This page provides a reference for the metrics collected by LayerG and available for export to Prometheus.
Snapshot Metrics
| Name | Type | Description | Usage |
|---|
| SnapshotLatencyMs | Gauge | Average latency of requests in milliseconds over a snapshot period. | Identifying average request time, indicating system performance. |
| SnapshotRateSec | Gauge | Number of requests per second in the snapshot interval. | Tracking the request rate, understanding system load. |
| SnapshotRecvKbSec | Gauge | Rate of data received in kilobytes per second. | Monitoring incoming traffic rate, bandwidth management, performance tuning. |
| SnapshotSentKbSec | Gauge | Rate of data sent in kilobytes per second. | Assessing outgoing traffic, system output performance. |
API Metrics
| Name | Type | Description | Usage |
|---|
| Api | Counter, Timer | Metrics for API calls: request count, latency, bytes received/sent, errors. | Comprehensive view of API performance and error rates. |
| ApiRpc | Counter, Timer | Similar to Api, specific to RPC calls with rpc_id tagging. | Detailed insights into RPC call performance. |
| ApiBefore | Counter, Timer | Metrics for pre-processing phases of API calls. | Analyzing overhead or actions before main API processing. |
| ApiAfter | Counter, Timer | Metrics for post-processing phases of API calls. | Understanding post-processing steps in API execution. |
Message Metrics
| Name | Type | Description | Usage |
|---|
| Message | Counter | Count and size of received messages and error occurrences. | Monitoring volume and health of message traffic. |
| MessageBytesSent | Counter | Total bytes sent in messages. | Tracking amount of data sent in messages. |
Gauge Metrics
| Name | Type | Description | Usage |
|---|
| GaugeRuntimes | Gauge | Current value for runtime gauges. | Tracking number of runtime instances. |
| GaugeJsRuntimes | Gauge | Count of JavaScript runtime VMs. | JavaScript VM performance and resource allocation monitoring. |
| GaugeAuthoritativeMatches | Gauge | Current count of authoritative matches. | Load balancing and resource allocation for gaming servers. |
| GaugeSessions | Gauge | Number of active sessions. | Understanding user engagement and server load. |
| GaugePresences | Gauge | Number of user presences. | Tracking active user interactions, real-time features. |
| GaugeStorageIndexEntries | Gauge | Count of entries in a specific storage index. | Database performance and index management. |
Count Metrics
| Name | Type | Description | Usage |
|---|
| CountDroppedEvents | Counter | Increments count of dropped events. | Identifying issues with event handling. |
| CountWebsocketOpened | Counter | Number of opened WebSocket connections. | Monitoring WebSocket connection stability and usage. |
| CountWebsocketClosed | Counter | Number of closed WebSocket connections. | Analyzing WebSocket disconnections. |
| StorageWriteRejectCount | Counter | Count of rejected storage write operations. | Data integrity monitoring, storage operation issues. |
Custom Metrics
| Name | Type | Description | Usage |
|---|
| CustomCounter | Counter | Custom counter with specified name and tags. | Tracking specific metrics tailored to application. |
| CustomGauge | Gauge | Custom gauge metrics. | Monitoring specific custom application scenarios. |
| CustomTimer | Timer | Custom timer metrics. | Measuring specific time-bound operations. |