[OpenSIPS-News] [NEW] Enhancements of Ratelimit Module

Razvan Crainea razvancrainea at opensips.org
Tue Nov 1 12:49:50 CET 2011

Hi all,

The new version of "ratelimit" module on 1.8.0 (trunk) comes with a set 
of major enhancements:

1) Dynamic and flexible pipes

The new version of ratelimit module allows you to create an unlimited 
number of pipes and even more, in a dynamic way at runtime (versus the 
old version where the number of pipes was limited to 16 and they had to 
be statically defined).
This is very helpful when you want to do rate-limiting on a per 
subscriber-base, on a per trunk-base, etc. ; you can create on the fly 
pipes for each subscriber / trunk / gw, etc, without the need of 
pre-defining them.

2) Distributed across multi opensips instances

A major enhancement for this new module is the distributed support for 
rate limiting. Until now, the scope of a pipe was limited to a single 
OpenSIPS instance. This is a problem when you need to perform rate 
limiting for an entire platform. The new ratelimit module has been 
integrated with the CacheDB interface (with redis, memcache support) in 
order to provide distributed pipes, that are visible in all the 
platform. Hence the limitation will no longer be applied for a single 
instance, but for the entire platform as a whole.
Such feature is useful if you have multiple opensips instancing acting 
as a single platform (like a cluster of load-balancers or dispatchers , 
or active-active setups, or multi-SBCs, etc)

You can find documentation about the new module at: 

Best regards,

Răzvan Crainea
OpenSIPS Developer

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