J World

When it comes to losing weight, the debate between cardio and strength training has been ongoing for years. Should you lace up your running shoes and hit the pavement, or should you focus on lifting weights at the gym? The truth is, both forms of exercise have their unique benefits when it comes to weight loss. In this article, we’ll compare cardio and strength training to help you determine the best approach for your fitness goals. Plus, we’ll share 10 proven diet tips to help you maximize your workouts and lose weight faster. Cardio vs. Strength Training: Which One is Better? To determine the best approach for weight loss, let’s explore the benefits and drawbacks of both cardio and strength training. 1. Cardio for Weight Loss Cardiovascular exercise (commonly referred to as "cardio") includes activities like running, cycling, swimming, and jumping rope. Benefits of Cardio: Burns more calories during exercise: A 30-minute run can burn anywhere from 300 to 500 calories. Imp...

  When working on web applications, developers often encounter edge cases that can throw a wrench into seemingly straightforward code. One such scenario is dealing with the request.socket._peername property, which can sometimes return null . This issue can lead to headaches, especially when trying to log the client’s IP address or perform other socket-based operations. In this blog post, we will explore the reasons behind this behavior and provide robust solutions to handle it. What Is request.socket._peername ? In Node.js, the request.socket object represents the underlying network socket for an incoming HTTP request. The _peername property, when available, contains details about the remote client, such as: address : The client’s IP address port : The client’s port number family : The IP address family ( IPv4 or IPv6 ) However, there are scenarios where _peername can be null , which means the server couldn’t retrieve the client’s connection details. This can happen for variou...

  When I first integrated push notifications into my project, I assumed Firebase Cloud Messaging (FCM) was only for Android. But after some research, I discovered that Firebase Admin SDK can send push notifications to both iOS and Android devices , saving me from managing two separate notification services. In this article, I’ll share how I set up Firebase Admin SDK in Node.js to send push notifications to iOS and Android apps seamlessly. Why Firebase Admin SDK? Firebase Admin SDK is a powerful tool that simplifies sending notifications via Firebase Cloud Messaging (FCM) . You don’t need to maintain a separate notification system for iOS and Android — just one codebase. What You’ll Learn: ✅ How to send push notifications using Firebase Admin SDK. ✅ iOS and Android setup differences. ✅ Common pitfalls and how to avoid them. Step 1: Setting Up Firebase Admin SDK in Node.js Before we start, make sure your project is already set up with Firebase and that you’ve...

When working with Firebase in a NestJS project, many developers encounter the common error: Error: Service account must be an object. This error typically occurs during Firebase initialization when the service account is imported incorrectly. In this updated article, I’ll show you how to fix this error using import * as serviceAccount instead of require . Why the Error Occurs The error happens because Firebase expects the service account to be a plain JavaScript object. If you use require , TypeScript may interpret the import incorrectly, causing Firebase to receive an invalid service account configuration. The Correct Fix: Use import * as serviceAccount Step 1: Ensure Correct Service Account File Setup Make sure your Firebase service account file ( serviceAccountKey.json ) is stored securely in the root of your project or in a config directory. Avoid committing this file to source control. Step 2: Install Firebase Admin SDK npm install firebase-admin Step 3: Update Fir...

I recently ran into a challenge with error handling in my NestJS project. It’s a common scenario: you want to simplify errors for the client but still capture the original, raw error for debugging and monitoring purposes in Sentry. The problem? My current approach was sending the simplified error to Sentry, not the actual, unprocessed error. Here’s how I solved it. My Story: A Misstep in Error Handling I was working on the create function of my NestJS service, responsible for creating a new collection company. Everything was fine until I realized that while I was throwing clean, client-friendly error messages using HttpException , I wasn’t logging the full, raw error in Sentry. For example, my code looked something like this: throw new HttpException (errorMessage, errorStatus); Sure, my errorConvertor function transformed complex errors into simplified errorMessage and errorStatus for the client, but Sentry was capturing these processed errors instead of the original error. W...

When working with databases, it’s easy to overlook the impact of schema design on query performance. I learned this lesson the hard way. Here’s my story of how I optimized my Mongoose schema and aggregation logic to handle thousands of records efficiently. The Problem: Slow Queries and Lookup Overhead In my application, I needed to fetch CollectionOrder documents, which are linked to several other collections: RetailStore , DeliveryMan , and CollectionCompany . Each CollectionOrder had fields referencing these collections, which required multiple $lookup stages to fetch related data. Initially, my schema design looked like this: @Prop ({ required : true , type : mongoose. Schema . Types . ObjectId , ref : 'RetailStore' , }) retailStore : mongoose. Schema . Types . ObjectId ; @Prop ({ required : true , type : mongoose. Schema . Types . ObjectId , ref : 'DeliveryMan' , }) deliveryMan : mongoose. Schema . Types . ObjectId ; This design seemed fine at first, ...