On Thu, 2008-04-03 at 22:22 -0700, Sujith Joseph wrote: > Hi, > I am trying to implement a way of throttling http connections to a web > server from a web service, using httpclient, so that the web server wouldn't > be overloaded with more than 'x' concurrent connections, from my web > service. (I also need to ensure that the http connections available in the > pool are utilized efficiently). > > Within the web service, the http connections are created for various types > of (client) applications and each such application has a preferred limit on > the number of concurrent connections, it can create to the server. However > if the connections requested by a particular application gets higher than > its preferred limit, it could consume free http connections allocated to > other applications. The thus eagerly acquired connections must be released, > if the rest of the applications requests back for their allotted > connections. > > > To implement this, I am thinking of using a custom object pool of > SimpleHttpConnectionManager objects for each of the applications and have a > logic to maintain and regulate the number of these objects allocated/used, > based on the load, during new connection requests. For each web server > request, the plan is to create a connection from the > SimpleHttpConnectionManager using a HttpClient and release it, after getting > a response. >
Sujith, SimpleHttpConnectionManager holds only one connection object. There is no benefit in pooling SCM instances. You can as well maintain a pool of HTTP connections. > Can someone help me with a better solution for this? I know that the > MultiTHreadedConnectionManager keeps a pool of connections, but I am not > sure, whether we can dynamically manipulate the max connections to a host, > after an MTCM object creation (My understanding on MTCM is that it creates > as many threads as the max connection limit on its creation). Is there > something in Httpclient4.x that might help me in this? HttpClient 4.x API is much, much more modular and flexible. You'll need to write a lot less custom code. > I am also thinking of > a custom implementation of the HttpConnectionManager for this. Please > advise. > I do not see a way around writing a custom connection manager, which is not an easy task. Oleg > > Thanks, > Sujith --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
