Why Join Coursera Plus this Black Friday? (40% OFF)

Hello guys, Black Friday and Cyber Monday, also known as Cyber week 2025 is here early. And Coursera just dropped one of the best deals of the year. Coursera Plus is now 40% OFF — just $240 for 12 months (regular price $399). But here’s the catch: this deal expires soon, and once it’s gone, prices return to normal. If you’re serious about advancing your career in AI, Machine Learning, Deep Learning, Data Science, or Cloud Computing, this is the moment to act.

10 Best Books and Developer Tools Programmers Should Buy on Amazon Black Friday 2025 SALE

Hello guys! Happy Thanks Giving and a big thanks for reading my blog, newsletter, and books. If you are wondering what to buy on this Black Friday, you have come to the right place. Earlier, I have shred best Black Friday Deals for developers for System Design, and now I am going to share 10 things you can buy on Amazon. Amazon’s biggest sale of the year, Black Friday 2025 is here, and it’s the perfect opportunity to upgrade your developer toolkit without breaking the bank. If you ask me, This is one event I always wait for to shop the things I love.

I mostly shop electronics, books, gadgets like Kindle as well as thing which help me on development like best computers, best chairs, best head sets, and best tables and accessories.

In this post, I am going to share some of those things which I hope you can also find inspiration and useful and improve your productivity and working experience.

Remember, we spend most of our time in our chair, computer and desk and I strongly believe that this should be the best of the best.

Disclosure: some links are affiliate links and I may earn a commission with no extra cost to you. If you buy using my link thanks a lot for supporting.

10 Things Developers Can Buy on Black Friday SALE on Amazon

Here are 10 things Software developers and anyone working on Computers and digital worlds can buy this Black Friday to increase productivity and working experience

1. Books

I am a nerd, I read hundreds of books and I also buy a lot of books so I don’t miss any chance of buying books. I buy all kinds of books but most of my buys are technical books. If you need some inspiration here are my selected picks for this black Friday

2. High-Resolution Monitor

A good monitor can make a world of difference in your productivity. Look for deals on 4K or ultrawide monitors to maximize your screen real estate and enjoy crisp visuals.

If you need a recommendation, LG 34WP60C-B 34-Inch 21:9 Curved UltraWide QHD Monitor is my favorite, with stunning 4K resolution and excellent color accuracy, this monitor is perfect for detailed coding and design work.

3. Mechanical Keyboard

If you haven’t changed your keyboard for a long time then may be this is the best time to get a new keyboard. I suggest you should upgrade your typing experience with a mechanical keyboard.

They offer better tactile feedback, durability, and a satisfying typing experience that can enhance your coding sessions.

While there are many mechanical keyboards available on Amazon but if you need recommendation I suggest to try out MageGee Portable 60% Mechanical Gaming Keyboard, this keyboard offers a satisfying typing experience with tactile feedback, plus wireless connectivity for a clutter-free desk.

4. Ergonomic Chair

Comfort is key for long coding sessions. An ergonomic chair can help you maintain good posture, reduce back pain, and stay comfortable while working.

If you need a recommendation, GABRYLLY Ergonomic Mesh Office Chair is a good one. Renowned for its ergonomic design, this chair supports proper posture, reducing back pain during long coding sessions.

5. Noise-Canceling Headphones

You can eliminate distractions with noise-canceling headphones They are perfect for maintaining focus in noisy environments or during intense coding marathons.

I used to have a Bose noise cancelling head phones and I highly recommend it to anyone who need a noise cancelling head set but its bit expensive.

If you need slightly less expensive option then Soundcore Anker Life Q20 Hybrid Active Noise Cancelling Headphones.

These headphones deliver top-notch noise cancellation and sound quality, helping you stay focused in noisy environments.

And, if you need earbuds, this JBL Tune Buds is really good with noise cancelation feature and 48 hours of battery life.

6. External SSD

Speed up your development workflow with an external SSD. They offer fast read/write speeds, making them ideal for storing large projects and quickly transferring files.

There are many external SSD available in Amazon but my favorite is SanDisk 2TB Extreme Portable SSD. This portable SSD offers blazing fast read/write speeds, making it ideal for storing and transferring large projects efficiently.

7. Standing Desk

Alternate between sitting and standing to improve your health and productivity. While I found it tough to work or code while standing they are great to take calls or doing some light works.

