I did it with node.js but it is changing after some interval.
<code>
setInterval(function(){
var d =new Date().getTime();
console.log("====================== ");
console.log("unix => ",d);
i=parseInt(d)
console.log("Divid i/86400=> ",i/86400);
console.log("Modulo i%86400=> ",i%86400);
console.log("====================== ");
},2000);
</code>
Am I doing wrong?
On Mon, Apr 30, 2012 at 9:54 PM, Tyler Hobbs <[email protected]> wrote:
> Correct, that's exactly what I'm saying.
>
>
> On Mon, Apr 30, 2012 at 10:37 AM, samal <[email protected]> wrote:
>
>> thanks tyler for reply.
>>
>> are you saying user1uuid_*{ts%86400}* would lead to unique day bucket
>> which will be timezone {NZ to US} independent? I will try.
>>
>>
>> On Mon, Apr 30, 2012 at 8:25 PM, Tyler Hobbs <[email protected]> wrote:
>>
>>> Don't use dates or datestamps as the buckets for your row keys, use a
>>> unix timestamp modulo whatever size you want your bucket to be instead.
>>> Timestamps don't involve time zones or any of that nonsense.
>>>
>>> So, instead of having keys like "user1uuid_30042012", the second half
>>> would be replaced the current unix timestamp mod 86400 (the number of
>>> seconds in a day).
>>>
>>>
>>> On Mon, Apr 30, 2012 at 1:46 AM, samal <[email protected]> wrote:
>>>
>>>> Hello List,
>>>>
>>>> I need suggestion/ recommendation on time series data.
>>>>
>>>> I have requirement where users belongs to different timezone and they
>>>> can subscribe to global group.
>>>> When users at specific timezone send update to group it is available to
>>>> every user in different timezone.
>>>>
>>>> I am using GroupSubscribedUsers CF where all update to group are push
>>>> to "Each User" time line, and key is timelined by useruuid_date(one day
>>>> update of all groups) and columns are group updates.
>>>>
>>>> GroupSubscribedUsers ={
>>>> user1uuid_30042012:{//this user belongs to same timezone
>>>> timeuuid1:JSON[group1update1]
>>>> timeuuid2:JSON[group2update2]
>>>> timeuuid3:JSON[group1update2]
>>>> timeuuid4:JSON[group4update1]
>>>> },
>>>> user2uuid_30042012:{//this user belongs to different timezone where
>>>> date has changed already to 1may but 30 april is getting update
>>>> timeuuid1:JSON[group1update1]
>>>> timeuuid2:JSON[group2update2]
>>>> timeuuid3:JSON[group1update2]
>>>> timeuuid4:JSON[group4update1]
>>>> timeuuid5:JSON[groupNupdate1]
>>>> },
>>>>
>>>> }
>>>>
>>>> I have noticed this approach is good for single time zone when
>>>> different timezone come into picture it breaks.
>>>>
>>>> I am thinking of like when user pushed update to group ->get user who
>>>> is subscribed to group->check user timezone->push time series in user time
>>>> zone. So for one user update will be on 30april where as other may have on
>>>> 29april and 1may, using timestamps i can find out hours ago update came.
>>>>
>>>> Is there any better approach?
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> >>>Samal
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Tyler Hobbs
>>> DataStax <http://datastax.com/>
>>>
>>>
>>
>
>
> --
> Tyler Hobbs
> DataStax <http://datastax.com/>
>
>
