Add EF caching example

examples/v7-edge-functions/edgio.config.js

@@ -30,6 +30,15 @@ module.exports = {
         },
       ],
     },
+    {
+      name: 'echo',
+      override_host_header: 'http-echo.raees.me',
+      hosts: [
+        {
+          location: 'http-echo.raees.me',
+        },
+      ],
+    },
     {
       name: 'planetscale',
       override_host_header: 'aws.connect.psdb.cloud',

examples/v7-edge-functions/functions/general/caching.js

@@ -0,0 +1,29 @@
+import createFetchForOrigin from '../../utils/createFetchForOrigin';
+import '../../utils/polyfills/URL';
+
+const fetch = createFetchForOrigin('echo');
+
+export async function handleHttpRequest(request, context) {
+  const { method } = request;
+  const body = method === 'POST' ? await request.arrayBuffer() : null;
+
+  // get the headers from the incoming request, removing the content-length header
+  const headers = Object.fromEntries(
+    [...request.headers.entries()].filter(([key]) => key !== 'content-length')
+  );
+
+  const newRequest = new Request('https://http-echo.raees.me', {
+    method,
+    headers,
+    body,
+  });
+
+  const response = await fetch(newRequest);
+
+  // add a cache-control header for GET requests
+  if (method === 'GET') {
+    response.headers.set('cache-control', 's-maxage=600');
+  }
+
+  return response;
+}

examples/v7-edge-functions/package.json

@@ -18,10 +18,10 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@edgio/cli": "^7.2.7",
-    "@edgio/core": "^7.2.7",
-    "@edgio/devtools": "^7.2.7",
-    "@edgio/prefetch": "^7.2.7",
+    "@edgio/cli": "^7.2.8",
+    "@edgio/core": "^7.2.8",
+    "@edgio/devtools": "^7.2.8",
+    "@edgio/prefetch": "^7.2.8",
     "dotenv": "^16.3.1"
   },
   "repository": "[email protected]:edgio-docs/edgio-v7-edge-functions-example.git",

examples/v7-edge-functions/routes.js

@@ -39,9 +39,21 @@ export default new Router()
   .match('/example/redirects(.*)', {
     edge_function: './functions/general/redirect.js',
   })
+  .match('/example/caching', {
+    caching: {
+      enable_caching_for_methods: ['GET', 'POST'],
+    },
+    edge_function: './functions/general/caching.js',
+  })
   .match('/example/planetscale-database', {
     edge_function: './functions/database/planetscale/index.js',
   })
   .match('/example/upstash-database', {
     edge_function: './functions/database/upstash/index.js',
+  })
+  .match('/bug', {
+    caching: {
+      enable_caching_for_methods: ['GET', 'POST'],
+    },
+    edge_function: './functions/general/bug.js',
   });