Add `Last-Modified' headers to improve caching

2016-07-26 10:24:53 +08:00
parent d465142275
commit dbaca66b2c
2 changed files with 6 additions and 0 deletions
--- a/src/serve_rendered.js
+++ b/src/serve_rendered.js
@@ -38,6 +38,8 @@ mbgl.on('message', function(e) {
 module.exports = function(options, repo, params, id) {
  var app = express().disable('x-powered-by');

+  var lastModified = new Date().toUTCString();
+
  var rootPath = options.paths.root;

  var styleFile = params.style;
@@ -289,6 +291,7 @@ module.exports = function(options, repo, params, id) {
          }

          res.set({
+            'Last-Modified': lastModified,
            'Content-Type': 'image/' + format
          });
          return res.status(200).send(buffer);