Acronym for Time To Live
A common concept in computer science where information is given a number of seconds before it's considered "obsolete", used in at least IPv4 and DNS.
6 pages link to TTL:
lib/main.php:944: Notice: PageInfo: Cannot find action page
lib/main.php:839: Notice: PageInfo: Unknown action
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()