New DirOptions.Cache field for in-memory caching and pre-compression for the fastest possible static file server

Read HISTORY.md it contains a breaking change, second parameter of HandleDir should be iris.Dir(...) instead of just a string

relative to: https://github.com/kataras/iris/issues/1556#issuecomment-661057446


Former-commit-id: 14b48a06fb3b99287dff543932be2937a64233b9

_examples/mvc/login-mvc-single-responsibility/main.go

@@ -18,7 +18,7 @@ func main() {
 
 	app.RegisterView(iris.HTML("./views", ".html").Layout("shared/layout.html"))
 
-	app.HandleDir("/public", "./public")
+	app.HandleDir("/public", iris.Dir("./public"))
 
 	userRouter := app.Party("/user")
 	{

_examples/mvc/login/main.go

@@ -28,7 +28,7 @@ func main() {
 		Reload(true)
 	app.RegisterView(tmpl)
 
-	app.HandleDir("/public", "./web/public")
+	app.HandleDir("/public", iris.Dir("./web/public"))
 
 	app.OnAnyErrorCode(func(ctx iris.Context) {
 		ctx.ViewData("Message", ctx.Values().

_examples/mvc/vuejs-todo-mvc/README.md

@@ -517,7 +517,7 @@ func main() {
 	// no need for any server-side template here,
 	// actually if you're going to just use vue without any
 	// back-end services, you can just stop afer this line and start the server.
-	app.HandleDir("/", "./public")
+	app.HandleDir("/", iris.Dir("./public"))
 
 	// configure the http sessions.
 	sess := sessions.New(sessions.Config{

_examples/mvc/vuejs-todo-mvc/src/web/main.go

@@ -20,7 +20,7 @@ func main() {
 	// no need for any server-side template here,
 	// actually if you're going to just use vue without any
 	// back-end services, you can just stop afer this line and start the server.
-	app.HandleDir("/", "./public")
+	app.HandleDir("/", iris.Dir("./public"))
 
 	// configure the http sessions.
 	sess := sessions.New(sessions.Config{

_examples/mvc/websocket/main.go

@@ -17,7 +17,7 @@ func main() {
 	// app.RegisterView(iris.HTML("./views", ".html"))
 
 	// render the ./browser/index.html.
-	app.HandleDir("/", "./browser")
+	app.HandleDir("/", iris.Dir("./browser"))
 
 	websocketAPI := app.Party("/websocket")