Programming News and Topics: Latest News on Computer Programming from Techminis

A naukri.com initiative

New

Home

Programming News

Dev

176

Image Credit: Dev

Building a Scalable Real-Time Driver Tracking System

The article discusses building a real-time delivery tracking system for a Zomato-like app using Flutter, NestJS, and Golang for the frontend and backend.
It focuses on the core tracking logic that is language-independent and provides a GitHub link for the code.
The prototype allows users to track a driver's live location on a map through WebSocket connections.
The initial WebSocket setup for tracking drivers' locations is explained, but limitations arise with scalability for a large number of drivers.
Implementing Redis Pub/Sub enhances scalability by targeting specific users and handling multiple server instances efficiently.
Redis Streams Adapter further improves reliability, scalability, and message order compared to Redis Pub/Sub.
The article introduces Kafka for massive scale applications and discusses its role in handling real-time data streams.
Guidance is provided for frontend developers on interacting with the WebSocket server for tracking drivers' locations.
A comparison of different approaches including basic WebSockets, Redis Pub/Sub, Redis Streams Adapter, and Kafka is presented with their pros and cons.
Overall, the article offers insights into building scalable real-time driver tracking systems and future-proofing for enterprise-level applications.

Read Full Article

10 Likes

Dev

213

Image Credit: Dev

Daily JavaScript Challenge #JS-180: Reverse Words in a String

The Daily JavaScript Challenge involves reversing words in a string while maintaining the original word order but flipping the order of the words themselves.
Participants are encouraged to fork the challenge, write their solution, test it against provided test cases, and share their approach in the comments.
The challenge focuses on string manipulation, and developers can refer to documentation on string splitting in JavaScript for more information.
Join the discussion by sharing your approach, any interesting edge cases, and your learnings from solving this challenge.

Read Full Article

12 Likes

Inside

403

Episode 36 “Ahead of Time Computation” with Dan Heidinga

OpenJDK’s Project Leyden aims to improve the startup and warmup time of Java applications by shifting computation from those phases to the applications' build time.
Java 24 introduces ahead-of-time class loading and linking as the initial step towards achieving this goal.
Dan Heidinga, JVM Runtime Architect at Oracle, discusses Leyden's approach, features available in its early access build, and those that are still in development.
The episode features Nicolai Parlog interviewing Dan Heidinga, a member of projects Leyden and Valhalla, on the improvements and advancements in Java development.

Read Full Article

24 Likes

Dev

163

Image Credit: Dev

Kickstarting a .NET Solution from Scratch with the CLI

The CLI is a crucial tool for developers, offering simplicity and universality in its usage.
The article focuses on using the CLI to kickstart a .NET project, providing a simplified guide.
While mainstream editors come with templates, they can be less customizable compared to the CLI.
The article walks through creating a .NET solution from scratch using only the CLI.
Commands include creating folders, adding projects to the solution, and setting up Git.
By following the steps outlined, a structured .NET solution can be easily built.
The process involves creating folders, initializing projects, adding them to the solution file, and setting up Git.
A README file is also created, Git repository is set up, and code snippets are provided for easy reference.
Overall, the article presents a straightforward and powerful approach to starting a .NET project with the CLI.
Using the CLI not only simplifies project setup but also enhances customization and understanding of project structure.

Read Full Article

9 Likes

Dev

113

Image Credit: Dev

Why Developers Seek an Auth0 Alternative

Many developers seek an alternative to Auth0 due to the high cost of its paid Basic plan, which starts at $525/month for 7.5K active users.
Top community-recommended alternatives include Cloud-Provider Auth Services like AWS Cognito, Azure B2C, and Google Identity Platform, Backend-as-a-Service options like Firebase Auth and Supabase Auth, and Self-Hosted Open-Source solutions like Keycloak, Ory Kratos, Supertokens, and Authgear.
Key considerations before switching to an alternative include calculating total cost based on expected growth, assessing feature requirements, evaluating maintenance overhead for self-hosting, checking vendor lock-in policies, and considering community support.
By evaluating factors such as cost, complexity, and required features, developers can choose a solution that aligns with their technical needs and budget, whether it's a serverless BaaS, a self-hosted IAM, or a custom-built solution.

Read Full Article

6 Likes

Medium

158

return 0 in C/C++ — A Beginner’s Question That Deserves a Real Answer

In C/C++, the 'return 0;' statement is used to signal that the program has completed its execution successfully.
The number 0 in 'return 0;' acts as a special value sent back to the operating system or environment to indicate successful completion.
Returning 1 or any non-zero number in C/C++ typically indicates that something went wrong during the program's execution.
The return value of 0 or non-zero can be checked by scripts or other programs to determine the next course of action.

Read Full Article

9 Likes

Dev

303

Image Credit: Dev

How We Launched 10x Faster in Production

Gentian Elmazi, a software engineer and co-founder of Infinitcode.com, discusses the company's focus on developing web applications powered by deep tech like AI, NLP, and blockchain.
Infinitcode.com enforces maintainable, readable, and scalable code using layered architectural patterns and GitHub Flow for source control, but faced a bottleneck with senior engineers spending 40% of their time on code reviews.
The company piloted an internal AI code reviewer, Infinitcode.ai, which led to a 35% productivity gain, 30% performance improvement, catching over 15 security bugs, and fixing 120+ typos and style violations.
Key features of Infinitcode.ai include multi-model integration, custom rulesets, rapid support and iteration, with lessons learned emphasizing that AI empowers but doesn't replace developers, the importance of iterating on rules, and the need to measure and visualize metrics for ROI.

