💻 Welcome to Amigoscode 💻
In 2010, Nelson started uploading YouTube videos while he was studying at university to help other students struggling with their coding experience. 10 years later, Nelson has amassed over 500k+ subscribers, with over 28+ million views. Nelson is one
❗️Java vs. Python❗️
➡️ Python and Java are both popular and powerful programming languages, each with its own unique strengths. Python is known for its simplicity and readability, making it an excellent choice for beginners and rapid development. Its concise syntax allows
6 API Architectural designs You Must Know
1. REST 🌐
Representational State Transfer - REST is like a classic library where you request specific books and receive them as they are. It's simple and widely used for web APIs, like ordering a la carte from a menu 🍽️.
2. GraphQL
6️⃣ Popular API Architecture Styles
1. gRPC: A high-performance, language-agnostic remote procedure call (RPC) framework for efficient communication between distributed systems, often used in microservices architectures.
2. SOAP: A protocol for exchanging structured information
Software architectural patterns are reusable solutions to commonly occurring design problems in software architecture that provide a structured way to organize and design a software system to achieve specific qualities such as flexibility, scalability, and maintainability.
1.
6 API Architectural designs You Must Know
1. REST 🌐
Representational State Transfer - REST is like a classic library where you request specific books and receive them as they are. It's simple and widely used for web APIs, like ordering a la carte from a menu 🍽️.
2. GraphQL 🚀
JWT Explained to a 5 Year Old
📦 Imagine you have a 🔒 magic box that can store secret messages. The only way to open this box and read the message inside is with a 🔑 special key.
Now, let's say you want to send a message to your friend, but you don't want anyone else to
12 Design Patterns You Must Know
1. Factory Pattern 🏭
Imagine a factory that produces different products. Similarly, this pattern creates objects without specifying their exact class, making code flexible and easy to extend. 🧩
2. Observer Pattern 🔍
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8 Essential Internet Protocols You Must Know
▷ HTTP (Hypertext Transfer Protocol) is a standard for transmitting web content over the internet.
▷ HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that encrypts data for safe web communication.
▷ TCP
Monolithic VS Microservices Architecture. Which one are you using? 🤔
In the realm of software architecture, the choice between Monolithic and Microservices can shape the destiny of your application. Let's break down the key differences in a nutshell! 🧩
1. Monolithic
7 Popular Network Protocols
1- HTTPS: Secure version of HTTP, used for secure communication over a computer network.
2 - Web Socket: Provides full-duplex communication channels over a single TCP connection.
3 - TCP: Provides reliable, ordered, and error-checked delivery of a
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?
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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
JWT Explained
1. JSON Format: JWTs are represented as JSON objects, making them easy to read by both humans and machines. They consist of three parts separated by dots (`.`): the Header, the Payload, and the Signature.
- Header: The Header typically consists of two parts: the
6️⃣ Popular API Architecture Styles You Must Know
1. gRPC: A high-performance, language-agnostic remote procedure call (RPC) framework for efficient communication between distributed systems, often used in microservices architectures.
2. SOAP: A protocol for exchanging
DevOps Engineer Roadmap:
➡️ Learn a Programming Language: Start by mastering a programming language such as Python, Go, or others. This will empower you to write efficient automation scripts for various tasks.
➡️ Master Operating System and CLI: Gain expertise in managing and
🔎 What is Redis?
Redis is an in-memory data structure store that can be used as a database, cache, and message broker. It's open-source and has gained popularity for its speed, versatility, and scalability.
Credit: Architecture notes
#redis
#databases
7 SQL Joins You Must Know
➡️ Inner Join: Retrieves records with matching values in both tables.
➡️ Left Join: Retrieves all records from the left table and matching records from the right table.
➡️ Left Join with Null Check: Filters only the records where there is no match in
You need to learn CI/CD
CI stands for Continuous Integration, which is like a team of superheroes working together to ensure that code changes smoothly blend into the main codebase. 🦸♂️💻
CD, on the other hand, stands for Continuous Deployment or Continuous Delivery, where we
📚10 Microservices Patterns 📚
1. 🔍 Service Registry: This pattern involves managing the locations of services in a distributed system. It maintains a list of all available services and their locations, which can be queried by other services to find and communicate with them.
