Emmersive Learning
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❀4🀯1
If you want to become good at API design, learn these 20 concepts (save this now):

1 Endpoint
2 HTTP Methods
3 Request-Response
4 Status Codes
5 Authentication
6 Authorization
7 Access Tokens
8 OAuth 2.0
9 Rate Limiting
10 Throttling
11 Pagination
12 Caching
13 Idempotency
14 Webhooks
15 API Versioning
16 OpenAPI
17 REST vs GraphQL
18 API Gateway
19 Microservices
20 Error Handling

An API is a set of rules that allows different services to talk to each other.
❀6πŸ‘3
Master SQL

SQL MASTER TREE
β”‚
β”œβ”€β”€ 1. Database Fundamentals
β”‚ β”œβ”€β”€ What is DB / DBMS / RDBMS
β”‚ β”œβ”€β”€ Tables, Rows, Columns
β”‚ β”œβ”€β”€ Primary Key
β”‚ β”œβ”€β”€ Foreign Key
β”‚ β”œβ”€β”€ Candidate Key
β”‚ β”œβ”€β”€ Composite Key
β”‚ β”œβ”€β”€ Constraints
β”‚ β”‚ β”œβ”€β”€ NOT NULL
β”‚ β”‚ β”œβ”€β”€ UNIQUE
β”‚ β”‚ β”œβ”€β”€ PRIMARY KEY
β”‚ β”‚ β”œβ”€β”€ FOREIGN KEY
β”‚ β”‚ β”œβ”€β”€ CHECK
β”‚ β”‚ └── DEFAULT
β”‚ └── Data Integrity
β”‚
β”œβ”€β”€ 2. SQL Data Types
β”‚ β”œβ”€β”€ Numeric
β”‚ β”‚ β”œβ”€β”€ INT
β”‚ β”‚ β”œβ”€β”€ BIGINT
β”‚ β”‚ β”œβ”€β”€ DECIMAL
β”‚ β”‚ └── FLOAT
β”‚ β”œβ”€β”€ String
β”‚ β”‚ β”œβ”€β”€ CHAR
β”‚ β”‚ β”œβ”€β”€ VARCHAR
β”‚ β”‚ └── TEXT
β”‚ β”œβ”€β”€ Date & Time
β”‚ β”‚ β”œβ”€β”€ DATE
β”‚ β”‚ β”œβ”€β”€ TIME
β”‚ β”‚ β”œβ”€β”€ DATETIME
β”‚ β”‚ └── TIMESTAMP
β”‚ └── Boolean / Binary
β”‚
β”œβ”€β”€ 3. DDL (Data Definition Language)
β”‚ β”œβ”€β”€ CREATE
β”‚ β”‚ β”œβ”€β”€ DATABASE
β”‚ β”‚ β”œβ”€β”€ TABLE
β”‚ β”‚ └── INDEX
β”‚ β”œβ”€β”€ ALTER
β”‚ β”‚ β”œβ”€β”€ ADD COLUMN
β”‚ β”‚ β”œβ”€β”€ MODIFY COLUMN
β”‚ β”‚ └── DROP COLUMN
β”‚ β”œβ”€β”€ DROP
β”‚ β”‚ β”œβ”€β”€ DATABASE
β”‚ β”‚ └── TABLE
β”‚ └── TRUNCATE
β”‚
β”œβ”€β”€ 4. DML (Data Manipulation Language)
β”‚ β”œβ”€β”€ INSERT
β”‚ β”œβ”€β”€ UPDATE
β”‚ β”œβ”€β”€ DELETE
β”‚ └── MERGE / UPSERT
β”‚
β”œβ”€β”€ 5. DQL (Data Query Language)
β”‚ β”œβ”€β”€ SELECT
β”‚ β”œβ”€β”€ DISTINCT
β”‚ β”œβ”€β”€ WHERE
β”‚ β”‚ β”œβ”€β”€ AND
β”‚ β”‚ β”œβ”€β”€ OR
β”‚ β”‚ └── NOT
β”‚ β”œβ”€β”€ ORDER BY
β”‚ β”œβ”€β”€ GROUP BY
β”‚ β”œβ”€β”€ HAVING
β”‚ └── LIMIT / OFFSET
β”‚
β”œβ”€β”€ 6. SQL Operators
β”‚ β”œβ”€β”€ Arithmetic (+ - * /)
β”‚ β”œβ”€β”€ Comparison (= != > < >= <=)
