FEATURE (gin): Add griz compression for static files and API responses

Author: RostislavDugin

backend/cmd/main.go

@@ -31,6 +31,7 @@ import (
 	_ "postgresus-backend/swagger" // swagger docs
 
 	"github.com/gin-contrib/cors"
+	"github.com/gin-contrib/gzip"
 	"github.com/gin-gonic/gin"
 	swaggerFiles "github.com/swaggo/files"
 	ginSwagger "github.com/swaggo/gin-swagger"
@@ -61,6 +62,15 @@ func main() {
 	gin.SetMode(gin.ReleaseMode)
 	ginApp := gin.Default()
 
+	// Add GZIP compression middleware
+	ginApp.Use(gzip.Gzip(
+		gzip.DefaultCompression,
+		// Don't compress already compressed files
+		gzip.WithExcludedExtensions(
+			[]string{".png", ".gif", ".jpeg", ".jpg", ".ico", ".svg", ".pdf", ".mp4"},
+		),
+	))
+
 	enableCors(ginApp)
 	setUpRoutes(ginApp)
 	setUpDependencies()

backend/go.mod

@@ -28,6 +28,7 @@ require (
 	cloud.google.com/go/auth v0.16.2 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
 	cloud.google.com/go/compute/metadata v0.7.0 // indirect
+	github.com/gin-contrib/gzip v1.2.3 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
 	github.com/googleapis/gax-go/v2 v2.14.2 // indirect

backend/go.sum

@@ -39,6 +39,8 @@ github.com/gin-contrib/cors v1.7.5 h1:cXC9SmofOrRg0w9PigwGlHG3ztswH6bqq4vJVXnvYM
 github.com/gin-contrib/cors v1.7.5/go.mod h1:4q3yi7xBEDDWKapjT2o1V7mScKDDr8k+jZ0fSquGoy0=
 github.com/gin-contrib/gzip v0.0.6 h1:NjcunTcGAj5CO1gn4N8jHOSIeRFHIbn51z6K+xaN4d4=
 github.com/gin-contrib/gzip v0.0.6/go.mod h1:QOJlmV2xmayAjkNS2Y8NQsMneuRShOU/kjovCXNuzzk=
+github.com/gin-contrib/gzip v1.2.3 h1:dAhT722RuEG330ce2agAs75z7yB+NKvX/ZM1r8w0u2U=
+github.com/gin-contrib/gzip v1.2.3/go.mod h1:ad72i4Bzmaypk8M762gNXa2wkxxjbz0icRNnuLJ9a/c=
 github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
 github.com/gin-contrib/sse v1.1.0/go.mod h1:hxRZ5gVpWMT7Z0B0gSNYqqsSCNIJMjzvm6fqCz9vjwM=
 github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=