Top Kafka Use Cases
1️⃣ Data Streaming: Kafka enables real-time data streaming, allowing you to process and analyze data as it flows, ensuring your applications stay up-to-date with the latest information! 🌊💡
2️⃣ Log Aggregation: Say goodbye to scattered logs! With Kafka, you
📚 Object-Oriented Programming (OOPs) Concept in Java 📚
🧩 Encapsulation:
🔒 Encapsulation wraps data (attributes) and methods (functions) into a single unit, known as a class. Private and public access modifiers dictate the visibility and interaction with the inner workings of
Java List Methods Cheatsheet. Which is your favourite?
In Java, you can work with lists using the java.util.List interface, which is implemented by various classes like ArrayList, LinkedList, and others. Here's a list of some of the most common methods you can use with Java
You need to Learn API Testing Now
1. 𝗩𝗮𝗹𝗶𝗱𝗮𝘁𝗶𝗼𝗻 testing ensures that an API functions correctly and meets its specified requirements. It involves verifying the API's response to different inputs, checking error handling, and validating data formats.
2.
The OSI (Open Systems Interconnection) model is a conceptual framework that helps to understand how network protocols work and communicate with each other. It consists of seven layers, each with its own specific functions and responsibilities. Let's explore them with the help of
6 Database Types You Must Know
1. Relational Database 💼
- Data Model: Organizes data into tables with rows and columns.
- Examples: MySQL, PostgreSQL, Oracle, SQL Server.
- Key Features: ACID compliance, strong data consistency, structured data storage, support for SQL
𝐀𝐏𝐈 𝐆𝐚𝐭𝐞𝐰𝐚𝐲 𝐄𝐱𝐩𝐥𝐚𝐢𝐧𝐞𝐝
👉 An API Gateway is a powerful tool that acts as the entry point for all client requests to your system's APIs. It provides a single endpoint for clients to access multiple APIs, simplifying the client-server communication process. 🌐💬
10 Graph Algorithms You Must Know
Graph algorithms are computational procedures designed to analyze and manipulate graph structures, facilitating tasks such as pathfinding, connectivity analysis, and optimization in various applications like network routing and social network
Microservices Roadmap 🚀
- Databases: Data storage systems for efficient data retrieval and management.
- Cloud: On-demand access to computing resources and services over the internet.
- Monitoring: Continuous observation and analysis of system performance and behavior.
-
5 books for Software Engineers
1. Clean Architecture (Martin)
2. Building Microservices (Newman)
3. Unit Testing (Khorikov)
4. Domain Driven Design (Evans)
5. Head First Design Patterns (Freeman & Robson) What is your favourite? Comment bellow.
Image creds
@julioc
👍🏿
JS Developers, today, let's dive into the fascinating world of the JavaScript event loop and asynchronous programming! 🌐
🔄 Ever wondered how JavaScript handles multiple tasks simultaneously? That's where the event loop comes into play. 🎢
🔁 At its core, the event loop is a
Java Roadmap For Beginners
Java is a popular, versatile, and widely-used programming language that's known for its simplicity, platform independence, and the ability to write code once and run it on multiple platforms.
Here's what you might encounter when learning Java as a
Pass by Value vs Reference Explained to a 5 Year Old
Pass by Value: Imagine you have a delicious cup of coffee ☕️, and you want to share it with your friend. When you pass the coffee "by value," you pour some coffee into another cup and give that cup to your friend. You keep
Apache Kafka Top Uses
- Data Streaming
- Log Aggregation
- Message Queuing
- Web Activity Tracker
- Data Replication
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Image creds to Brij kishore Pandey
#apachekafka
#systemdesign
18 Most Used Linux Commands you must know
ls - List files and directories in the current directory.
mv - Move or rename files and directories.
ssh - Secure Shell, used to connect to remote servers securely.
cd - Change the current working directory.
cat - Concatenate and display
Uber's tech stack is a complex and ever-evolving ecosystem, here are some of the key technologies that power the company:
🐍 **Languages:** Python, Node.js, Go, and Java are the primary languages used by Uber's engineers.
🔧 **Frameworks:** Uber uses a variety of frameworks,
8 Essential Internet Protocols You Must Know
▷ HTTP (Hypertext Transfer Protocol) is a standard for transmitting web content over the internet.
▷ HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that encrypts data for safe web communication.
▷ TCP
Netflix Spring Boot Architecture
📺🌐 Netflix Architecture: Powering Seamless Streaming at Scale! 🚀🔥
Netflix, the global entertainment giant, has revolutionized the way we consume media. Let's take a glimpse into their architecture, fueling a seamless streaming experience for
Here’s description of 9 types of API testing:
➡️ 1. Unit Testing: Involves testing individual components or functions of an API in isolation to ensure they function correctly and produce the expected output.
