fix: Improve browser caching for public files

server/config/http.js

@@ -9,6 +9,9 @@
  * https://sailsjs.com/config/http
  */
 
+const serveStatic = require('serve-static');
+const sails = require('sails');
+
 module.exports.http = {
   /**
    *
@@ -50,5 +53,14 @@ module.exports.http = {
     // })(),
 
     poweredBy: false,
+
+    www(req, res, next) {
+      const middleware = serveStatic(sails.config.paths.public, {
+        maxAge: sails.config.http.cache,
+        immutable: req.url.startsWith('/assets/'),
+      });
+
+      return middleware(req, res, next);
+    },
   },
 };

server/config/routes.js

@@ -47,7 +47,11 @@ function staticDirServer(prefix, dirFn) {
     // Custom config properties are not available when the routes config is
     // loaded, so resolve the target value just before serving the request.
     const dir = dirFn();
-    const staticServer = serveStatic(dir, { index: false });
+    const staticServer = serveStatic(dir, {
+      index: false,
+      maxAge: sails.config.http.cache,
+      immutable: true,
+    });
 
     const reqPath = req.url;
     if (reqPath.startsWith(prefix)) {