[Freeswitch-users] which language to implement dial plans in?

[Steven Ayre]

C is faster, but it's probably not worth it unless you can show that there's
enough processing being done by your script that it'd have an impact. It's
slightly more work to tweak it than just editing a script since you'd need
to recompile and reload the module, which might also be trickier if you're
handling traffic at the time.

Lua (mod_lua) is probably the most commonly used language, but there's also
Python (mod_python) as you've spotted. There's also JavaScript
(mod_spidermonkey) which you haven't mentioned. Which you use is really up
to you though.

As far as database access goes, from Lua check out:
http://wiki.freeswitch.org/wiki/Lua_freeswitch_dbh

It gives you a database interface without having to install and configure
luasql, and you get to take advantage of the FS connection pooling which you
wouldn't if you were using the native support. That'll should speed up
database access times (you'll in most cases already be connected to the
database so the call doesn't have to wait while you connect). I don't think
that interface is available in the other languages just yet though.

-Steve


On 18 February 2011 06:17, Edward de Jong <edward.dejong at voicecarrier.com>wrote:

> I am new to freeswitch, and wondering which of the many languages to
> implement my rather complex dial plan in. I know i can't express my desires
> in the normal XML language, because I need looping and database access, so
> which language is the best tested and most reliable in terms of usage with
> FreeSwitch. My finalists so far are Lua, Python, and good old C. Haven't
> used python or lua yet, but I figure C will have a big performance
> advantage.
>
> but maybe not important considering how much greater the CPU load in the
> switch is devoted to handling audio streams...
>
> edj
>
>
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