Index

Angular

Angular Performance Optimization Tips (June 27, 2025)
Angular Version-wise Feature Summary (April 5, 2025)
Angular Interview Questions and Answers (January 19, 2025)
Angular Universal (SSR) Interview Questions with Answers, Examples, and Steps to Implement (January 19, 2025)
Security in Angular: Detailed Questions and Answers (January 19, 2025)
Angular Performance Optimization: Detailed Q&A with Examples (January 19, 2025)
Testing in Angular: Comprehensive Guide (January 19, 2025)
Angular Observables and RxJS (January 19, 2025)
Angular Pipes: Questions and Detailed Answers (January 19, 2025)
Forms in Angular: Detailed Explanation and Examples (January 19, 2025)
Angular Routing and Navigation: Questions and Detailed Answers (January 19, 2025)
Angular Directives: Questions with Detailed Explanations, Examples, and Steps to Implement (January 19, 2025)
Angular Services and Dependency Injection (January 19, 2025)
Angular Components and Templates: Detailed Overview (January 19, 2025)
Basic Angular Concepts: In-Depth Overview (January 19, 2025)
Angular Interview Questions (January 19, 2025)

Database

Normalization and Denormalization (March 12, 2025)
Database Design for Parking (March 12, 2025)
Database PIVOT and Implementation Across Multiple Databases (March 8, 2025)
ACID and CAP Theorem in Databases for System Design (March 4, 2025)
Execution Plan Analysis and Optimization (February 8, 2025)
SQL Queries for Interview (February 1, 2025)
SQL Tables, Views, Backups, and Interview Questions with Answers (January 19, 2025)
SQL Indexes – Comprehensive Guide (January 19, 2025)
SQL Joins – Comprehensive Guide (January 19, 2025)
SQL Comprehensive Guide (January 19, 2025)
SQL Queries for Interview (January 18, 2025)
Differences Between Views and Stored Procedures (January 18, 2025)

Design

📘 Design Pattern Interview Scenarios (Monolith & Microservices) (June 24, 2025)
Time Complexities in Java with Examples (January 21, 2025)
Trading System Design: Step-by-Step Guide (January 19, 2025)
Scalability Patterns: In-Depth Overview (January 19, 2025)
Security Patterns: In-Depth Overview (January 19, 2025)
Deployment Patterns: In-Depth Overview (January 19, 2025)
Cross-Cutting Concern Patterns: In-Depth Overview (January 19, 2025)
Observability Patterns: In-Depth Overview (January 19, 2025)
Resiliency Patterns: In-Depth Overview (January 19, 2025)
Database Patterns: In-Depth Overview (January 19, 2025)
Integration Patterns: In-Depth Overview (January 19, 2025)
Decomposition Patterns: In-Depth Overview (January 19, 2025)
Behavioral Design Patterns: In-Depth Overview (January 19, 2025)
Structural Design Patterns: In-Depth Overview (January 19, 2025)
Creational Design Patterns: In-Depth Overview (January 19, 2025)
Design Patterns : Java and Microservices (January 19, 2025)
SOLID Principles with Before/After Examples (January 18, 2025)

Docker

Docker: In-Depth Explanation, Architecture, Commands, Uses, and Examples (January 19, 2025)

DSA

Comprehensive Guide to Tree Algorithms (March 12, 2025)
Comprehensive Guide to Graph Algorithms (March 12, 2025)
Comprehensive Guide to Searching Algorithms (March 12, 2025)
Comprehensive Guide to Sorting Algorithms (March 12, 2025)
Approaches for finding pairs with a sum of 5 (March 12, 2025)
Stack & Queue (February 1, 2025)
Dynamic Programming (February 1, 2025)
Tree & Graph Problems (February 1, 2025)
String Problems (February 1, 2025)
Linked List problems (February 1, 2025)
Array Problems (February 1, 2025)
Searching Problems (February 1, 2025)
Sorting Problems (February 1, 2025)
DSA (February 1, 2025)

