refactor(concurrency): replaced manual WaitGroup management with new wg.Go() and removed redundant code.

cmd/main.go

@@ -23,11 +23,9 @@ import (
 func parallel(fns ...func()) {
 	var wg sync.WaitGroup
 	for _, fn := range fns {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			fn()
-		}()
+		})
 	}
 	wg.Wait()
 }

internal/api/handler.go

@@ -24,6 +24,7 @@ import (
 func NewHandler() *gin.Engine {
 	gin.SetMode("release")
 	r := gin.New()
+	r.Use(NoCache())
 	r.Use(ErrorHandler())
 	r.Use(ErrorLoggingMiddleware())
 
@@ -113,6 +114,15 @@ func NewHandler() *gin.Engine {
 	return r
 }
 
+func NoCache() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
+		c.Header("Pragma", "no-cache")
+		c.Header("Expires", "0")
+		c.Next()
+	}
+}
+
 func AuthMiddleware() gin.HandlerFunc {
 	if !auth.IsEnabled() {
 		return func(c *gin.Context) {

internal/metrics/systeminfo/system_info.go

@@ -79,39 +79,29 @@ func getSystemInfo(ctx context.Context, lastResult *SystemInfo) (*SystemInfo, er
 	var wg sync.WaitGroup
 
 	if !common.MetricsDisableCPU {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			errs.Add(s.collectCPUInfo(ctx))
-		}()
+		})
 	}
 	if !common.MetricsDisableMemory {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			errs.Add(s.collectMemoryInfo(ctx))
-		}()
+		})
 	}
 	if !common.MetricsDisableDisk {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			errs.Add(s.collectDisksInfo(ctx, lastResult))
-		}()
+		})
 	}
 	if !common.MetricsDisableNetwork {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			errs.Add(s.collectNetworkInfo(ctx, lastResult))
-		}()
+		})
 	}
 	if !common.MetricsDisableSensors {
-		wg.Add(1)
+		wg.Go(func() {
-		go func() {
-			defer wg.Done()
 			errs.Add(s.collectSensorsInfo(ctx))
-		}()
+		})
 	}
 	wg.Wait()
 

internal/task/task_test.go

@@ -130,10 +130,9 @@ func TestFinishMultipleCalls(t *testing.T) {
 	n := 20
 	wg.Add(n)
 	for range n {
-		go func() {
+		wg.Go(func() {
-			defer wg.Done()
 			task.Finish(nil)
-		}()
+		})
 	}
 	wg.Wait()
 }

internal/utils/functional/map.go

@@ -62,15 +62,13 @@ func (m Map[KT, VT]) RangeAllParallel(do func(k KT, v VT)) {
 	}
 
 	var wg sync.WaitGroup
-
+	for k, v := range m.Range {
-	m.Range(func(k KT, v VT) bool {
 		wg.Add(1)
-		go func() {
+		go func(k KT, v VT) {
+			defer wg.Done()
 			do(k, v)
-			wg.Done()
+		}(k, v)
-		}()
+	}
-		return true
-	})
 	wg.Wait()
 }
 

internal/utils/functional/set.go

@@ -1,8 +1,6 @@
 package functional
 
 import (
-	"sync"
-
 	"github.com/puzpuzpuz/xsync/v4"
 )
 
@@ -44,20 +42,6 @@ func (set Set[T]) RangeAll(f func(T)) {
 	})
 }
 
-func (set Set[T]) RangeAllParallel(f func(T)) {
-	var wg sync.WaitGroup
-
-	set.Range(func(k T) bool {
-		wg.Add(1)
-		go func() {
-			f(k)
-			wg.Done()
-		}()
-		return true
-	})
-	wg.Wait()
-}
-
 func (set Set[T]) Size() int {
 	return set.m.Size()
 }

internal/utils/io.go

@@ -92,16 +92,15 @@ func NewBidirectionalPipe(ctx context.Context, rw1 io.ReadWriteCloser, rw2 io.Re
 
 func (p BidirectionalPipe) Start() error {
 	var wg sync.WaitGroup
-	wg.Add(2)
 	var srcErr, dstErr error
-	go func() {
+	wg.Go(func() {
 		srcErr = p.pSrcDst.Start()
 		wg.Done()
-	}()
+	})
-	go func() {
+	wg.Go(func() {
 		dstErr = p.pDstSrc.Start()
 		wg.Done()
-	}()
+	})
 	wg.Wait()
 	return errors.Join(srcErr, dstErr)
 }

internal/utils/ref_count_test.go

@@ -12,14 +12,12 @@ func TestRefCounterAddSub(t *testing.T) {
 	rc := NewRefCounter() // Count starts at 1
 
 	var wg sync.WaitGroup
-	wg.Add(2)
 
 	rc.Add()
 	for range 2 {
-		go func() {
+		wg.Go(func() {
-			defer wg.Done()
 			rc.Sub()
-		}()
+		})
 	}
 
 	wg.Wait()