β”‚ β”œβ”€β”€ Logical (AND OR NOT)
β”‚ β”œβ”€β”€ BETWEEN
β”‚ β”œβ”€β”€ IN
β”‚ β”œβ”€β”€ LIKE
β”‚ └── IS NULL
β”‚
β”œβ”€β”€ 7. SQL Functions
β”‚ β”œβ”€β”€ Aggregate
β”‚ β”‚ β”œβ”€β”€ COUNT
β”‚ β”‚ β”œβ”€β”€ SUM
β”‚ β”‚ β”œβ”€β”€ AVG
β”‚ β”‚ β”œβ”€β”€ MIN
β”‚ β”‚ └── MAX
β”‚ β”œβ”€β”€ String
β”‚ β”‚ β”œβ”€β”€ CONCAT
β”‚ β”‚ β”œβ”€β”€ SUBSTRING
β”‚ β”‚ β”œβ”€β”€ LENGTH
β”‚ β”‚ └── TRIM
β”‚ β”œβ”€β”€ Numeric
β”‚ β”‚ β”œβ”€β”€ ROUND
β”‚ β”‚ └── ABS
β”‚ └── Date
β”‚ β”œβ”€β”€ NOW
β”‚ β”œβ”€β”€ DATEADD
β”‚ └── DATEDIFF
β”‚
β”œβ”€β”€ 8. Joins
β”‚ β”œβ”€β”€ INNER JOIN
β”‚ β”œβ”€β”€ LEFT JOIN
β”‚ β”œβ”€β”€ RIGHT JOIN
β”‚ β”œβ”€β”€ FULL JOIN
β”‚ β”œβ”€β”€ CROSS JOIN
β”‚ └── SELF JOIN
β”‚
β”œβ”€β”€ 9. Subqueries
β”‚ β”œβ”€β”€ Scalar Subquery
β”‚ β”œβ”€β”€ Correlated Subquery
β”‚ └── Nested Subquery
β”‚
β”œβ”€β”€ 10. Views
β”‚ β”œβ”€β”€ CREATE VIEW
β”‚ β”œβ”€β”€ UPDATE VIEW
β”‚ └── MATERIALIZED VIEW
β”‚
β”œβ”€β”€ 11. Indexing
β”‚ β”œβ”€β”€ Clustered Index
β”‚ β”œβ”€β”€ Non-Clustered Index
β”‚ β”œβ”€β”€ Composite Index
β”‚ └── Index Optimization
β”‚
β”œβ”€β”€ 12. Transactions
β”‚ β”œβ”€β”€ BEGIN
β”‚ β”œβ”€β”€ COMMIT
β”‚ β”œβ”€β”€ ROLLBACK
β”‚ └── SAVEPOINT
β”‚
β”œβ”€β”€ 13. ACID Properties
β”‚ β”œβ”€β”€ Atomicity
β”‚ β”œβ”€β”€ Consistency
β”‚ β”œβ”€β”€ Isolation
β”‚ └── Durability
β”‚
β”œβ”€β”€ 14. Normalization
β”‚ β”œβ”€β”€ 1NF
β”‚ β”œβ”€β”€ 2NF
β”‚ β”œβ”€β”€ 3NF
β”‚ β”œβ”€β”€ BCNF
β”‚ └── Denormalization
β”‚
β”œβ”€β”€ 15. Advanced SQL
β”‚ β”œβ”€β”€ Stored Procedures
β”‚ β”œβ”€β”€ Triggers
β”‚ β”œβ”€β”€ CTE (WITH)
β”‚ β”œβ”€β”€ Window Functions
β”‚ β”‚ β”œβ”€β”€ ROW_NUMBER
β”‚ β”‚ β”œβ”€β”€ RANK
β”‚ β”‚ β”œβ”€β”€ DENSE_RANK
β”‚ β”‚ └── PARTITION BY
β”‚ └── Recursive Queries
β”‚
β”œβ”€β”€ 16. Performance Optimization
β”‚ β”œβ”€β”€ Query Optimization
β”‚ β”œβ”€β”€ Execution Plan
β”‚ β”œβ”€β”€ Index Tuning
β”‚ └── Query Caching
β”‚
β”œβ”€β”€ 17. SQL Ecosystem
β”‚ β”œβ”€β”€ MySQL
β”‚ β”œβ”€β”€ PostgreSQL
β”‚ β”œβ”€β”€ SQLite
β”‚ β”œβ”€β”€ SQL Server
β”‚ └── Oracle DB
β”‚
└── 18. Real-World Usage
β”œβ”€β”€ Backend APIs
β”œβ”€β”€ Data Analytics
β”œβ”€β”€ Reporting Systems
β”œβ”€β”€ ETL Pipelines
└── Data Warehousing
❀5πŸ‘1
Forwarded from Emmersive Learning (Mehammed T.)
