Hi Andre, I can tell you are really busy and so I really hate to keep bugging you….
A friend who's a more advanced programmer than me has indicated that it's difficult (outside of true multi-threading) for one process to get access (even read-only) to the memory of another process. So where I'm still lost is that I don't understand how Copas, Xavante, FastCGI or any other technology is able to read (in parallel) a Lua table that exists in my dedicated persistent Lua memory process. Please forgive my attempt at clarification if you feel you have already addressed that point, but I just wanted to confirm that we're on the same page before I do a deep dive to explore the products you have pointed me to. If you can confirm that either Copas or Xavante would (with customization) be able to gain parallel, read-only access to this huge, in-process Lua table, then I'll dig into those products and figure out the details to make my shortest-path code run against just one memory instance of this data. I'm not a low level programmer so perhaps it's easy stuff and I just don't realize how easy it is? Thanks very much for pointing me in the right direction. Regards, Dewey On Mar 7, 2010, at 2:41 PM, Dewey Gaedcke wrote: > Andres, > Thanks for the clarification and no worries on the missing "not". > > I actually confused you by using "CGI" in a very generic sense meaning simply > that a web server would get a request and then run short-path dive on these > large Lua tables. > > Remember that my Lua table (Graph) is huge, persistent, and being updated > constantly > .in fact it's a batch process that runs forever > . > > So where I'm still lost is that I don't understand how Copas, Xavante, > FastCGI or any other technology is able to read (in parallel) a Lua table > that exists in my dedicated Lua memory process. > > Please forgive my attempt at clarification if you are already clear those > points but I just wanted to confirm that we're on the same page before I did > a deep dive on the products you have pointed me to. > > If you can confirm that either Copas or Xavante would (with customization) be > able to gain read-only access to this in-process Lua table, then I'll dig > into those products and figure out the details to make my short-path code run > from there. > > I'm not a low level programmer so perhaps this is easy stuff and I just don't > realize how easy it is? > > Thanks again. > Dewey > > > > On Mar 7, 2010, at 1:22 PM, Andre Carregal wrote: > >> My advice would be to use a persistent process like FastCGI, but if >> you end up needing to use CGI, the deamon could be written in Lua if >> you wanted. It would be basically a socket listening server that would >> accept requests, eval the short path using the in memory data >> structure you have, and reply with the appropriate response. >> >> In that direction, you may check Copas to see if it would work for >> you, or use Xavante as a web server with persistent states and use >> HTTP as the protocol for your requests (for example in JSON or simply >> a serialized Lua table). > _______________________________________________ Kepler-Project mailing list Kepler-Project@lists.luaforge.net http://lists.luaforge.net/cgi-bin/mailman/listinfo/kepler-project http://www.keplerproject.org/
