A computer-implemented method, comprising: receiving and storing, by a computer device, messages of one or more browsing sessions of a website in a first database; determining, by the computer device, whether one of the one or more browsing sessions is terminated; upon determining the one browsing session being terminated, fetching, by the computer device, the messages of the terminated browsing session; determining, by the computer device, one or more tags based at least on the messages of the terminated browsing session; and storing, by the computer device, the terminated browsing session with the one or more tags into a second database for data analysis.