multiplexing

I'm in process of implementation of a fastcgi application, after reading fastCGI spec I've found a feature called "request multiplexing". It reminded me Adobe RTMP multiplexing back in the days that protocol was proprietary and closed. As far as I understand, multiplexing allows to reduce overhead of creating new connections to FCGI clients effectively interweaving requests chunks, and at the same time enabling "keep-alive" model to connection. Latter allows sending several requests over a single connection. First question is did I get it right? Next one is - after some googling I've found

I am reading Redis recently. Redis implements a simple event-driven library based on I/O multiplexing. Redis says it would choose the best multiplexing supported by the system, and gives the following code: /* Include the best multiplexing layer supported by this system. * The following should be ordered by performances, descending. */ #ifdef HAVE_EVPORT #include "ae_evport.c" #else #ifdef HAVE_EPOLL #include "ae_epoll.c" #else #ifdef HAVE_KQUEUE #include "ae_kqueue.c" #else #include "ae_select.c" #endif #endif #endif I wanna know whether they have fundamental performance differences? If so,

How can I go about "selecting" on multiple queue.Queue 's simultaneously? Golang has the desired feature with its channels: select { case i1 = <-c1: print("received ", i1, " from c1\n") case c2 <- i2: print("sent ", i2, " to c2\n") case i3, ok := (<-c3): // same as: i3, ok := <-c3 if ok { print("received ", i3, " from c3\n") } else { print("c3 is closed\n") } default: print("no communication\n") } Wherein the first channel to unblock executes the corresponding block. How would I achieve this in Python? Update0 Per the link given in tux21b's answer , the desired queue type has the following

I'm learning pubnub and I read their documentation but I just can't find how to manage a multi room chat box. By default, a channel can be listened by anyone. Subscribing to it and publishing on it is easy. What I want is to have a main public room (so far so good) but anyone should also be able to talk privately to anyone else without the risk of being read by other users. These dynamic rooms would be tabbed and the user should be able to go from one to another. Another requirement would be that talking privately to someone doesn't kick you out of the other rooms you subscribed to (you can

Hi I'm creating a proxyserver that wait for packets from client with an UDP connection and checks if all of them are effectively arrived or same of them have been rejected . In that case I should send an "ack" to the clients for each lost packet (with send_ack() ) but just after have sent the first ack the "if part" of the select loops sending unlimited acks never going back to the "else part" were the select listen data from client (receive _pkt() function ) fd_set rset, allset; int maxfd, nready; struct timeval timeout; timeout.tv_sec = 4; timeout.tv_usec = 150000; maxfd = socketfd; FD_ZERO(

Server code: TMultiplexedProcessor processor = new TMultiplexedProcessor(); processor.registerProcessor( "AddService", new AddService.Processor(new AddHandler())); processor.registerProcessor( "MultiplyService", new MultiplyService.Processor(new MultiplyHandler())); TServerTransport serverTransport = new TServerSocket(7911); TSimpleServer server = new TSimpleServer(new TSimpleServer.Args(serverTransport). processor(processor)); System.out.println("Starting server on port 7911 ..."); server.serve(); Client Code: TFramedTransport transport; transport = new TFramedTransport(new TSocket("localhost

We have many React Native <Image> components rendering per screen and are witnessing performance issues due to many simultaneous http requests . Opening and closing a connection is expensive, and having too many simultaneous connections can hit limitations that cause timeouts. HTTP/2 features multiplexing , allowing multiple requests and response messages between the client and server to be in flight at the same time over a single connection, instead of multiple connections, which improves page load times. CloudFront supports HTTP/2, HTTP/1.1, and HTTP/1 by default depending on the version the

I am building a webapp and serving it over http2. However when I analyze network in Google Chrome (Version 59.0.3071.115 (Official Build) (64-bit))'s developers tools, it is clear that multiplexing does not work as there are only 6 active connections (like with http1.1) and the rest of connections are queued. Why is this? Or are my expectations not correct? The screenshot (you can see that protocol is http2): Update #1: The backend runs on nginx 1.13; I am using custom modules loader which loads all the scripts at once (by creating script tag with async attribute in a loop); The screenshot