If you want one then you should look for adjustable standing desks that offer flexibility and ease of use and if you need a recommendation ErGear Height Adjustable Electric Standing Desk is a great one.

This adjustable desk allows you to switch between sitting and standing, promoting better health and productivity.

8. High-Quality Mouse

If you haven’t changed your mouse for quite some time then Black Friday is a great opportunity. If you need a wireless mouse then Logitech M185 Wireless Mouse is a very affordable one.

IT is a reliable and budget-friendly option, providing smooth and precise tracking for everyday computing tasks.

Its comfortable, ambidextrous design makes it a great choice for both right and left-handed users. This mouse is a top choice for developers. I use it everyday.

9. Smart Home Devices

Enhance your home office with smart home devices like smart bulbs, thermostats, or voice assistants. These can help create a comfortable and efficient working environment.

For example, Google Nest Mini 2nd Generation Smart Speaker with Google Assistant is a compact and affordable smart speaker with Google Assistant built-in, offering hands-free control of your smart home devices and access to your favorite music, news, and more.

Its improved sound quality and enhanced voice recognition make it a valuable addition to any smart home setup.

10. Portable Monitor

A portable monitor can be a game-changer for developers who work on the go. They are lightweight, easy to set up, and provide extra screen space for multitasking.

While you can find many portable monitor from Acer, Asus, I personally like KYY Portable Monitor 15.6inch 1080P FHD. It is lightweight and easy to set up, this portable monitor is perfect for developers who need extra screen space on the go.

That’s all about my 10 things you can buy this Black Friday and Cyber Monday to improve your developer experience. I think investing in things you use daily is the best investment and now you can buy same stuff with lessor price.

Don’t miss out on these great deals to enhance your development setup. Share your favorite Black Friday finds and deals in the comments below!

Happy Black Friday and Thanks Giving in advance!!

And, if you need more deals, here are the best Black Friday deals I have curated for developers:

P. S. - On this Black Friday, I’m offering 35% OFF annual subscriptions. If you always wanted to join this is the best price you can join, its just $2 per month, less than a cup of coffee. Price will increase after Black Friday.

Exponent Black Friday Deal 2025 (40% OFF) and 7 Best Courses for Technical Interviews in 2026

Hello guys, In today’s really tough and competitive tech job market, thorough preparation is key to acing your interviews. It has become seriously hard to get a job for senior and mid senior level and I know many people who are in the market but not getting any calls or offers. That’s why its important that you make the most of the few opportunity you get and you should not leave any stone unturned.

In this kind of market, companies also become choosy as they have lot of talented individuals who are interviewing for same jobs. Hence, you need to go extra mile when it comes to preparation and choosing the right resources is utmost important for that.

Can you Crack FAANG System Design Interview with ByteByteGo? Review

Hello guys, breaking into FAANG (Facebook/Meta, Amazon, Apple, Netflix, Google) or other top-tier tech companies has become one of the most competitive challenges in software engineering. Candidates face multiple rounds of coding challenges, system design interviews, machine learning design discussions, and increasingly even Generative AI and OOP design problems. With stakes this high, it’s no surprise that countless prep platforms, books, and courses promise to help you land the job. Among them, ByteByteGo — created by Alex Xu (author of System Design Interview — An Insider’s Guide) — has rapidly emerged as one of the most popular and trusted resources.

Don’t Write Brittle Unit Tests — Focus on Behavior, Not Implementation

Hello guys, If you’ve been writing unit tests for a while, you’ve probably experienced test brittleness — those fragile tests that break every time you refactor, rename a method, or restructure your code, even though the actual behavior hasn’t changed. These tests slow you down, destroy confidence, and turn your test suite into a maintenance nightmare.

Stop Shipping Bugs: Why Every Team Needs an AI Reviewer in 2025

Hello guys, It was Tuesday morning when the Slack notification appeared, "Production is down. Database migration failed. We're losing $15,000 per minute." The developer who shipped the code felt sick. The code review passed. The tests passed. Nobody caught the edge case. Nobody caught the subtle bug that only manifests under specific database conditions. By the time they rolled back, the damage was done. Lost revenue. Lost customer trust. Lost sleep. While this story is fictional the situation is real and we have seen it manifest on different place in different shape.

Difference between @AutoWired and @Qualifier in Spring Framework?

