Lightstreamer is a push engine for live data distribution.
It streams real-time data to an HTML browser without the need to download or install anything on the client, updating the changed data on the display without reloads. It can also enliven any thick client application with streaming data through client APIs.
While the classic AJAX approach is based on polling to retrieve new data, Lightstreamer implements a "streaming AJAX" paradigm, because the updates are pushed by the server in an asynchronous fashion.
A new StreamSense feature has been introduced for scenarios where a network infrastructure blocks any form of streaming to the client. With StreamSense each Lightstreamer Web Client can automatically detect if the streaming mode is unsupported and then switch to the Smart Polling mode. In this case (and only for those individual clients) periodic updating is used with a highly optimized AJAX-like approach.
Lightstreamer Server implements several mechanisms to optimize the data transmission on heterogeneous networks. It is possible to allocate a maximum bandwidth for each streaming channel, along with the use of Adaptive Streaming that detects any network congestion in order to dynamically throttle the data.