Real-time processing means processing data as it is created or modified. This is in contrast to batch processing, wherein data is processed in large chunks at a specific interval (e.g. every night).

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How to handle shutdown/startup of a Java application that relies on real time events?

I have this Java project called Server. Server is essentially a single-threaded application that listens to events from external applications. These events are crucial and missing one is a huge deal. ...
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105 views

Spreading incoming batched data into a real-time stream

I would like to display some events in 'real-time'. However, I must fetch the data from another source. I can request the last X minutes, though the source is updated approximately every 5 minutes. ...
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Realtime layered time data storage and calculations

I am having a hard time trying to figure out the best way to report on and calculate layered time data. The problem: A person can sign in multiple times, during this sign in there are multiple ...
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501 views

Cross-compiling Java app to run directly on ARM

Please note: although I am using ARM SAM3X8E in this example, I'm just using that as a concrete example, and the answer to this question could easily be given using any other MCU such as AVR, etc. I ...
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How to specify OCL time constraints?

The article An OCL Extension for Real-Time Constraints describes and interesting extension to OCL for the specification of time constraints. New types OclConfiguration and OclPath are defined along ...
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Integrate C++ DLL with C# GUI asynchronously (design issue)

This is more a design than an implementation question. I am aware of how to integrate a C++ DLL within a C# main app that acts as GUI. Believe me that I've read all other questions on similar topics, ...
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Semaphore : one for each shared resource?

Normally semaphores are implemented as integer variables. The value of a semaphore represents initially the number of processes that are allowed to access the shared resource at the same time, which ...
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442 views

Multiple long polling requests: bad idea?

I am designing a web server that handles multiple things such as a user-to-user chat, a user-to-group chat, friends request, forum etc. The chats have to be real-time chats, the friends requests ...
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441 views

Atmosphere + Long Polling : No message distribution?

I'm experiencing a strange behavior with Atmosphere + Long Polling. I'd like to have a broadcaster per user, so I have registered a broadcaster on resource suspension with id : /user/. I use ...
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156 views

SignalR UI updates and group managing

I'm working on a web application and I have 2 specific questions regarding SignalR I need give the UI real-time updates (both broadcast to everybody on the hub, but also just to the original caller) ...
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Adding a chat api to infrastructure

I currently have a REST Api and will be adding a new real time chat feature. I want the applications to have a separation of concerns. I initially was planning on adding a new realtime messaging ...
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Correct definition of “bandwidth preserving algorithms” in real-time scheduling?

I've seen conflicting definitions for the term "bandwidth preserving algorithms". The two definitions I've seen are: Any spare CPU capacity is used for aperiodic processes. One or more periodic ...