Java

Java Garbage Collection: Concepts, Algorithms, and Object Lifecycle (July 2, 2025)
Lead-Level Java Interview Questions and Answers (June 26, 2025)
Java 21 Features: Before vs After with Examples and Rationale (May 24, 2025)
Java Scenario Question 1 (April 21, 2025)
Password Security: Hashing vs Encryption (March 12, 2025)
Approaches for finding pairs with a sum of 5 (March 12, 2025)
Count repeated numbers in an array (March 12, 2025)
CAS (Compare-And-Swap) Functions in ConcurrentHashMap (March 5, 2025)
Java Concurrent Collections (February 8, 2025)
Internal Working of LinkedHashMap in Java (February 8, 2025)
Internal Working of ArrayDeque in Java (February 8, 2025)
Internal Working of PriorityQueue in Java (February 8, 2025)
Internal Working of TreeSet in Java (February 8, 2025)
Internal Working of LinkedHashSet in Java (February 8, 2025)
Internal Working of Vector in Java (February 8, 2025)
Internal Working of LinkedList in Java (February 8, 2025)
Internal Working of ArrayList in Java (February 8, 2025)
Internal Working of TreeMap in Java (February 8, 2025)
Internal Working of HashMap in Java (February 8, 2025)
Internal Working of HashSet in Java (February 8, 2025)
Notes on volatile in Java (January 21, 2025)
Context-Specific Deserialization Filters in Java (January 21, 2025)
Garbage Collectors in Java: An Overview (January 21, 2025)
Deprecation of SecurityManager and Alternatives (January 21, 2025)
Deprecated Thread.stop() and Alternatives (January 21, 2025)
CompletableFuture in Detail (January 21, 2025)
Java Multithreading Frameworks: Detailed Overview (January 21, 2025)
ExecutorService in Java: Overview, Functions, and Examples (January 21, 2025)
Java Coding interview Questions (January 19, 2025)
Comparable vs Comparator (January 18, 2025)
Thread: Differences between t.start() and t.run() (January 18, 2025)
Covariant Return Type (January 18, 2025)
Association vs Aggregation (January 18, 2025)
Iterator vs ListIterator (January 18, 2025)
HashMap vs WeakHashMap (January 18, 2025)
Understanding Lambda Expressions vs Method References in Java (January 18, 2025)
How to Make a Class Immutable in Java? (January 18, 2025)
Threads in Java (January 18, 2025)
Interfaces in Java (January 18, 2025)
Just-In-Time (JIT) Compilation in Java (January 18, 2025)
Java Exception Handling (January 18, 2025)
Serialization and Deserialization in Java (January 18, 2025)
JDBC in Java (January 18, 2025)
What are Servlets in Java? (January 18, 2025)
What is Multiple Inheritance? Is Multiple Inheritance Supported in Java? (January 18, 2025)
Encapsulation, Inheritance, and Polymorphism in Java (January 18, 2025)
Abstract Class vs Interface in Java (January 18, 2025)
What is difference between equals() vs == in Java (January 18, 2025)
Can We Overload and Override Static Methods in Java? (January 18, 2025)
What is the Java Collections? (January 18, 2025)
What are differences between String, StringBuffer, and StringBuilder in Java? (January 18, 2025)
What is difference between Final, Finally, and Finalize in Java? (January 18, 2025)
What are Wrapper Classes in Java (January 18, 2025)
Understanding Processes and Threads in Java (January 18, 2025)
Synchronization in Java (January 18, 2025)
What is bytecode and class loader in java? (January 18, 2025)
What is JDK, JRE, and JVM in Java (January 18, 2025)
Types of Programming Paradigms and Their Use in Java (January 18, 2025)
Why Were Default and Static Methods Introduced in Java 8? (January 18, 2025)
Why Was the Date and Time API Introduced in Java 8? (January 18, 2025)
What is Stream in Java? (January 18, 2025)
What is Lamda in java? (January 18, 2025)
Java 8 features (January 18, 2025)
Java 11 features (January 18, 2025)
Java 17 features (January 18, 2025)
Pass by Value vs Pass by Reference in Java (January 18, 2025)
Heap Memory vs Stack Memory in Java (January 18, 2025)
Inheritance Scenarios in Java (January 18, 2025)
How to create threads in java? (January 18, 2025)

Java Persistence API (JPA)

JPA Scenario for dynamic DB (July 2, 2025)
Caching in Spring Data JPA (July 2, 2025)
Spring Data JPA: Complete Guide with Examples and Diagrams (July 2, 2025)
JPA, Hibernate, and Transaction Scenarios (June 24, 2025)
JPA Scenario Questions 3 (April 21, 2025)
JPA Interview Question 2 (April 21, 2025)
JPA Scenario Questions 1 (April 21, 2025)
Java Persistence API (JPA) (March 8, 2025)
Hibernate:Basic Concepts and Features (January 19, 2025)

Kafka

Kafka Delivery Guarantees (September 26, 2025)
Kafka Replication (September 26, 2025)
Understanding ZooKeeper vs KRaft (September 26, 2025)
Kafka Consumer Scenarios (September 26, 2025)
Apache Kafka Interview Guide: Key Concepts, Comparisons, and FAQs (June 24, 2025)
Apache Kafka Interview Notes (June 24, 2025)
Apache Kafka Interview Notes with Diagrams and Examples (June 24, 2025)
Apache Kafka Architecture and Key Terminologies – Interview Notes (June 24, 2025)
Kafka Q&A (January 24, 2025)
Strategies in Apache Kafka (January 24, 2025)
Kafka Architecture, Internal Working, and Integration with Spring Boot (January 19, 2025)

Kubernetes

Kubernetes Scaling Configuration and Background (September 26, 2025)
Kubernetes: Detailed Overview with Architecture, Commands, Uses, and Examples (January 19, 2025)

Linux

Comprehensive List of Linux Commands (January 19, 2025)

Spring

Spring Security Architecture (May 5, 2026)
Distributed Transaction Management – 2 & 3PC Interview Notes (June 24, 2025)
Microservices Interview Notes: Handling Failures, Tracing, and Data Consistency (June 24, 2025)
Microservices Interview Notes: Scenario-Based Breakdown & Best Practices (June 24, 2025)
Microservices Scenario-Based Interview Notes (June 24, 2025)
Micrometer in Spring Boot 3 – Detailed Interview Notes (June 24, 2025)
REST Interview Question (April 21, 2025)
API Gateway, Service Discovery, Circuit Breaker , and Load Balancer in Microservices (March 8, 2025)
Ways to Communicate Between Microservices (March 8, 2025)
Microservices Architecture with Spring Boot 3 (March 4, 2025)
Spring Autowiring (February 8, 2025)
Notes on Bean Scopes in Spring (January 21, 2025)
Springboot Application : Mappings, Controller, Repository, Exception Handeling and H2 database (January 19, 2025)
Spring Transactions, Propagation, Isolation, and Cascade Types (January 19, 2025)
Spring Security: Concepts, Principles, and Step-by-Step Implementation (January 19, 2025)
Setting Up Multiple DataSources in Spring Boot (January 19, 2025)
Exception Handling in Spring Boot (January 19, 2025)
Spring Boot: Basic Concepts and Features (January 18, 2025)
Spring AOP (Aspect-Oriented Programming) (January 18, 2025)
Spring Framework (January 18, 2025)