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doc/Extensions/Poller-Service.md
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# Poller Service
# WARNING: THIS IS HIGHLY EXPERIMENTAL AND MAY NOT WORK
The Poller service is an alternative to polling and discovery cron jobs and provides support for distributed polling without memcache. It is multi-threaded and runs continuously discovering and polling devices with the oldest data attempting to honor the polling frequency configured in `config.php`. This service replaces all the required cron jobs except for `/opt/librenms/daily.sh` and `/opt/librenms/alerts.php`.
Configure the maximum number of threads for the service in `$config['poller_service_workers']`. Configure the minimum desired polling frequency in `$config['poller_service_poll_frequency']` and the minimum desired discovery frequency in `$config['poller_service_discover_frequency']`. The service will not poll or discover devices which have data newer than this this configured age in seconds. Configure how frequently the service will attempt to poll devices which are down in `$config['poller_service_down_retry']`.