mod_watchdog
provides infrastructure for other modules to periodically run tasks
Base
mod_watchdog.c
watchdog_module
Available in Apache 2.3 and later

mod_watchdog defines programmatic hooks for other modules to periodically run tasks. These modules can register handlers for mod_watchdog hooks. Currently, the following modules in the Apache distribution use this functionality:

- mod_heartbeat
- mod_heartmonitor
- mod_md
- mod_proxy_hcheck

To allow a module to use mod_watchdog functionality, mod_watchdog itself must be statically linked to the server core or, if a dynamic module, be loaded before the calling module.

WatchdogInterval
Watchdog interval in seconds
WatchdogInterval time-interval[s]
WatchdogInterval 1
server config

Sets the interval at which the watchdog_step hook runs. Default is to run every second.