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POWhat type of IProducerConsumerCollection<T> to use for my task?
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copied!<p>I have exactly 100 Sensors each "measuring" own data. I have exactly one <em>DataSender</em> which should send information from "sensors". The most recent information should be sent.</p> <p>Bandwidth of the channel may be less than data produced by 100 sensors. In this case some data can be skipped - but we should be "roughly fair". For example, we could skip every second measurement from each sensor.</p> <p>I don't know how often each sensor generates data, but in general they generate data pretty often.</p> <p>After my other posts:</p> <ul> <li><a href="https://stackoverflow.com/questions/5801952/how-to-create-singleton-which-always-running-in-separate-thread">how to create singleton which always running in separate thread?</a></li> <li><a href="https://stackoverflow.com/questions/5842553/modified-producer-consumer-example-any-problems-with-it">Modified Producer/Consumer example, any problems with it?</a></li> </ul> <p>I have decided that I have classical <strong>Producer/Consumer</strong> problem, with:</p> <ul> <li>100 Producers, and</li> <li>1 Consumer</li> </ul> <p>I've been suggested to use <a href="http://msdn.microsoft.com/en-us/library/dd997371.aspx" rel="nofollow noreferrer"><code>BlockingCollection</code></a> for this. The only problem with <code>BlockingCollection</code> - once you have added item, you cannot <strong>replace</strong> it. But in my application, if sensor produces a new value, and previous value was not processed by the <code>Consumer</code>, the value should be <strong>replaced</strong>.</p> <p>Should I use use a <a href="https://msdn.microsoft.com/en-us/library/dd287191(v=vs.110).aspx" rel="nofollow noreferrer"><code>ConcurentDictionary</code></a> or <a href="https://msdn.microsoft.com/en-us/library/dd381779(v=vs.110).aspx" rel="nofollow noreferrer"><code>ConcurentBag</code></a> for that task?</p> <p>Conceptually, <strong>all I need</strong> is an array of 100 elements.</p> <p>Sensor #33 should <strong>replace</strong> it's value into array[33]:</p> <pre><code>| Sensor | Value | |--------|-------| | 1 | | | 2 | | | 3 | | /......../......./ | 32 | | | 33 | 101.9 | | 34 | | /......../......./ | 98 | | | 99 | | | 100 | | </code></pre> <p><code>Consumer</code> should take value from <code>array[33]</code> and if not null, then send it and set array[33] to null. <code>Consumer</code> should react on any not null values in array asap.</p>

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