Re: Cloudant 10 requests per second limit

[Brendan Duddridge]

Hi Traun,

Looks like this is the code in question:
>
>
> https://github.com/couchbase/couchbase-lite-ios/blob/9a8903b9e851d5584abeec069ead4d2637b3bb91/Source/CBLMisc.m#L381
>

Ah excellent! I've added a check for the 429 error to tell it to return NO 
that's it's not a fatal error.

Now I just have to figure out the attachment size issue and then I'll be 
all set!

Thanks!

Brendan 

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Re: Cloudant 10 requests per second limit

[Traun Leyden]

Looks like this is the code in question:

https://github.com/couchbase/couchbase-lite-ios/blob/9a8903b9e851d5584abeec069ead4d2637b3bb91/Source/CBLMisc.m#L381



On Fri, Dec 8, 2017 at 11:40 AM, Brendan Duddridge 
wrote:

> Hi Jens,
>
>
> Sync Gateway will sometimes return a 503 if the DB server is overloaded;
>> CBL handles that by trying again a bit later. What status code does
>> Cloudant return?
>>
>
> Where in CBL does it handle the 503 error and try again? Do you think I
> could just modify the code to also do the same thing with a 429 error?
>
> Thanks,
>
> Brendan
>
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Re: Cloudant 10 requests per second limit

[Brendan Duddridge]

Hi Jens,


Sync Gateway will sometimes return a 503 if the DB server is overloaded; 
> CBL handles that by trying again a bit later. What status code does 
> Cloudant return?
>

Where in CBL does it handle the 503 error and try again? Do you think I 
could just modify the code to also do the same thing with a 429 error?

Thanks,

Brendan 

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Re: Cloudant 10 requests per second limit

[Brendan Duddridge]

> Sync Gateway will sometimes return a 503 if the DB server is overloaded; 
> CBL handles that by trying again a bit later. What status code does 
> Cloudant return?
>
>
It looks like it's a 429 -- too many requests error. 

https://console.bluemix.net/docs/services/Cloudant/api/http.html#http

and from the RFC standard:

https://tools.ietf.org/html/rfc6585#page-3


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Re: Cloudant 10 requests per second limit

[Jens Alfke]

> On Dec 5, 2017, at 3:14 PM, Brendan Duddridge  wrote:
> 
> Ya, I didn't think it ran any queries. But it would be good if it could 
> handle the response code and then try again in a little bit.


Sync Gateway will sometimes return a 503 if the DB server is overloaded; CBL 
handles that by trying again a bit later. What status code does Cloudant return?

—Jens

Jens Alfke — Mobile Architect — Couchbase, Inc.

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Re: Cloudant 10 requests per second limit

[Brendan Duddridge]

Ya, I didn't think it ran any queries. But it would be good if it could 
handle the response code and then try again in a little bit.

On Tuesday, December 5, 2017 at 3:48:17 PM UTC-7, Jens Alfke wrote:
>
>
> No, there’s nothing like that, because it’s never been an issue before. 
> (FWIW, the replicator does not run any view queries.) 
>
>

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Re: Cloudant 10 requests per second limit

[Jens Alfke]

> On Dec 5, 2017, at 12:55 PM, Brendan Duddridge  wrote:
> 
> I was wondering if there was anything in Couchbase Lite 1.4 which could 
> throttle the number of lookups per second, writes per second and queries per 
> second during a replication process.

No, there’s nothing like that, because it’s never been an issue before.
(FWIW, the replicator does not run any view queries.)

—Jens

Jens Alfke — Mobile Architect — Couchbase, Inc.

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Re: Cloudant 10 requests per second limit

[Brendan Duddridge]

Yes, that is a limitation with the free tier. But their older Cloudant 
service didn't have this limitation and I had a lot of customers using it. 
So now I'm starting to field all these support requests. Just trying to 
figure out what to do now and how to handle it.

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Re: Cloudant 10 requests per second limit

[Traun Leyden]

I think those limitations only apply to the free tier of IBM Cloud.

I don't know of any throttling mechanisms in Couchbase Lite along those
lines though.

On Tue, Dec 5, 2017 at 12:55 PM, Brendan Duddridge 
wrote:

> Hi,
>
> IBM has changed their system so that it only allows for a limited number
> of requests per second:
>
>
>- 20 Lookups/sec
>- 10 Writes/sec
>- 5 Queries/sec
>
>
> I was wondering if there was anything in Couchbase Lite 1.4 which could
> throttle the number of lookups per second, writes per second and queries
> per second during a replication process.
>
> Or if the too many requests response occurred, that Couchbase Lite could
> back off and try again a second or two later.
>
> IBM is apparently doing everything they can to make things difficult.
> First the attachments issue, now this. I'm getting a lot of support
> requests from my customers about these issues.
>
> Thanks,
>
> Brendan
>
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Cloudant 10 requests per second limit

[Brendan Duddridge]

Hi,

IBM has changed their system so that it only allows for a limited number of 
requests per second:


   - 20 Lookups/sec
   - 10 Writes/sec
   - 5 Queries/sec


I was wondering if there was anything in Couchbase Lite 1.4 which could 
throttle the number of lookups per second, writes per second and queries 
per second during a replication process.

Or if the too many requests response occurred, that Couchbase Lite could 
back off and try again a second or two later.

IBM is apparently doing everything they can to make things difficult. First 
the attachments issue, now this. I'm getting a lot of support requests from 
my customers about these issues.

Thanks,

Brendan

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