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PONetty Server Push Usage and Memory Leak
 

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    <p>I'm now using Android as my Netty client. And Windows as my Netty Server. Recently, I find a strange behavior on Netty. When I open the server-side app, the memory is only 30MB. But after several hours, it rises up to 300M. Its 10x compared to the original memory usage. The longer I open the server, the more memory it will increase.</p> <p>I don't know why this is happening. Is it normal?</p> <p>By the way, since Netty doesn't support built-in server push feature. So I use a static method to store all of the Channel in the map:</p> <pre><code>public static final Map&lt;Integer, Channel&gt; mapConcurrentIdChannel = new ConcurrentHashMap&lt;Integer, Channel&gt;(); </code></pre> <p>I map the channel ID to Channel. For example: Whenever client A wants to push message to client B, the server will find the channel id and thus get the Channel instance, then use Channel.write(object) method. Is this a correct method to implement Push Message feature in Netty? (If not, could you please suggest a good method to implement Push feature? Since there's no official docs mention that) Also, I'm afraid this implementation causes "Memory Leak Problem" which I explain earlier.</p> <p><strong>About using ChannelGroup:</strong><br /> My scenario is if there are 5 people, A, B, C, D, E. Sometimes, A wants to send message to C, and sometimes B wants to send message to E. I can't predict when somebody will send message to somebody and who they will send to. So I can't add all the 5 people(connection) to the ChannelGroup, which writing to that group would broadcast the message to everyone.</p> <p>I've searched on Google for a long time and nothing help on my problem I'm now facing. Wish to hear some recommendations from Netty experienced developers, you!!</p> <p>Thanks!!</p>
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