Maintenance

Optimize database room
After numerous delete or update operations on Dotclear's database tables, these get fragmented. Optimizing will perform an OPTIMIZE TABLE request on all tables.
It has no incidence on your data's integrity.
It is recommended to optimize before any blog export.
Counters
Initializing comments and trackbacks counters allows to check their exact numbers. This operation can be useful when importing from another blog platform (or when migrating from dotclear 1 to dotclear 2).
Search engine index
These operations are necessary, after importing content in your blog, to use internal search engine, on public and private pages.
Vacuum logs
Logs record all activity and connection to your blog history. Unless you need to keep this history, consider deleting these logs from time to time.
Empty templates cache directory
It may be useful to empty this cache when modifying a theme's .html or .css files (or when updating a theme or plugin).
Notice : with some hosters, the templates cache cannot be emptied with this extension. You may then have to delete the directory /cbtpl/ directly on the server with your FTP software.