➡️ 2. Functional Testing: Focuses on testing the overall functionality
What is Kafka?
Kafka is an open-source, distributed event streaming platform that serves as the central nervous system for data in modern enterprises. It's designed to handle real-time data feeds, process them efficiently, and make them available for a variety of applications in
6 Popular API Architecture Styles you MUST KNOW
gRPC: Stands for "Google Remote Procedure Call." It is an open-source remote procedure call (RPC) framework developed by Google. gRPC uses HTTP/2 for transport, Protocol Buffers as the interface description language, and provides
Here's how JWT works in a nutshell:
1️⃣ Authentication: When a user logs in to your application, the server generates a JWT containing relevant user information. This token is then sent back to the client, where it's stored securely, typically in local storage or a cookie.
2️⃣
🌐 Decoding JWT (JSON Web Tokens) 🗝️
JWTs are compact data formats used for secure information exchange. They consist of three parts: Header, Payload, and Signature.
🔑 Format:
- Header: Describes the token (encoded JSON).
- Payload: Contains claims (encoded).
- Signature:
Here are some common microservices patterns:
▶️ API Gateway Pattern: This pattern involves having a single entry point for all client requests, which then routes those requests to the appropriate microservice.
▶️ Circuit Breaker Pattern: This pattern is used to handle failures
Apache Kafka, the open-source distributed event streaming platform, is a powerhouse for real-time data processing. Here are some key applications that showcase its versatility:
1️⃣ Publish-Subscribe:
Kafka excels at enabling a publish-subscribe model, allowing seamless
6 Must-Know Software Architectural Patterns
Event-Driven Architecture:
Decoupled Components and Asynchronous Communication.
Application: Ideal for systems where events trigger actions, fostering scalability and responsiveness.
Layered Architecture:
Hierarchical Structure with
▷ 12 Microservices Best Practices
- Single Responsibly
- Containers
- Orchestration
- Resilience and Fault Tolerance
- Scalability
- CI/CD
- Observability
- Security
- API Gateway
- Stateless
- DB per Service
- Even Driven Architecture
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🔵 REST vs 🟣 GraphQL
🔵 REST:
👉 Stands for Representational State Transfer
👉 Well-established and widely adopted
👉 Uses predefined endpoints for data retrieval
👉 Great for simple, stateless operations
🟣 GraphQL:
👉 A modern query language for APIs
👉 Allows clients to
🌐 RESTful API Simplified 🚀
RESTful API stands for Representational State Transfer API. 🔄 It's like a 🗂️ file cabinet for data on the internet! 🌐
🔗 REST uses standard HTTP methods like GET, POST, PUT, DELETE to interact with data.
✅ GET: 📥 Fetch data (Read)
✏️ POST: 📝
DevOps is a set of practices that combines software development and IT operations. It aims to shorten the software development life cycle and provide continuous delivery with high software quality. 🚀
DevOps has several phases
Plan: This phase involves defining the goals,
🐧✨ Essential Linux Commands Every User Should Know! ✨🐧
1️⃣ ls: This nifty command lets you list the contents of a directory. Want to explore what's inside? Just type "ls" and hit Enter! 📂👀
2️⃣ cd: The "cd" command allows you to navigate through directories. Move forward,
Prod Software Release
1. Planning:
- Identify the goals and features for the upcoming release.
- Prioritize tasks based on importance and dependencies.
- Define timelines and allocate resources accordingly.
2. Development:
- Programmers start coding based on the planned
Mastering Microservices with Spring:
API Gateway:
- Central entry point for managing API calls.
- Streamlines communication, enhances security.
Circuit Breaker and Config Dashboard:
- Ensures system stability, provides real
-time insights.
- Centralized configuration dashboard.
6 Popular API Architectural Styles You Must Know
- REST
- GRPC
- SOAP
- Web Sockets
- GraphQL
- Webhook
Which ones are you using?
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❗️Linux 🐧 - A free and open-source operating system based on Unix❗️
Git 💾 - A distributed version control system for managing code changes.
Java 💻 - Object-oriented programming language for developing enterprise applications.
Testing 🔬 - The process of evaluating a system
📘 Top 12 Git Commands Cheatsheet
git init - Initialize a new Git repository.
git clone - Clone a remote repository to your local machine.
git status - Check the current state of your working directory.
git add - Stage changes for the next commit.
git commit - Record staged
Linux File Permissions Explained to a 5 year old 😁
Imagine your toy box 🧸📦 in your room – it's like a little computer!
