API rate limit?

[akshayjava]

Hi Yahoos!

I have a quick question regarding the del.icio.us API rate limit. Can
someone please let me know what is the rate limit for del.icio.us API
usage? I've hit

"ERROR 999: Unable to process request at this time -- error 999"

And I am not sure if this is because of some server issues or due to
reaching the rate limit.

Thanks for your help
Akshay

[Toby Elliott]

Thanks for your question. This result means that you've hit the rate  
limit. I can't give you exact numbers, as it depends on your usage,  
but I will say that if you are using posts/all much at all it is  
likely to start blocking quickly.

If you were hitting us fairly hard, it's a sign that you should back  
off for a while, then hit us less hard when you resume. If you  
weren't, it may be a problem with your ISP using the same connection  
for multiple users, and someone else on it abusing us, in which case  
you should notify your ISP.

Regards,
Toby Elliott
del.icio.us


On Mar 3, 2008, at 11:52 AM, akshayjava wrote:

> Hi Yahoos!
>
> I have a quick question regarding the del.icio.us API rate limit. Can
> someone please let me know what is the rate limit for del.icio.us API
> usage? I've hit
>
> "ERROR 999: Unable to process request at this time -- error 999"
>
> And I am not sure if this is because of some server issues or due to
> reaching the rate limit.
>
> Thanks for your help
> Akshay
>
>
>

[Non-text portions of this message have been removed]

[akshayjava]

Hi Toby

Thanks for your feedback. I am trying to collect del.icio.us tag data for a
research project as part of my dissertation.

I have a set of 30k URLs for which I would like to fetch the commonly used
tags. I am using the JSON API for this purpose.

I understand the reason for blocking too many requests from a single IP and
will space out my requests to Yahoo Servers (would 1 per 10 secs be OK?).
However, I believe that the limit might still be around 5000 requests over
24 hours. Is there any possibility to request for an increase in rate limit
for research purpose?

I would really appreciate any help in this regard.
Thanks
Akshay

On 03/03/2008, Toby Elliott <telliott@...> wrote:

>
>   Thanks for your question. This result means that you've hit the rate
> limit. I can't give you exact numbers, as it depends on your usage,
> but I will say that if you are using posts/all much at all it is
> likely to start blocking quickly.
>
> If you were hitting us fairly hard, it's a sign that you should back
> off for a while, then hit us less hard when you resume. If you
> weren't, it may be a problem with your ISP using the same connection
> for multiple users, and someone else on it abusing us, in which case
> you should notify your ISP.
>
> Regards,
> Toby Elliott
> del.icio.us
>
> On Mar 3, 2008, at 11:52 AM, akshayjava wrote:
>
> > Hi Yahoos!
> >
> > I have a quick question regarding the del.icio.us API rate limit. Can
> > someone please let me know what is the rate limit for del.icio.us API
> > usage? I've hit
> >
> > "ERROR 999: Unable to process request at this time -- error 999"
> >
> > And I am not sure if this is because of some server issues or due to
> > reaching the rate limit.
> >
> > Thanks for your help
> > Akshay
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>  
>

[Non-text portions of this message have been removed]

[Stephane Bortzmeyer]

On Mon, Mar 03, 2008 at 07:52:00PM -0000,
 akshayjava <akshayjava@...> wrote
 a message of 368 lines which said:

> I have a quick question regarding the del.icio.us API rate
> limit. Can someone please let me know what is the rate limit for
> del.icio.us API usage?

Apparently, del.icio.us does not use the Retry-After of HTTP. Wouldn't
it be a good idea?

The HTTP standard, RFC 2616, says:

14.37 Retry-After

   The Retry-After response-header field can be used with a 503 (Service
   Unavailable) response to indicate how long the service is expected to
   be unavailable to the requesting client. This field MAY also be used
   with any 3xx (Redirection) response to indicate the minimum time the
   user-agent is asked wait before issuing the redirected request. The
   value of this field can be either an HTTP-date or an integer number
   of seconds (in decimal) after the time of the response.

       Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )

   Two examples of its use are

       Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
       Retry-After: 120

   In the latter example, the delay is 2 minutes.


Currently, the response only includes:

  HTTP/1.1 503 Service Temporarily Unavailable
  Date: Wed, 05 Mar 2008 12:20:50 GMT
  Connection: close
  Content-Type: text/html; charset=iso-8859-1