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Available metrics
Custom Cobrowse metrics are available via OpenMetrics endpoints and include counters, gauges and summaries.
Some of the custom Cobrowse instance metrics we provide via our OpenMetrics endpoints are:
cobrowse_device_registrations_total
Counter
Count of devices registered
cobrowse_presence_queue_delay_seconds
Gauge
Current wait time for presence queue processing (should be close to 0 most of the time)
cobrowse_presence_queue_length_count
Gauge
Current number of sockets waiting in the presence system processing queue (should be close to 0 most of the time)
cobrowse_session_created_total
Counter
Count of sessions created
cobrowse_session_duration_seconds
Summary
Duration of sessions
cobrowse_session_unused_total
Counter
Count of sessions that were created but then never activated
cobrowse_websocket_byte_in_total
Counter
Count of WebSocket bytes received
cobrowse_websocket_connection_duration_seconds
Summary
Duration of WebSocket connection
cobrowse_websocket_connection_end_total
Counter
Count of WebSocket connections ended
cobrowse_websocket_connection_start_total
Counter
Count of WebSocket connections started
cobrowse_websocket_connections_count
Gauge
Current number of open WebSocket connections
cobrowse_websocket_message_in_total
Counter
Count of WebSocket messages received
cobrowse_websocket_message_size_bytes
Summary
Size of WebSocket message
cobrowse_limits_members_used_count
Gauge
Count of used members
cobrowse_limits_members_remaining_count
Gauge
Count of remaining members
cobrowse_limits_members_daily_used_count
Gauge
Count of used daily members
cobrowse_limits_members_daily_remaining_count
Gauge
Count of remaining daily members
cobrowse_limits_sessions_used_count
Gauge
Count of used sessions
cobrowse_limits_sessions_remaining_count
Gauge
Count of remaining sessions
cobrowse_limits_session_concurrency_used_count
Gauge
Count of used concurrent sessions
cobrowse_limits_session_concurrency_remaining_count
Gauge
Count of remaining concurrent sessions
Many of these will depend on the behaviour of your deployment and use case, so we do not provide specific ranges thresholds to monitor by default. You should monitor and decide what the appropriate limits are for your deployment.
As well as these custom metrics, the prometheus client also collects some generic system metrics and NodeJS specific metrics, see below for more information:
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