Delay in broadcasting data

[rekhahindlekar]

Hi,

We are using the Atmosphere API version 1.0.12. In our setup, the Server receives data from an application, and broadcasts these data to client, that are suspended on a HTTP connection, which receives these data in real-time. This set-up has been working for the last 18 months.
2 days back, we had an issue, where the clients started getting delayed data i.e data that was broadcasted nearly 30 minutes back were received by the clients. We stopped the application which was sending the data to the server, but still the clients were receiving the data. It seemed as if the data broadcasted by Server was getting cached up and the clients were receiving the data from the cache.

We are sure that the Server broadcast was at real time, since just before the data is broadcasted, it is also stored in a container on the Server, which is then writen back to the database by a parallel thread. The container data as welll as the database data synced with the data being received by the Server from the application. Only the data received by the client was delayed.
We even started a fresh client connection and still it received the delayed data.There were no errors shown in any of the log files.

Can anyone help us out, regarding what can be the cause of this issue. The Application Server used is JBoss 7.1.1 and we have used the HeaderBroadcasterCache, specified in the web.xml as shown below :

<servlet>

     <description>AtmosphereServlet</description>   

     <servlet-name>AtmosphereServlet</servlet-name>

<servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>

    <init-param>
        <param-name>org.atmosphere.useBlocking</param-name>
        <param-value>false</param-value>
    </init-param>

    <init-param>
        <param-name>org.atmosphere.cpr.broadcasterCacheClass</param-name>
        <param-value>org.atmosphere.cache.HeaderBroadcasterCache</param-value>
    </init-param>

    <load-on-startup>0</load-on-startup>
    <async-supported>true</async-supported>

Regards,
Rekha Hindlekar

[jfarcand]

@rekhahindlekar What you are asking is professionnal service. Please visit async-io.org and buy professional services or subscriptions. This is clearly not a bug in Atmosphere, but somewhere in your system.