new examples

node/simple-webserver/index.js

@@ -0,0 +1,32 @@
+const http = require('http');
+
+const PORT = process.env.PORT || 3000;
+
+// Runtime env vars (read at server startup)
+const RUNTIME_PRIVATE_VAR = process.env.RUNTIME_PRIVATE_VAR || 'default-value';
+const RUNTIME_PUBLIC_VAR = process.env.RUNTIME_PUBLIC_VAR || 'default-value';
+
+console.log('=== Runtime Variables ===');
+console.log('RUNTIME_PRIVATE_VAR:', RUNTIME_PRIVATE_VAR);
+console.log('RUNTIME_PUBLIC_VAR:', RUNTIME_PUBLIC_VAR);
+
+const server = http.createServer((req, res) => {
+  if (req.url === '/' && req.method === 'GET') {
+    res.writeHead(200, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({
+      message: 'Hello from Node.js!',
+      runtimePrivateVar: RUNTIME_PRIVATE_VAR,
+      runtimePublicVar: RUNTIME_PUBLIC_VAR,
+    }));
+  } else if (req.url === '/health' && req.method === 'GET') {
+    res.writeHead(200, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({ status: 'ok' }));
+  } else {
+    res.writeHead(404, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({ error: 'Not found' }));
+  }
+});
+
+server.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});