Read Full Article

18 Likes

Dev

240

Image Credit: Dev

Functional Components vs Class components in React

React offers two main ways to define components: Functional and Class-based, with a shift towards functional components with the introduction of React Hooks.
Functional components are plain JavaScript functions that return JSX and now can handle state and side effects through Hooks.
Class components are ES6 classes that extend from React.Component with more boilerplate and use of 'this', but still relevant for legacy projects and understanding React's lifecycle.
Functional components are preferred in modern React development due to their concise nature, ease of use, and full feature support via Hooks, offering cleaner and more efficient code.

Read Full Article

14 Likes

Dev

Image Credit: Dev

What it’s like to be a software developer with tinnitus

Living with tinnitus can be challenging as it means never experiencing absolute silence again.
Software developers can work efficiently with tinnitus, although the constant beep can be a distraction during deep focus tasks.
Strategies for coping with tinnitus as a software developer include acceptance of the condition, using other soothing sounds, taking regular breaks, and maintaining good ergonomic practices.
Optimizing work environment, focusing on controllable factors, and making the best of the situation can help reduce the impact of tinnitus on productivity and well-being.

Read Full Article

1 Like

Dev

113

Image Credit: Dev

Efficient Cache Design with Bloom Filters in Go

Bloom filters can assist in cache design by reducing invalid queries and optimizing database performance.
They quickly determine potential data existence, aiding in avoiding unnecessary database accesses.
By saving memory and offering fast queries close to O(1), Bloom filters offer substantial advantages.
Efficiently filtering data, Bloom filters help alleviate database load and enhance performance.
Despite the possibility of false positives, Bloom filters are valuable for big data streams and cache scenarios.
The structure of a Bloom filter includes a bit array to track data existence and multiple hash functions for data mapping.
Implementation in Go involves creating a Bloom filter struct and methods such as Add and MightContain for data operations.
Additional methods like getHashes and Reset further enhance the functionality of the Bloom filter.
Optimizing performance, Bloom filters can efficiently handle data insertion and queries in cache systems.
The benefits of Bloom filters include reducing invalid queries, saving storage space, and enhancing query efficiency.

Read Full Article

6 Likes

Dev

131

Image Credit: Dev

5 developer tools to really step up your workflow

Lazygit is a TUI for git management, allowing easy changes, commits, and branch operations.
LazyDocker is a TUI manager for Docker, providing insights into running containers, available images, logs, metrics, and volumes.
Vim keybindings or using Neovim can enhance coding efficiency, especially with extensions in IDEs like VSCode for Vim support.
Obsidian is a note-taking tool with plugin support and note graph visualization, suitable for all users, and Tmux enables terminal multiplexing for efficient multitasking.

Read Full Article

7 Likes

Dev

380

Image Credit: Dev

Step-by-Step Guide to Set Up a Cron Job to Run a Report

Set up a free-tier AWS EC2 instance as a baseline development environment before automating report generation with cron jobs.
Steps to set up a free-tier EC2 instance include creating an AWS account, launching an EC2 instance, configuring storage and security groups, and accessing the instance.
Automate report execution by preparing your report script, setting up a cron job to schedule the script's execution, defining the cron schedule and command, saving and verifying the cron job, and monitoring and troubleshooting any issues.
Ensure your report script runs correctly, set execution permissions, schedule with crontab, redirect output to logs for monitoring, verify the cron job, and troubleshoot if needed.

Read Full Article

22 Likes

Medium

149

Image Credit: Medium

Practical implementation on adding Alpha on a strategic allocation using Black-Litterman model…

The combination of Strategic Asset Portfolio (SAP) and Tactical Asset Portfolio (TAP) forms the final optimal portfolio according to the Black-Litterman model.
Traditional Mean-Variance Optimization faces challenges like making precise forecasts, which are addressed by the Black-Litterman model.
Black-Litterman model allows for classification-based approach to construct investor views and incorporates Sharpe Ratios for SAP and TAP to determine expected returns.
The optimization problem in Black-Litterman model is formulated as a convex optimization framework with risk aversion coefficients and penalties for turnover and covariance shrinkage.

Read Full Article

9 Likes

Dev

176

Image Credit: Dev

Creating Reports to Find Missing Data During the Normalization Process in SQL

Creating reports in SQL to find missing data during the normalization process is crucial for maintaining data integrity.
Common SQL reporting patterns like NOT EXISTS, IS NULL, CASE, and boolean-style flags can help detect and quantify data anomalies.
Examples include identifying orphaned records, detecting null values in critical fields, and flagging inconsistent data types or logic.
By automating the reporting pipeline, outputting results to dashboards, and following best practices, SQL-based data integrity reports can be made more actionable and accessible.

Read Full Article

10 Likes

Dev

339

Image Credit: Dev

How to Redirect to Mobile and Desktop Versions in JavaScript?

JavaScript redirects between mobile and desktop versions of websites can lead to unexpected behaviors, especially with user navigation between the versions.
It's crucial to set a cookie to track user preferences for device versions to avoid redirect loops and ensure a seamless user experience.
A JavaScript solution involves setting and getting cookies to remember user preferences for mobile or desktop versions and adjusting redirects accordingly.
Adding a query string to links and handling it in the main desktop site allows users to switch versions effectively while maintaining their preferences.

Read Full Article

20 Likes

For uninterrupted reading, download the app

Programming News

Discover more