Merge branch 'master' into fix/update-actions-node24

The flat 'deploy' concurrency group caused ALL PRs to share one queue,
so pushing to any PR would cancel CI runs on other PRs.

Changed to deploy-${{ github.event.pull_request.number || github.ref }}
so each PR gets its own concurrency group while re-pushes to the same
PR still cancel the previous run.

.github/workflows/deploy.yml

@@ -17,7 +17,7 @@ on:
       - 'docs/**'
 
 concurrency:
-  group: deploy
+  group: deploy-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 env:
@@ -41,10 +41,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Go 1.22
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: '1.22'
           cache-dependency-path: |
@@ -124,7 +124,7 @@ jobs:
 
       - name: Upload Go coverage badges
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: go-badges
           path: .badges/go-*.json
@@ -139,12 +139,12 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 2
 
       - name: Set up Node.js 22
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: '22'
 
@@ -265,7 +265,7 @@ jobs:
 
       - name: Upload Node.js test badges
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: node-badges
           path: .badges/
@@ -282,10 +282,10 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Node.js 22
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: '22'
 
@@ -307,7 +307,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Start staging on port 82
         run: |
@@ -352,18 +352,18 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Download Go coverage badges
         continue-on-error: true
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: go-badges
           path: .badges/
 
       - name: Download Node.js test badges
         continue-on-error: true
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: node-badges
           path: .badges/

cmd/server/routes.go

@@ -33,6 +33,11 @@ type Server struct {
 	memStatsMu   sync.Mutex
 	memStatsCache runtime.MemStats
 	memStatsCachedAt time.Time
+
+	// Cached /api/stats response — recomputed at most once every 10s
+	statsMu      sync.Mutex
+	statsCache   *StatsResponse
+	statsCachedAt time.Time
 }
 
 // PerfStats tracks request performance.
@@ -380,6 +385,17 @@ func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
 }
 
 func (s *Server) handleStats(w http.ResponseWriter, r *http.Request) {
+	const statsTTL = 10 * time.Second
+
+	s.statsMu.Lock()
+	if s.statsCache != nil && time.Since(s.statsCachedAt) < statsTTL {
+		cached := s.statsCache
+		s.statsMu.Unlock()
+		writeJSON(w, cached)
+		return
+	}
+	s.statsMu.Unlock()
+
 	var stats *Stats
 	var err error
 	if s.store != nil {
@@ -392,7 +408,7 @@ func (s *Server) handleStats(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	counts := s.db.GetRoleCounts()
-	writeJSON(w, StatsResponse{
+	resp := &StatsResponse{
 		TotalPackets:       stats.TotalPackets,
 		TotalTransmissions: &stats.TotalTransmissions,
 		TotalObservations:  stats.TotalObservations,
@@ -411,7 +427,14 @@ func (s *Server) handleStats(w http.ResponseWriter, r *http.Request) {
 			Companions: counts["companions"],
 			Sensors:    counts["sensors"],
 		},
-	})
+	}
+
+	s.statsMu.Lock()
+	s.statsCache = resp
+	s.statsCachedAt = time.Now()
+	s.statsMu.Unlock()
+
+	writeJSON(w, resp)
 }
 
 func (s *Server) handlePerf(w http.ResponseWriter, r *http.Request) {

cmd/server/store.go

@@ -98,6 +98,11 @@ type PacketStore struct {
 	// computed during Load() and incrementally updated on ingest.
 	distHops  []distHopRecord
 	distPaths []distPathRecord
+
+	// Cached GetNodeHashSizeInfo result — recomputed at most once every 15s
+	hashSizeInfoMu    sync.Mutex
+	hashSizeInfoCache map[string]*hashSizeNodeInfo
+	hashSizeInfoAt    time.Time
 }
 
 // Precomputed distance records for fast analytics aggregation.
@@ -3722,8 +3727,26 @@ type hashSizeNodeInfo struct {
 	Inconsistent bool
 }
 
-// GetNodeHashSizeInfo scans advert packets to compute per-node hash size data.
+// GetNodeHashSizeInfo returns cached per-node hash size data, recomputing at most every 15s.
 func (s *PacketStore) GetNodeHashSizeInfo() map[string]*hashSizeNodeInfo {
+	const ttl = 15 * time.Second
+	s.hashSizeInfoMu.Lock()
+	if s.hashSizeInfoCache != nil && time.Since(s.hashSizeInfoAt) < ttl {
+		cached := s.hashSizeInfoCache
+		s.hashSizeInfoMu.Unlock()
+		return cached
+	}
+	s.hashSizeInfoMu.Unlock()
+	result := s.computeNodeHashSizeInfo()
+	s.hashSizeInfoMu.Lock()
+	s.hashSizeInfoCache = result
+	s.hashSizeInfoAt = time.Now()
+	s.hashSizeInfoMu.Unlock()
+	return result
+}
+
+// computeNodeHashSizeInfo scans advert packets to compute per-node hash size data.
+func (s *PacketStore) computeNodeHashSizeInfo() map[string]*hashSizeNodeInfo {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
 

docker-compose.yml

@@ -9,6 +9,8 @@ services:
     image: corescope:latest
     container_name: corescope-prod
     restart: unless-stopped
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     ports:
       - "${PROD_HTTP_PORT:-80}:${PROD_HTTP_PORT:-80}"
       - "${PROD_HTTPS_PORT:-443}:${PROD_HTTPS_PORT:-443}"
@@ -31,6 +33,8 @@ services:
     image: corescope:latest
     container_name: corescope-staging
     restart: unless-stopped
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     ports:
       - "${STAGING_HTTP_PORT:-81}:${STAGING_HTTP_PORT:-81}"
       - "${STAGING_MQTT_PORT:-1884}:1883"
@@ -59,6 +63,8 @@ services:
     image: corescope-go:latest
     container_name: corescope-staging-go
     restart: unless-stopped
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     ports:
       - "${STAGING_GO_HTTP_PORT:-82}:80"
       - "${STAGING_GO_MQTT_PORT:-1885}:1883"