🔒👀 Now, think of each toy as a file 📄 or a picture 🖼️ on your computer. These toys/files have three special locks:
1. Owner lock 👑🔐: Only the person
Here is a React Developer Roadmap
📚 Learn core concepts, state management, and advanced topics.
🔧 Master essential tools like Redux and React Router.
🌐 Build real-world projects for your portfolio.
⚙️ Integrate React with back-end technologies.
📦 Deploy your apps and share
▷ 12 Microservices Best Practices
- Single Responsibly
- Containers
- Orchestration
- Resilience and Fault Tolerance
- Scalability
- CI/CD
- Observability
- Security
- API Gateway
- Stateless
- DB per Service
- Even Driven Architecture
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🔵 REST vs 🟣 GraphQL
🔵 REST:
👉 Stands for Representational State Transfer
👉 Well-established and widely adopted
👉 Uses predefined endpoints for data retrieval
👉 Great for simple, stateless operations
🟣 GraphQL:
👉 A modern query language for APIs
👉 Allows clients to
How Git Works - From Working Directory to Remote Repository
[1]. Working Directory:
Your project starts here. The working directory is where you actively make changes to your files.
[2]. Staging Area (Index):
After modifying files, use git add to stage changes. This prepares
CI/CD example for API written in Java/Spring Boot.
👉 CI/CD stands for Continuous Integration/Continuous Deployment. It is a software development process that involves automating the building, testing, and deployment of code changes.
🏭 The CI/CD pipeline can be thought of as a
12 Design Patterns You Must Know
1. Factory Pattern 🏭
Imagine a factory that produces different products. Similarly, this pattern creates objects without specifying their exact class, making code flexible and easy to extend. 🧩
2. Observer Pattern 🔍
Like subscribing to
The 12 Factor App is a methodology for building scalable and maintainable web applications. It provides a set of guidelines for developing modern, cloud-native, and containerized applications. Here are the 12 factors explained in bullet points:
1. Codebase:
- One codebase per
❗️DevOps as a Burger (DaaB)❗️
1. Acquire proficiency in at least one programming language (e.g., Python, Go) to write automation scripts.
2. Master operating systems (e.g., Linux) and their command-line interface (CLI).
3. Become adept at managing web servers, including
🔟 Architectural Patterns
An architectural pattern is a general, reusable solution to a commonly occurring problem in software architecture within a given context. Architectural patterns are similar to software design pattern but have a broader scope.
- Layered pattern
-
18 most used Linux commands YOU MUST KNOW
- ls
- mv
- ssh
- cd
- cat
- sudo
- pwd
- grep
- top
-mkdir
- find
- wget
- rm
- chmod
- tar
- cp
- chwon
- gzip
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12 ESSENTIAL Network Protocols:
1. HTTP (Hypertext Transfer Protocol):
Web Communication: Enables browser-server interaction, suitable for unsecured data transfer.
2. HTTPS (Hypertext Transfer Protocol Secure):
Secure Web Communication: Ensures confidentiality through SSL/TLS
NoSQL vs SQL
NoSQL databases provide flexible data models ideal for diverse data structures and scalability.
1. Key-Value: Simple, uses key-value pairs (e.g., Redis).
2. Document: Stores data in JSON/BSON documents (e.g., MongoDB).
3. Graph: Manages complex relationships with
Types of Databases.
Relational Database:
Organizes data into tables with rows and columns, ensuring strong data integrity. Commonly uses SQL for querying.
Document Database:
Stores and retrieves data in flexible, JSON-like documents. Ideal for handling diverse data structures
DevOps Explained!
Plan:
- Defines project goals, scope, and requirements, identifying stakeholders and resources. 📝
Build:
- Involves coding, compiling, and packaging, emphasizing version control and code management. 🔧
Test:
- Ensures software aligns with quality and
Public Static Void Main(String[] args) Explained.
▷ public: An access modifier keyword that indicates the class (MainClass) is accessible from outside the package.
▷ class: A keyword used to declare a class in Java.
MainClass: The name of the class. It follows the naming
Software Development Process and Tools Overview
1. Idea Conception: The initial phase where the concept for a software project is conceived and outlined.
2. Requirements Gathering: Involves collecting and documenting the functional and non-functional requirements for the