[NEW] Memory Cache (memche) support in OpenSIPS 1.5.0

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[NEW] Memory Cache (memche) support in OpenSIPS 1.5.0

Anca Vamanu-2
Hello,

As part of a large effort to reduce the negative impact of the DB
queries in the OpenSIPS performance, OpenSIPS 1.5.0 has now support for
Memory Cache (memcache). As said, this is just a part of the effort of
optimizing the DB interfacing (part of this work is the upcoming support
for prepared statements in DB queries).

The Memory Caching support from OpenSIPS wants to provide a way of
caching at runtime different kind of data. These data will globally
available (anywhere in the routing script) and shared between all
OpenSIPS processes.

The idea is to be able to store (cache) custom values for later usage.
The main purpose of this MemCache support is to reduce the number of DB
queries by caching data that does not need constant update from DB. DB
queries are known to be one of bottle necks in the current design (see
design considerations -
http://www.opensips.org/index.php?n=Development.NewDesign) and MemCache
support will help in avoiding unnecessary DB hits.

To find out more about the design, implementation and usage examples for
Memory Caching, see MemCache Tutorial from the web site:
   http://www.opensips.org/index.php?n=Resources.DocsTutMemcache

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