| mod_heartbeat |
| |
| Broadcasts the current Apache Connection status over multicast. |
| |
| Example Configuration: |
| HeartbeatAddress 239.0.0.1:27999 |
| |
| Dependencies: |
| mod_status must be either a static module, or if a dynamic module, it must be |
| loaded before mod_heartbeat. |
| |
| |
| Consuming: |
| Every 1 second, this module generates a single multicast UDP packet, |
| containing the number of busy and idle workers. |
| |
| The packet is a simple ASCII format, similiar to GET query parameters in UDP. |
| |
| An Example packet: |
| v=1&ready=75&busy=0 |
| |
| Consumers should handle new variables besides busy and ready, separated by '&' |
| being added in the future. |
| |
| Misc: |
| The interval of 1 seconds is controlled by the HEARTBEAT_INTERVAL |
| compile time define. This is not currently tunable at run time. To make this |
| module send the status packet more often, you must add to the CFLAGS used to |
| compile the module to include: |
| -DHEARTBEAT_INTERVAL=3 |
| Would cause the broadcasts to be sent every 3 seconds. |
| |
| |
