Check methods.
This section briefly describes various methods used to determine whether the
monitored resource has changed.
- "Resource Size/Date/Time comparing"
- this check method consists in checking the resource headers/listing information.
When checking the link the program compares the current and the previously
saved values. This is the fastest and the least bandwidth consuming method,
but it isn't effective with dynamically generated HTML documents. This
method is recommended for checking binary files and static documents.
- "Exact content analysis" - this check method
consists in comparing the resource content with its previously saved copy. This is the slowest
and the most bandwidth consuming method, but the most precise one. This method is recommended
for monitoring dynamically generated documents. Warning
: do not use this method for checking large binary files (executable
files, archives and so on), because the program may take all yours PC
resources!
- "Smart content analysis" - this check method
consists in monitoring a specific part of the resource (see Using
Smart content analysis). The program compares the extracted
fragment to the previously saved copy. The method is rather slow and
bandwidth consuming, but it lets you track the specific part of the resource
(the one you are interested in).
This method is recommended for tracking the latest news, stock data,
exchange rates, weather etc.
See also: Using Smart content analysis .