[SR-Users] pipelimit with a kamailio cluster

[Daniel Donoghue]

Hi Daniel,

Thanks for your quick reply.

What kind of rates would you consider high and low?

We are processing an average of 300,000 invites per day

Blessings,
—
Daniel




> On 16 Feb 2021, at 09:10, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
> 
> Hello,
> 
> pipelimit works only with a single instance, everything in memory, it
> does not have any storage or replication. It targets to catch high
> rates, like thousands of requests per seconds, in such case doing the
> replication will add delays, so the measurement won't be accurate across
> many nodes anyhow.
> 
> If you deal with lower rates, then you can use htable module, which has
> dmq replication. You can define a hash table with the expire interval
> you need for rates, then you have functions/variables to count number of
> items in the hash table. Probably something like this can be implemented
> with a redis server as well.
> 
> Otherwise, there is no hard limit of number of pipes for pipelimit.
> 
> Cheers,
> Daniel
> 
> On 16.02.21 08:38, Daniel Donoghue wrote:
>> Hello,
>> 
>> I have 2 stateful kamailio servers that receive incoming requests, load balanced across the 2 servers by our carrier trunk partners (outside of our control).
>> 
>> I am looking at putting certain invites from these trunks into pipelimit to rate limit under some conditions but I have some questions:
>> 
>> 1. How will pipelimit establish rates when requests can come in to either of my servers? 
>> 
>> 2. If pipelimit decides it is time to limit the requests, will both servers respect that limit?
>> 
>> 3. does pipelimit rely on a db or can it use dmq, redis or other methods for cross-server communication?
>> 
>> 4. Is there a maximum number of pipes that can be defined?
>> 
>> 
>> Hope somebody can help me answer these questions.
>> 
>> 
>> With every blessing,
>> —
>> Daniel Donoghue
>> 
>> 
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> 
> -- 
> Daniel-Constantin Mierla -- www.asipto.com
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> Funding: https://www.paypal.me/dcmierla
>