Table of Contents
List of Tables
List of Examples
This module is an implementation of a cache system designed to work with a memcached server. It uses libmemcached client library to connect to several memcached servers that store data. It uses the Key-Value interface exported from the core.
memory costs are no longer on the server
many servers may be used so the memory is virtually unlimited
the cache is persistent so a restart of the server will not affect the cache
memcached is an open-source project so it can be used to exchange data with various other applications
servers may be grouped together (e.g. for security purposes : some can be inside a private network, some can be in a public one)
The following libraries or applications must be installed before running OpenSIPS with this module loaded:
libmemcached:
libmemcached can be downloaded from: http://tangent.org/552/libmemcached.html. Download the archive, extract sources, run ./configure, make,sudo make install.
...
wget http://download.tangent.org/libmemcached-0.31.tar.gz
tar -xzvf libmemcached-0.31.tar.gz
cd libmemcached-0.31
./configure
make
sudo make install
...
The urls of the server groups that OpenSIPS will connect to in order to use the from script cache_store,cache_fetch, etc operations. It can be set more than one time. The prefix part of the URL will be the identifier that will be used from the script.
Example 1.1. Set cachedb_url parameter
...
modparam("cachedb_memcached", "cachedb_url","memcached:group1://localhost:9999,127.0.0.1/");
modparam("cachedb_memcached", "cachedb_url","memcached:y://random_url:8888/");
...
Example 1.2. Use memcached servers
...
cache_store("memcached:group1","key","$ru value");
cache_fetch("memcached:y","key",$avp(10));
cache_remove("memcached:group1","key");
...
Table 2.1. Top contributors by DevScore(1), authored commits(2) and lines added/removed(3)
| Name | DevScore | Commits | Lines ++ | Lines -- | |
|---|---|---|---|---|---|
| 1. | Vlad Paiu (@vladpaiu) | 23 | 13 | 859 | 63 |
| 2. | Razvan Crainea (@razvancrainea) | 12 | 10 | 28 | 16 |
| 3. | Liviu Chircu (@liviuchircu) | 12 | 9 | 71 | 91 |
| 4. | Bogdan-Andrei Iancu (@bogdan-iancu) | 7 | 5 | 5 | 7 |
| 5. | Maksym Sobolyev (@sobomax) | 4 | 2 | 3 | 3 |
| 6. | Julián Moreno Patiño | 3 | 1 | 1 | 1 |
| 7. | Peter Lemenkov (@lemenkov) | 3 | 1 | 1 | 1 |
| 8. | Vlad Patrascu (@rvlad-patrascu) | 2 | 1 | 1 | 0 |
(1) DevScore = author_commits + author_lines_added / (project_lines_added / project_commits) + author_lines_deleted / (project_lines_deleted / project_commits)
(2) including any documentation-related commits, excluding merge commits. Regarding imported patches/code, we do our best to count the work on behalf of the proper owner, as per the "fix_authors" and "mod_renames" arrays in opensips/doc/build-contrib.sh. If you identify any patches/commits which do not get properly attributed to you, please submit a pull request which extends "fix_authors" and/or "mod_renames".
(3) ignoring whitespace edits, renamed files and auto-generated files
Table 2.2. Most recently active contributors(1) to this module
| Name | Commit Activity | |
|---|---|---|
| 1. | Maksym Sobolyev (@sobomax) | Feb 2023 - Feb 2023 |
| 2. | Bogdan-Andrei Iancu (@bogdan-iancu) | Jan 2013 - Mar 2020 |
| 3. | Razvan Crainea (@razvancrainea) | Aug 2015 - Sep 2019 |
| 4. | Liviu Chircu (@liviuchircu) | Mar 2014 - Apr 2019 |
| 5. | Peter Lemenkov (@lemenkov) | Jun 2018 - Jun 2018 |
| 6. | Vlad Patrascu (@rvlad-patrascu) | May 2017 - May 2017 |
| 7. | Julián Moreno Patiño | Feb 2016 - Feb 2016 |
| 8. | Vlad Paiu (@vladpaiu) | Oct 2011 - May 2014 |
(1) including any documentation-related commits, excluding merge commits
Last edited by: Peter Lemenkov (@lemenkov), Liviu Chircu (@liviuchircu), Julián Moreno Patiño, Vlad Paiu (@vladpaiu), Bogdan-Andrei Iancu (@bogdan-iancu).
Documentation Copyrights:
Copyright © 2009 Andrei Dragus
Copyright © 2009 Voice Sistem SRL