Hello guys, if you are preparing for Spring Framework or Spring Boot interviews then you should always prepare comparison questions like what is difference between @Qualifier and @AutoWired annotation in Spring? This kind of questions are good to demonstrate not only your knowledge but also how well you understand them and its also your chance to impress the interviewer. In the past, I have answered @Bean vs @Component and @Controller vs @RestController annotation and in this article, I am going to explain you the difference between @Autowired and @Qualifier in Spring Framework.

How to Solve "Error starting Application Context" in Spring Framework?

Hello guys, Spring Boot is a popular framework for building Java applications, providing a streamlined development experience. However, like any software, Spring Boot applications can encounter errors during startup. One common error that developers may encounter is the "Error starting ApplicationContext" error. This error typically indicates an issue with the application's configuration or dependencies but it's really hard to find what exactly is wrong and how to fix it. In the past, I have shared tips on how to fix error creating bean error and In this article, we will explore various solutions to fix this error and ensure a successful startup of your Spring Boot application.

Top18 Spring Cloud Features for Microservices Architecture in Java

Hello guys, If you are doing Java development using Spring Boot then you may already know that Spring Cloud is a popular open-source framework for implementing microservices in Java. It provides a wide range of features that simplify the development, deployment, and management of Microservices in Java. In this article, we will discuss some of the key features of the Spring Cloud framework that makes it an excellent framework for developing Microservices in Java. Microservices architecture is a modern approach to building complex applications as a collection of loosely coupled, independently deployable services.

What is Backend for front-end pattern in Microservices? How to use it? Example Tutorial

Hello guys, as Organizations embrace Microservices architecture, the need for efficient communication and collaboration between front-end and back-end teams becomes crucial. To address this, the Backend for Front-End (BFF) pattern has emerged as a valuable approach. BFF pattern allows front-end developers to have dedicated back-end services that cater specifically to their needs, enabling them to build user interfaces more effectively. In the past, I have shared several Microservices design patterns like Event Sourcing, SAGA, Database Per Microservices, CQRS, API Gateway, Aggregator Design Pattern, and also shared best practices to design Microservices and in this article, I am going to talk about the Backend for Front-End pattern entails and how to effectively utilize it in microservices architecture.

What is Circuit Breaker Design Pattern in Microservices? How to implement it?

Hello guys, Microservices design patterns are very important concepts for Java developers to learn, not just to create a robust, scalable, and high-performance Microservice architecture but also to do well on Java developer interviews. In the past, I have shared several Microservices design patterns like e Event Sourcing, SAGA, Database Per Microservices, CQRS, API Gateway, and also shared best practices to design Microservices and in this article, I am going to talk about Circuit-Breaker Design Pattern, and how you can implement in Java using Spring Cloud Framework. This is not just an important Microservice Pattern but also a popular Microservice question which I have also mentioned earlier in my article about 15 Microservices questions for Interviews. If you haven't read that article yet, I suggest read it, especially if you are preparing for Java and Microservice interviews.

What is @Conditional annotation in Spring Framework? Example Tutorial

Hello guys, if you want to know what is @Conditional annotation in Spring Framework and Spring Boot, and how to use it then you have come to the right place. Earlier, I have shared best free courses to learn Spring Framework and Spring Boot, and in this article, you'll learn what they are, how to use them with practical examples. Spring 4.0 introduced the @Conditional annotation that is used for conditional checking for bean registration. This annotation offers more support than the @Profile annotation provided by the spring framework and most of the Spring Boot matching is attributed to this annotation. It allows you to setup features based upon certain conditions like presence of a class in classparth or a JAR File which is how Spring Boot Auto-configuration works.

Difference between @Controller vs @RestController in Spring Framework

Hello and welcome to the blog post. If you are preparing for Java or Spring Boot interview, you may have come across this topic. In this article, we are going to have a look at the difference between @Controller and @RestController annotation. Let's understand with the help of an example.
Spring Framework is a popular open-source application framework that provides infrastructure support for developing Java applications. One of the essential components of Spring Framework is the controller, which is used to handle HTTP requests and provide responses to clients. In Spring, there are two types of controllers: @Controller and @RestController.

