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I want to plug in some realtime charts in my Vaadin application. I searched through the Vaadin sampler and addons and I was not able to find any. Are there any addons that are available that can provide real time charting (something like a continuous line graph, a counter)?

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  • What do you mean by real time? You can update your chart data on server side and this then updates the chart/graph on the client. You can either use the brandnew server push with vaadin 7.1 or one of the poll-methods in previous vaadin versions.
    – André Schild
    Commented Jun 10, 2013 at 6:05
  • would push type method be scalable for real time applications (1 sec update interval)? What happens if there are lot of connections to the server
    – amrk7
    Commented Jun 10, 2013 at 6:15
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    This depends on the number of clients, bandwidth to the clients and the "size" of the changeset to be sent to clients every second.
    – André Schild
    Commented Jun 10, 2013 at 9:41
  • @amrk7 Vaadin Charts should support pushing to a surprisingly large number of chart objects and users. On YouTube, watch the Vaadin Charts Webinar 2014 to learn about the efficiencies of their architecture where Vaadin's server-side data combines with the built-in embedded JavaScript engine (Highcharts) doing all the drawing on the client-side.
    – Basil Bourque
    Commented Dec 28, 2014 at 23:16

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Vaadin Charts

Vaadin Charts is a very nice add-on to do just that, including live updating. Version 2 arrived 2014-12.

There is a free 30-day trial but after that you have to buy a license. If you're looking for something completely free, I'm afraid you have to do the integration yourself and then you could probably use most javascript charting libraries.

See this live demo of a line chart updating each second with random data. No complicated tricks involved; simply use the new Push features in Vaadin 7 to have any server-side updates to the chart data automatically pushed to the client-side.

For more info, see The Book Of Vaadin.

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  • I looked at it.. But does it provide any real time charting like a continuous line graph for eg (updates as and when the data is updated and again if it is going to be a push model would it be scalable?)
    – amrk7
    Commented Jun 10, 2013 at 6:18
  • You can add the refresher addon which the polls the server verey X ms for changes and updates the chart. vaadin.com/de/directory#addon/refresher:vaadin. Push/Pull models scalability depends on many factors, (number of clients, bandwidth, size of changesets, memory of server, etc.)
    – André Schild
    Commented Jun 10, 2013 at 9:43
  • UPDATE With Vaadin 7 and current versions of Tomcat/Jetty and such, you can use the new built-in Push features with the @Push annotation to achieve real-time updating. No longer need that refresher add-on.
    – Basil Bourque
    Commented Dec 28, 2014 at 23:03

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