flvx/plans/060-tunnel-quality-polling.md

060 Nezha-style Monitoring (1s test, 30s report)

Objective

Update all monitoring subsystems to test every 1 second and report (write to DB) every 30 seconds, matching Nezha-style monitoring behavior.

Changes

1. Tunnel Quality Prober (go-backend/internal/http/handler/tunnel_quality_prober.go)

• Change tunnelQualityProbeInterval from 10s to 1s
• Add tunnelQualityReportInterval = 30s for DB write throttling
• Update storeResult to cache in-memory every tick, write to DB only every 30s per tunnel
• Add atomic probing flag to prevent overlapping probeAll() goroutine pile-up
• Increase maxWorkers from 4 to 20

2. Service Monitor Checker (go-backend/internal/health/checker.go)

• Add serviceMonitorReportInterval = 30s for DB write throttling
• Add latestResults in-memory map and lastDBWrite map per monitor
• Add GetLatestCached() method for real-time API reads
• Add atomic checking flag to prevent overlapping runChecks() goroutine pile-up
• Modify worker goroutines to always update in-memory cache, only write to DB every 30s

3. Service Monitor Limits (go-backend/internal/monitoring/limits.go)

• Change CheckerScanIntervalSec default from 30 to 1
• Change WorkerLimit default from 5 to 20
• Change MinIntervalSec default from 30 to 1
• Change DefaultIntervalSec default from 60 to 1

4. Monitoring API Handler (go-backend/internal/http/handler/monitoring.go)

• Update monitorServiceLatestResultsHandler to prefer in-memory cached results from healthCheck.GetLatestCached()

5. Agent WebSocket Reporter (go-gost/x/socket/websocket_reporter.go)

• Change pingInterval (metric reporting) from 5s to 1s

6. Frontend - Tunnel Monitor (vite-frontend/src/pages/node/tunnel-monitor-view.tsx)

• Change QUALITY_POLL_INTERVAL from 10s to 1s
• Update detail view text: "自动探测中（每秒测试，30秒上报）"
• Update list view text: "每秒探测 · 更新于 ..."

7. Frontend - Service Monitor (vite-frontend/src/pages/node/monitor-view.tsx)

• Change DEFAULT_SERVICE_MONITOR_LIMITS defaults to match backend (1s intervals)
• Change service monitor + latest results polling from 30s to 1s
• Update info bar text: "每秒测试，30秒上报"