[OSM-dev] Ruby developers in Amsterdam

[Grant Slater]

Martijn van Exel wrote:
> Is there another source explaining the architecture of the Rails port? Preferably with a  
> diagram or such.
>   

Hardware wise...
    1x Database Server (MySQL)
    3x Dedicated Rails Application Servers (Ruby 1.8.6, Rails 2.0.x)
    1x Frontend Web Server (lighttpd + Ruby 1.8.6, Rails 2.0.x)

Dynamic requests are broken down into 4 types:
    Web: Website, Login, Signup, Messages etc (Handled by frontend web)
    TAH: All Tiles at Home requests
    BulkAPI: API map, trackpoint, amf/reads and swf/trackpoints
    API: New nodes, rest of API stuff
See: http://svn.openstreetmap.org/sites/rails_port/config/lighttpd.conf

There have been problems in the past with Rail's libxml binding leaking 
memory. Rails seams to leak memory on some of the BulkAPI and 
occasionally API requests. Particularly /api/0.5/map
API code has a forced Rails daemons death after ~10000 requests to free 
leaked memory.

/ Grant