Master Python:

The Python Tree πŸ‘‡
|
|── Basics
| β”œβ”€β”€ Variables
| β”œβ”€β”€ Data Types
| | β”œβ”€β”€ Integers
| | β”œβ”€β”€ Floats
| | β”œβ”€β”€ Strings
| | β”œβ”€β”€ Booleans
| | └── None
| |
| β”œβ”€β”€ Operators
| | β”œβ”€β”€ Arithmetic
| | β”œβ”€β”€ Comparison
| | β”œβ”€β”€ Logical
| | β”œβ”€β”€ Assignment
| | └── Identity
| |
| β”œβ”€β”€ Control Flow
| | β”œβ”€β”€ if Statements
| | β”œβ”€β”€ else Statements
| | β”œβ”€β”€ elif Statements
| | β”œβ”€β”€ while Loops
| | └── for Loops
| |
| β”œβ”€β”€ Functions
| | β”œβ”€β”€ Function Definition
| | β”œβ”€β”€ Parameters
| | β”œβ”€β”€ Return Statement
| | └── Lambda Functions
| |
| └── Built-in Functions
| β”œβ”€β”€ print()
| β”œβ”€β”€ input()
| β”œβ”€β”€ len()
| β”œβ”€β”€ range()
| └── type()
|
|── Data Structures
| β”œβ”€β”€ Lists
| | β”œβ”€β”€ Indexing and Slicing
| | β”œβ”€β”€ List Methods
| | └── List Comprehensions
| |
| β”œβ”€β”€ Tuples
| β”œβ”€β”€ Sets
| β”œβ”€β”€ Dictionaries
| | β”œβ”€β”€ Accessing and Modifying
| | β”œβ”€β”€ Dictionary Methods
| | └── Dictionary Comprehensions
| |
| └── Collections Module
| β”œβ”€β”€ Counter
| β”œβ”€β”€ defaultdict
| β”œβ”€β”€ OrderedDict
| β”œβ”€β”€ namedtuple
| └── deque
|
|── Object-Oriented Programming (OOP)
| β”œβ”€β”€ Classes and Objects
| β”œβ”€β”€ Attributes and Methods
| β”œβ”€β”€ Inheritance
| β”œβ”€β”€ Encapsulation
| └── Polymorphism
|
|── File Handling
| β”œβ”€β”€ Reading and Writing Files
| β”œβ”€β”€ Working with Text Files
| └── Working with CSV and JSON
|
|── Exception Handling
| β”œβ”€β”€ try...except Blocks
| β”œβ”€β”€ else and finally Clauses
| └── Custom Exceptions
|
|── Modules and Packages
| β”œβ”€β”€ Creating Modules
| β”œβ”€β”€ Importing Modules
| β”œβ”€β”€ Standard Library
| └── Creating Packages
|
|── Virtual Environments
| β”œβ”€β”€ venv
| β”œβ”€β”€ virtualenv
| └── pipenv
|
|── Regular Expressions
|
|── Functional Programming
| β”œβ”€β”€ Map, Filter, and Reduce
| β”œβ”€β”€ Lambda Functions
| └── List Comprehensions
|
|── Decorators
|
|── Generators
|
|── Threading and Multiprocessing
|
|── Working with APIs
| β”œβ”€β”€ HTTP Requests
| β”œβ”€β”€ JSON Parsing
| └── RESTful APIs
|
|── Web Development
| β”œβ”€β”€ Flask
| β”œβ”€β”€ Django
| └── FastAPI
|
|── Data Science and Analysis
| β”œβ”€β”€ NumPy
| β”œβ”€β”€ Pandas
| └── Matplotlib
|
|── Machine Learning
| β”œβ”€β”€ Scikit-Learn
