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Questions tagged [messaging]

Messaging refers to the design pattern whereby discrete messages are used for communication between objects or processes. Messages can be simple data, complex data structures, or even code. This pattern is often used for asynchronous or parallel computing.

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Are PeopleSoft Integration Broker asynchronous messages fired serially on the receiving end?

I have a strange problem on a PeopleSoft application. It appears that integration broker messages are being processed out of order. There is another possibility, and that is that the commit is being fired asynchronously, allowing the…
Grant Johnson
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How to synchronize messages stored in a database, but processed by multiple services

I am wondering how to create my own SOA style messaging system, similar to JMS (Java Messaging System). The MOM (Messaging Oriented Middleware) needs to store messages in a single database, but may be processed by more than one service for…
NickV
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How to use Django messaging to alert other users?

I've got some nifty code that on user login, finds any other user logged in as that user and logs them out. It works just fine, but it doesn't offer any indication as to why these people are no longer logged in, so I'm trying to remedy that with…
Daniel Quinn
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using ONLY ActiveMQ get file from network folder to queue

Our organization is moving towards a new case management system. One of the functions that it has is the ability to publish XML files when certain conditions are met. I have that portion all set up and I get an XML document in a network…
Leslie
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high performance non blocking ordered message handler

I have some high-concurrent message handler receiving ordered messages and now need to handle wrong ordered messages: if forward message arrive it should notify and if stale message arrive - it should ignore it. Example: if 1,2,3,5 messages arrived…
yetanothercoder
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SQL - need a query to search messages by recipient

I have a simple message schema where a "thread" ties 2 or more users to a stream of messages. Each message belongs to a single thread. It works just like SMS messages, or Facebook messages. Given a string (representing a name or partial name of a…
Redtopia
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SQL - need a query to get most recent message in each thread that a user is part of

In my app, a "message thread" is defined as all messages between two or more users, and is not nested. It needs to work like Facebook messages. I need a query that generates a list of all "message threads" in which a user is a member, sorted by…
Redtopia
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SQL - message schema - need to find an existing message thread given a set of users

I'm designing a simple messaging schema where a thread groups all messages that are sent between a collection of users. I'm getting stuck when I have to find an existing thread given a set of users. There are 2 scenarios for sending a message: Send…
Redtopia
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Repeat windows messages in Winforms

I want repeat sent windows messages to my winforms application. Now, I have class implementing "IMessageFilter" which saves the selected messages (WM _KEYDOWN, WM _LBUTTONDOWN, etc...) to the list. On key "Pause/Break" I copy the list of messages,…
TcKs
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Apache ActiveMQ Server-to-Server connection

Our company now uses Websphere MQ to facilitate communication with our business partners, but we're evaluating migration to ActiveMQ. I've read some documentation and articles and haven't found particular option we need - server-to-server…
Czar
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MVVM Light - Unable to update parent view from child - nested edit

My situation is slightly different than from other posts and I was not able to solve it with the other trhreads. So that why I ask. I have a class that is obtained from deserializing an XML like: …
Massimo Savazzi
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Apache Qpid/Redhat MRG - Send dates in a portable way across different systems

Apache qpid does not has a direct support for sending Date type objects. I want to send datetime fetched from Database and Date objects using Apache Qpid in way that is portable across different systems i.e. systems using C++/Java or any other…
MoveFast
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Which of the following data duplication options across shards is recommended?

High performance mysql book suggests that for sharding a blog application, one may want to put comments data across 2 shards: first, on the shard of a person posting comment, and on the shard where the post is stored. So this raises the question…
jeff musk
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Apache Qpid - Set routing key at message level

Is there any option to set a routing key at message level in Apache Qpid. The way I currently do is Specify routing key in address string. Create a producer with this destination address. topic = (Topic) context.lookup("destination"); sender =…
MoveFast
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Ajax based personal messaging system in PHP

I am trying to build a MySQL, PHP, Ajax based personal messaging system. There is one table for all messages - msghistory, which looks like that And another one for users' last message check date records - chkdate. The system works like this:…
Tural Ali
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