Krishnakant Mane wrote: > hello all, > I am working on a free software for accounting and rural banking in India. > We use Pylons for web application. > Now, my question is in reference to the recent threads on this mailing > list regarding sqlalchemy connections. > I heard that after a certain amount of connections, the library does > have some problems managing them. > I have looked at some emails but I would like if some one demystifies my > understanding or misunderstanding. > My application is based on MVC Architecture and the core logic is coded > as XMLRPC based server side APIs. > We create a connection for every new client which connects to the rpc > server and maintain all the connections in a list. > now I forsee a situation where more than 500 connections might be alive > at one time in the list. > I understand that sqlalchemy has some limitations on the number of > connections (engines ) and their respective session objects which can be > kept alive at the same time? > if this is true, can i create some kind of a connection pool for the > server? > This way connections can be recycled and used for a lot of clients and > new connections will only be created when needed. > I want to avoide this situation, so I really want to know if there is > some kind of upper limit on the number of engines that can be active at > one time.
The connection pool can be configured to allow any number of connections you'd like using the options described at http://www.sqlalchemy.org/docs/reference/sqlalchemy/connections.html#creating-engines , or if you are using a Pool directly see the docs at http://www.sqlalchemy.org/docs/reference/sqlalchemy/pooling.html#sqlalchemy.pool.QueuePool . Keep in mind that 500 connections will require a very large amount of memory on the client machine. Hope this helps. > > Happy hacking. > Krishnakant. > > > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalch...@googlegroups.com. > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
