired again.
>>>>
>>>> Randy I can disable caching on nginx temporarily and we can monitor how
>>>> the performance is.  You will still have browser cache and your postgres is
>>>> quite well provisioned so it might be ok.
>>>>
>>>> Bob
>>>>
>>>> On 15 September 2013 19:00, Saptarshi Purkayastha <sunbiz@xxxxxxxxx>wrote:
>>>>
>>>>> is the following mentioned in nginx.conf
>>>>> sendfile=on;
>>>>> This will make the file sending cached by nginx.
>>>>> If you turn this off... nginx will send the generated file to user,
>>>>> instead of the one that's cached
>>>>>
>>>>> ---
>>>>> Regards,
>>>>> Saptarshi PURKAYASTHA
>>>>> ------------------------------
>>>>> Date: Sun, 15 Sep 2013 19:56:39 +0200
>>>>> From: larshelge@xxxxxxxxx
>>>>> To: jason.p.pickering@xxxxxxxxx
>>>>> CC: dhis2-users@xxxxxxxxxxxxxxxxxxx
>>>>> Subject: Re: [Dhis2-users] Standard iReports cache problem
>>>>>
>>>>>
>>>>> Of course that doesn't fix the problem with the constantly updated
>>>>> report (unless you create a Resource and points it to that Report including
>>>>> that query param). If this is a special case for just one report then I
>>>>> guess Jason's suggestion on a special nginx location would be feasible. We
>>>>> could implement a system feature but that will take longer.
>>>>>
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>>>>>
>>>>
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>>>>
>>>
>>
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>>
>