Essential Terms Every Full Stack Developer (3+ Years Experience) Must Know
As a Full Stack Developer with 3+ years of experience, mastering key technical terms is crucial for career growth and cracking interviews. This guide covers essential concepts in Java, Spring Boot, Microservices, Frontend Development, Databases, DevOps, Cloud, and System Design to help you stay ahead in the industry. Whether you’re preparing for interviews or enhancing your expertise, these terms will boost your knowledge and confidence.
Core Java
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OOP Concepts (Inheritance, Polymorphism, Encapsulation, Abstraction)
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Collections Framework (List, Set, Map, etc.)
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Exception Handling
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Multithreading & Concurrency
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JVM Architecture (Heap, Stack, Garbage Collection)
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Functional Programming (Streams, Lambda Expressions)
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Java 8+ Features (Optional, Method References, Date-Time API)
Backend Development
1. Spring Framework
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Spring Core (IOC, DI)
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Spring Boot
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Spring MVC
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Spring Data JPA / Hibernate
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Spring Security (JWT, OAuth2)
2. Microservices
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REST APIs
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Feign Client
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Eureka, API Gateway
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Circuit Breaker (Resilience4j, Hystrix)
3. Database Management
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SQL (MySQL, PostgreSQL)
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NoSQL (MongoDB, Redis)
4. API Development & Documentation
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REST
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Swagger/OpenAPI
5. Message Queues
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Apache Kafka
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RabbitMQ
Frontend Development
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HTML, CSS, JavaScript
- Frontend Frameworks
- Angular
- React.js
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State Management (Redux, Context API in React, NgRx in Angular)
- AJAX, Fetch API, and Axios
DevOps & Deployment
1. Version Control Systems
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Git
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GitHub/GitLab/Bitbucket
2. Build Tools
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Maven
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Gradle
3. Continuous Integration/Continuous Deployment (CI/CD)
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Jenkins
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GitHub Actions
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Docker
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Kubernetes
4. Cloud Platforms
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AWS (EC2, S3, RDS)
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GCP / Azure
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Heroku
Testing
1. Unit Testing
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JUnit
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Mockito
2. Integration Testing
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Spring Test
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Testcontainers
3. UI Testing
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Selenium
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Cypress
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Protractor
Other Concepts
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Data Structures and Algorithms (Array, LinkedList, Trees, Graphs, etc.)
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Design Patterns (Singleton, Factory, Builder, etc.)
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Caching Mechanisms (Ehcache, Redis)
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Authentication & Authorization (JWT, OAuth2)
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Logging (SLF4J, Logback)
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API Rate Limiting (Bucket4j, API Gateway features)
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Debugging Tools (Postman, Browser DevTools)
Soft Skills
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Problem-Solving Abilities
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Code Review & Collaboration (via Git)
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Agile Methodologies (Scrum, Kanban)
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Communication Skills