Kunal Singh @kunalsinghreal
Java Developer by Profession |🇮🇳Simple Living High Thinking🇮🇳| Siwan, Bihar, India Joined June 2020-
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Sample Java/Spring Boot application for implementing RBAC - Role Based Access Control github.com/kunalkumar0024… #Java #springboot
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Kunal Singh retweeted
Have you ever thought why gRPC calls are way faster than the REST call? Let's find it together. I am providing here a GitHub link to test communication between #grpc server and #grpc client using #Java ,#SpringBoot, #Java8. Comments and feedback are appreciated.#LetsConnect 👇
Kunal Singh retweeted
13 Software Design Principles Every Developer Should Know: 1. 𝐊𝐈𝐒𝐒 (𝐊𝐞𝐞𝐩 𝐈𝐭 𝐒𝐢𝐦𝐩𝐥𝐞, 𝐒𝐭𝐮𝐩𝐢𝐝): Design solutions as simply as possible. Avoid unnecessary complexity. 2. 𝐃𝐑𝐘 (𝐃𝐨𝐧'𝐭 𝐑𝐞𝐩𝐞𝐚𝐭 𝐘𝐨𝐮𝐫𝐬𝐞𝐥𝐟): Eliminate duplicate code. Centralize…
Kunal Singh retweeted
10 Best Design Patterns for Developers 1. Strategy 2. Decorator 3. Adapter 4. Observer 5. Builder 6. DAO 7. Command 8. Composite 9. State 10.Factory 11. Template 12. Proxy learn more on Grokking Microservices Design Patterns designgurus.io/course/grokkin…
Kunal Singh retweeted
5 examples of the Factory Pattern used in the JDK: 1. java.util.Calendar The Calendar class uses a factory method to create instances. Calendar calendar = Calendar.getInstance(); The getInstance() method hides the implementation details and returns a suitable Calendar…
Kunal Singh retweeted
Time and Space Complexities of Popular Sorting Algorithms: 1. 𝐒𝐞𝐥𝐞𝐜𝐭𝐢𝐨𝐧 𝐒𝐨𝐫𝐭 - Time: Best Ω(n²) | Average Θ(n²) | Worst O(n²) - Space: O(1) 2. 𝐈𝐧𝐬𝐞𝐫𝐭𝐢𝐨𝐧 𝐒𝐨𝐫𝐭 - Time: Best Ω(n) | Average Θ(n²) | Worst O(n²) - Space: O(1) 3. 𝐁𝐮𝐛𝐛𝐥𝐞 𝐒𝐨𝐫𝐭 -…
Kunal Singh retweeted
Circuit Breaker Pattern Explained: The circuit breaker pattern is a fundamental design strategy to bolster system resilience and prevent disruptions. Inspired by electrical circuit breakers, this technique is a proactive safeguard to prevent system overloads and ensure…
Kunal Singh retweeted
How is data sent over the network? Why do we need so many layers in the OSI model? The diagram below shows how data is encapsulated and de-encapsulated when transmitting over the network. 🔹 Step 1: When Device A sends data to Device B over the network via the HTTP protocol, it…
Kunal Singh retweeted
Top 6 Multithreading Design Patterns You Must Know
Kunal Singh retweeted
Here is a step-by-step process to pick apart any low-level design question. A post based on your experience level. ----- 𝑆𝐷𝐸 1+ ----- 𝟏. 𝐒𝐂𝐎𝐏𝐄 𝐓𝐇𝐄 𝐏𝐑𝐎𝐁𝐋𝐄𝐌 As you speak with the interviewer, you may list 5-10 requirements for the question. You cannot…
Kunal Singh retweeted
As a senior Java developer, Don't just stay on core java , please stay updated and learn : 1. Cloud-native development, including microservices, serverless computing (AWS Lambda, Azure Functions), and tools like Kubernetes, Istio, and Helm. 2. Reactive programming using…
Kunal Singh retweeted
Simple explanations for SQL Joins.
Kunal Singh retweeted
What API limits (quick overview)
Kunal Singh retweeted
API Arch Style 🔥🔥
Kunal Singh retweeted
Top 10 Design Patterns for Developers 1. Strategy 2. Decorator 3. Adapter 4. Observer 5. Builder 6. DAO 7. Command 8. Composite 9. State 10.Factory 11. Template 12. Proxy learn more on Grokking Microservices Design Patterns designgurus.io/course/grokkin…
Kunal Singh retweeted
My newsletter recently crossed 50,000 subscribers. Here are the 10 most-read articles: 1. LeetCode was HARD until I Learned these 15 Patterns: blog.algomaster.io/p/15-leetcode-… 2. How I Mastered Data Structures and Algorithms: blog.algomaster.io/p/how-i-master… 3. System Design: What is…
Kunal Singh retweeted
SQL JOINS - quick sheet
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