Amigoscode

Yesterday I had the pleasure to meet Josh Long. An expert in Java and Spring Framework. We are cooking some content for you. Stay tuned. #java #javadevelopers #springframework

Top System Design Building Block: 1. Distributed Messaging Queues: Facilitate efficient communication between system components. 2. DNS (Domain Name System): Translates domain names into IP addresses for locating web servers. 3. Load Balancer: Distributes web traffic across servers for optimal resource utilization. 4. Distributed Caching: Stores frequently used data efficiently, reducing database load. 5. Database: Organizes and retrieves data for various applications. 6. Distributed Task Scheduler: Efficiently assigns tasks across system components. 7. Observability: Provides insights into system performance for issue identification. 8. Unstructured Data Storage: Accommodates diverse data types with flexibility. 9. Scaling Services: Expands system capacity to handle increased traffic and demand. 10. Publish-Subscribe Model: Enables communication between system parts without direct connections. 11. Unique ID Generator: Creates distinct identifiers for data integrity and uniqueness. 12. Rate-Limiting: Controls request flow to maintain system stability. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

A REST API (Representational State Transfer Application Programming Interface) is a set of rules and conventions for building and interacting with web services that use standard HTTP methods (GET, POST, PUT, DELETE) and adhere to stateless communication principles. Here's a simplified explanation of how a REST API for a LinkedIn post might work: 1. Authentication: - Developers need to authenticate themselves using OAuth 2.0 or another authentication mechanism to access LinkedIn's API on behalf of a user. 2. Endpoint for Creating a Post: - `POST /v2/shares`: This endpoint is used to create a new post on LinkedIn. The request body typically contains the content of the post, including text, images, and other relevant details. 3. Endpoint for Retrieving Post Details: - `GET /v2/shares/{post-id}`: This endpoint allows developers to retrieve details about a specific post by providing its unique identifier (post-id). 4. Endpoint for Updating a Post: - `PUT /v2/shares/{post-id}`: Developers can use this endpoint to update the content of an existing post. The request body would include the modified content. 5. Endpoint for Deleting a Post: - `DELETE /v2/shares/{post-id}`: To remove a post from LinkedIn, developers can send a DELETE request to this endpoint, specifying the post's unique identifier. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

12 Design Patterns You Must Know - Factory - Observer - Singleton - Builder - Adapter - Decorator - Proxy - Strategy - Command - Template - Iterator - State Which one do you use the most? 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

6 API Architecture Styles You Must Know REST: Representational State Transfer, a web architectural style for designing networked applications with a stateless communication model. GraphQL: A query language and runtime for APIs, enabling clients to request only the data they need. WebSocket: A communication protocol providing full-duplex communication channels over a single TCP connection, ideal for real-time applications. gRPC: A high-performance, open-source RPC (Remote Procedure Call) framework that uses HTTP/2 for transport and Protocol Buffers as the interface definition language. MQTT: Message Queuing Telemetry Transport, a lightweight messaging protocol for small sensors and mobile devices, ideal for low-bandwidth, high-latency, or unreliable networks. Serverless: A cloud computing model where cloud providers automatically manage the infrastructure, allowing developers to focus solely on writing code without worrying about server provisioning or maintenance. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

9 Types of API Testing You Should Know 1. Security Testing 🛡️: Identifies vulnerabilities in a system to ensure data and resources are protected from unauthorized access or malicious activities. 2. Validation Testing ✅: Ensures that the product meets specified requirements and functions correctly within its intended environment. 3. UI Testing 🖥️: Focuses on the user interface to validate its usability, responsiveness, and overall user experience. 4. Functional Testing ⚙️: Verifies that each function of the software application operates in conformance with the requirement specifications. 5. Error Testing ❌: Evaluates how well the system handles errors, ensuring graceful degradation and user-friendly error messages. 6. Penetration Testing 🕵️: Simulates real-world cyber-attacks to assess the security of a system, identifying and addressing vulnerabilities. 7. Interoperability Testing 🔄: Checks the compatibility of a software system with external interfaces, ensuring seamless communication with other systems. 8. Load Testing 🔄: Assesses the system's performance under expected and peak load conditions, ensuring it can handle the anticipated user traffic. 9. Fuzz Testing 🌀: Involves inputting random or unexpected data to detect vulnerabilities and weaknesses in a software application. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

Your Java Roadmap for 2024 YT Video - https://lnkd.in/eEjFPjHq 1. Linux 2. Git 3. IDE 4. Core Collections 5. Advanced 6. Exception Handling 7. Streams and Functional Programming 8. Testing 9. Databases 10. Clean Code 11. Logging 12. Multi-Threading 13. Build Tools 14. HTTP 15. Frameworks 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #java #coding #interviewtips

18 Most common used Java List methods 1. add(E element) - Adds the specified element to the end of the list. 2. addAll(Collection<? extends E> c) - Adds all elements of the specified collection to the end of the list. 3. remove(Object o) - Removes the first occurrence of the specified element from the list. 4. remove(int index) - Removes the element at the specified position in the list. 5. get(int index) - Returns the element at the specified position in the list. 6. set(int index, E element) - Replaces the element at the specified position in the list with the specified element. 7. indexOf(Object o) - Returns the index of the first occurrence of the specified element in the list. 8. contains(Object o) - Returns true if the list contains the specified element. 9. size() - Returns the number of elements in the list. 10. isEmpty() - Returns true if the list contains no elements. 11. clear() - Removes all elements from the list. 12. toArray() - Returns an array containing all the elements in the list. 13. subList(int fromIndex, int toIndex) - Returns a view of the portion of the list between the specified fromIndex, inclusive, and toIndex, exclusive. 14. addAll(int index, Collection<? extends E> c) - Inserts all elements of the specified collection into the list, starting at the specified position. 15. iterator() - Returns an iterator over the elements in the list. 16. sort(Comparator<? super E> c) - Sorts the elements of the list according to the specified comparator. 17. replaceAll(UnaryOperator<E> operator) - Replaces each element of the list with the result of applying the given operator. 18. forEach(Consumer<? super E> action) - Performs the given action for each element of the list until all elements have been processed or the action throws an exception. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

Git Rebase Explained 1. Git rebase offers a refined approach to integrating branch changes by rewriting commit history. 2. Unlike merging, which retains the original history, rebase creates a linear sequence of commits, enhancing project clarity. 3. This method streamlines collaboration and aids conflict resolution during changes integration. 4. Caution is advised in shared repositories to avoid disruption and confusion among contributors. 5. Effective communication is key in leveraging the benefits of rebase while minimizing potential drawbacks. 👍🏿 Subscribe to our newsletter - https://bit.ly/45ucZPf #systemdesign #coding #interviewtips

9 Most Used java Data Structures