message-queue

How many messages does the queue for a standard window hold? What happens when the queue overflows? The documentation for GetMessage and relatives doesn't say anything about this, and PeekMessage only gives you a yes/no for certain classes of messages, not a message count. This page says that the queues are implemented using memory-mapped files, and that there is no message count limit, but that page is about WinCE. Does this apply to desktop Win32 as well? Corey Trager 10000 by default, but it can be adjusted via the registry. If queue overflows, PostMessage fails. Documentation here:

I have a Java App and a NodeJS App both using a single Azure Service Bus Message Queue. I witness some strange effects with my clients, as follow. JAVA MESSAGE PRODUCER (using QPID libraries per Azure JMS tutorial): TextMessage message = sendSession.createTextMessage(); message.setText("Test AMQP message from JMS"); long randomMessageID = randomGenerator.nextLong() >>>1; message.setJMSMessageID("ID:" + randomMessageID); sender.send(message); System.out.println("Sent message with JMSMessageID = " + message.getJMSMessageID()); OUTPUT: Sent message with JMSMessageID = ID:2414932965987073843

The first Activity that loads in my application is an initialization activity, and once complete it loads a new Activity. I want to ensure if the user presses 'Back' they go straight to the Launcher, and not the initialization screen. Side note, is this even the best approach, or would this be better done with some kind of Intent Flag? Is it correct to call finish() after calling startActivity() on the new activity? onCreate() { ... startActivity(new Intent(this, NextActivity.class)); finish(); ... } I'm still taking in the whole 'Message Queue' method of doing things in Android, and my

I want to know how many maximum queues RabbitMQ can handle on a single server? Does it depend on RAM? Does it depends on erlang processes? pinepain There are not any hard-coded limits inside RabbitMQ broker. The broker will utilize all available resources (unless you set limits on some of them, they are called watermarks in RabbitMQ terminology). There are some limitations put by Erlang itself, like maximum number of concurrent processes, but if you theoretically can reach them on single node then it is always good idea to use distributed features . There are a lot of discussions about

What messages could be stored in RabbitMQ queues? Only strings? Or can I select what type I want to store: int, binary, string etc.? What is the max size of one message? How many queues or exchanges could be created? Or does it depend on the server's power? robthewolf Theoretically anything can be stored/sent as a message. You actually don't want to store anything on the queues. The system works most efficiently if the queues are empty most of the time. You can send anything you want to the queue with two preconditions: The thing you are sending can be converted to and from a bytestring The

Looking to use a message queue in a small web app I'm building with node.js. I looked at resque but not sure that's appropriate. The goal is to push notifications to clients based on backend and other client actions with socketio. I could do this with just socketio but I thought maybe a proper message queue would make this cleaner and I wouldn't have to reinvent the wheel. What are the options out there? Alfred you could use redis with the lightning fast node_redis client. It even has built-in pubsub semantics. You could use the node STOMP client . This would let you integrate with a variety