WebLog Expert stores analysis results in built-in cache if such setting is enabled in the profile properties. It is possible to clear the cache for specific profile in the profile properties or for all the profiles in the program options.

The analysis cache is also used to show reports by the built-in web server. If there is the "web server" report destination in the profile properties, the program caches analysis results for this profile even if the setting to cache results is disabled. However, in such case the program overwrites the cache next time the profile is analyzed.

If analysis results for a profile are cached and the program needs to generate a report for this profile, it checks the following settings:

If any of these items have changed in such a way that it could affect analysis results, all the log files are reanalyzed.

The program does not check for a version of an installed geolocation database, only for its presence. So if a newer version of the database is installed, the program will not automatically reanalyze log files. The databases can be frequently updated and this feature ensures that it is not required to analyze all the log files for all profiles all over again if a newer version of a database with minor changes is installed. However, if you wish to refresh analysis results, you can clear the cache in the profile properties or program options.

Besides settings, the program also verifies if analyzed log files have been changed to ensure that the analysis results reflect current logs.

The program can also handle several additional situations when it is possible to avoid reanalyzing all the log files. E.g. if there is data added to an uncompressed log file, the program can analyze added data only and append it to saved results.