module caching

Author: TidbitsJS

Modules/module-caching.js

@@ -0,0 +1,35 @@
+// Loading request module
+const { send } = require("./Create-Module/request");
+
+console.log(`Cache check after send function loading`);
+console.log(require.cache);
+
+const { read } = require("./Create-Module/response");
+
+// Loading request module again.
+const { REQUEST_TIMEOUT } = require("./Create-Module/request");
+
+console.log(`Cache check after REQUEST_TIMEOUT loading`);
+console.log(require.cache);
+
+// Even after trying to load request module twice here,
+// the console.log(module) in request file will be logged only once.
+// This happens cause of the cache mechanism of node
+
+function makeRequest(url, data) {
+  send(url, data);
+  return read();
+}
+
+const responseData = makeRequest("https:www.google.com", "Hello World");
+
+setTimeout(() => {
+  console.log(responseData);
+}, REQUEST_TIMEOUT);
+
+// Check cached modules
+console.log(require.cache);
+
+// Logging before and after loading `send` & `REQUEST_TIMEOUT` will clear that,
+// the complete `request` module with alll its exports gets cached by node,
+// even though the `send` function & `REQUEST_TIMEOUT` variable has been loaded separately