Difference between @RequestParam and @PathVariable in Spring MVC

Hello guys, if you are wondering what is difference between @ReqestParam and @PathVaraible annotation in Spring MVC, most likely because it was asked to you on a Java and Spring interview or maybe you are just curious then you have come to the right place. In the past, I have talked about difference between @Component, @Service, @Reposistory and @Controller annotations and in this comprehensive article we are going to take an in-depth look at the difference between the two most frequently used annotations in Spring MVC. It provides two commonly used annotations, namely @RequestParam and @PathVariable, which play a significant role in parameter handling within web applications.

Differences between OAuth 2.0 and JWT (JSON Web Token)

Hello guys, both OAuth 2.0 and JWT (JSON Web Tokens) are two widely used authentication and authorization protocols in modern web applications. While both serve similar purposes, there are some key differences between the two that are important to understand, which we will see in this article. This is also an important interview question and if you are preparing for Java and Microservices developer interviews, it's better to know how this two technology works and what are the key differences between then. In short, OAuth 2.0 is primarily used for authorization, whereas JWT is primarily used for authentication. OAuth 2.0 uses access tokens, whereas JWT is a self-contained token. OAuth 2.0 has a complex authorization flow, whereas JWT has a simple flow. OAuth 2.0 provides better security as it reduces the risk of unauthorized access to protected resources, while JWT can be intercepted if not properly secured. OAuth 2.0 access tokens are short-lived and need to be refreshed periodically, whereas JWTs do not expire.

3 Ways to return different content types from Spring MVC Controller? @RequestMapping and ResponseEntity Example Tutorial

Hello guys, if you want to provide different types from a Controller in Spring MVC and wondering how to do that then you have come to the right place. In the past, I have shared the free Spring MVC courses, books, and interview questions and in this article, I am going to show you three ways to send different content types from Spring Controller. There are various content types for a controller and we are going to discuss them in this tutorial. So we are going to discuss how to interpret the data present in the request and response. JSON is one of the media formats that may be consumed/produced using this request-response architecture.

Difference between @RequestParam vs @RequestBody in Spring MVC? (with Example)

Hello everyone, in this article, we are going to look at an interesting topic from the Java Spring framework and the topic is, to find the difference between @RequestBody and @RequestParam. If you don't know this is one of the frequently asked Spring MVC interview question and also two of the most used annotation when creating backend of a Java web application in Spring Framework. Earlier, I have explained difference between @RequestBody and @ResponseBody in Spring MVC and REST APIs, and in this article, I am going to tell you the difference between @RequestBody and @RequestParam annotation in Spring Framework. It is worth noting that these two annotations are frequently used in Spring Boot REST API.

10 Examples of RestTemplate in Spring Framework

Hello guys, if you are wondering how to send GET and POST request to your API or Web Service from a Java based Spring Framework then you would be glad to know that You can use use RestTemplate class from Spring Framework. It's a fully functional HTTP client which is really really useful in this age of API. I have used RestTemplate to consume JSON from API before as well as sending different kind of request like POST, PUT, DELETE and PATCH to any REST API. For example, in this article, I shared how to send POST request using RestTemplate and how to set header on HTTP request using RestTemplate. Yes, RestTemplate also allow you to send headers like Authorization on Http Request.

What is @Component annotation in Spring? What does it do?

Hello guys, One of the main reason many people use Spring Framework is Dependency injection and auto-wiring, which means you don't need to write code to create and inject dependency, Spring will do it for you. But does it do it and how @Component annotation helps? Well, In Spring, the @Component annotation is used to mark a class as a Spring bean that should be managed by Spring's Inversion of Control (IoC) container. When a class is annotated with @Component, Spring automatically scans for such components during application startup and creates instances of these components that can be used for dependency injection. The @Component annotation is the foundation for other stereotype annotations in Spring, such as @Service, @Repository, and @Controller, which are specializations of @Component. These annotations are used to further specify the role and purpose of a component in a Spring application.

How to fix "not a managed type exception" in JPA? [Solution]

Hello folks, JPA (Java Persistence API) is a widely used technology in Java applications for object-relational mapping (ORM) and working with databases. However, when using JPA, you may encounter the "not a managed type" exception, which is a common error that occurs when JPA fails to recognize an entity class as a managed type. This exception can occur due to various reasons, such as incorrect package or class names, missing annotations, or misconfiguration of JPA settings. Fixing this error requires identifying the root cause and taking appropriate steps to resolve it. In this article, we will explore different strategies and solutions to fix the "not a managed type" exception in JPA, helping you overcome this hurdle and successfully work with JPA in your Java applications.

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