| β”œβ”€β”€ TensorFlow
| └── PyTorch
|
|── Database Interaction
| β”œβ”€β”€ SQLite
| β”œβ”€β”€ MySQL
| └── PostgreSQL
|
|── Testing
| β”œβ”€β”€ Unit Testing (unittest)
| β”œβ”€β”€ Test Automation (pytest)
| └── Mocking
|
|── Version Control (Git)
|
|── GUI Development
| β”œβ”€β”€ Tkinter
| └── PyQt
|
|── Networking
| β”œβ”€β”€ Socket Programming
| └── Requests Library
|
|── Concurrency and Parallelism
| β”œβ”€β”€ Asyncio
| └── Multiprocessing
|
|── Debugging and Profiling
|
|── Best Practices
| β”œβ”€β”€ PEP 8
| β”œβ”€β”€ Docstrings (PEP 257)
| └── Code Reviews
|
|── Pythonic Idioms
|
|── Python Web Frameworks
| β”œβ”€β”€ Flask
| β”œβ”€β”€ Django
| └── FastAPI
|
|── Python in the Cloud
| β”œβ”€β”€ AWS Lambda
| β”œβ”€β”€ Google Cloud Functions
| └── Azure Functions
|
|── Data Serialization
| β”œβ”€β”€ JSON
| └── Pickle
|
|── Python in IoT
|
|── Jupyter Notebooks
|
|── Data Visualization
| β”œβ”€β”€ Matplotlib
| β”œβ”€β”€ Seaborn
| └── Plotly
|
|── Geographic Information System (GIS) with Python
|
|── Game Development with Python
| β”œβ”€β”€ Pygame
| └── Godot Engine
|
|── Python Community and Resources
|
|____________ END __________________


@EmmersiveLearning
❀18πŸ‘1
Master C#

C# MASTER TREE
β”‚
β”œβ”€β”€ 1. .NET & C# Fundamentals
β”‚ β”œβ”€β”€ What is C#
β”‚ β”œβ”€β”€ .NET Ecosystem (.NET, .NET Core, .NET Framework)
β”‚ β”œβ”€β”€ CLR (Common Language Runtime)
β”‚ β”œβ”€β”€ CTS / CLS
β”‚ β”œβ”€β”€ Assemblies & Metadata
β”‚ └── IL (Intermediate Language)
β”‚
β”œβ”€β”€ 2. Program Structure
β”‚ β”œβ”€β”€ Namespace
β”‚ β”œβ”€β”€ Class
β”‚ β”œβ”€β”€ Main Method
β”‚ β”œβ”€β”€ Statements
β”‚ └── Comments
β”‚
β”œβ”€β”€ 3. Data Types
β”‚ β”œβ”€β”€ Value Types
β”‚ β”‚ β”œβ”€β”€ int
β”‚ β”‚ β”œβ”€β”€ float
β”‚ β”‚ β”œβ”€β”€ double
β”‚ β”‚ β”œβ”€β”€ decimal
β”‚ β”‚ β”œβ”€β”€ bool
β”‚ β”‚ └── char
β”‚ β”œβ”€β”€ Reference Types
β”‚ β”‚ β”œβ”€β”€ string
β”‚ β”‚ β”œβ”€β”€ object
β”‚ β”‚ β”œβ”€β”€ array
β”‚ β”‚ └── class
β”‚ β”œβ”€β”€ Nullable Types
β”‚ └── var / dynamic
β”‚
β”œβ”€β”€ 4. Variables & Constants
β”‚ β”œβ”€β”€ Local Variables
β”‚ β”œβ”€β”€ Instance Variables
β”‚ β”œβ”€β”€ Static Variables
β”‚ β”œβ”€β”€ const
β”‚ └── readonly
β”‚
β”œβ”€β”€ 5. Operators
β”‚ β”œβ”€β”€ Arithmetic
β”‚ β”œβ”€β”€ Comparison
β”‚ β”œβ”€β”€ Logical
β”‚ β”œβ”€β”€ Bitwise
β”‚ β”œβ”€β”€ Assignment
β”‚ β”œβ”€β”€ Null Coalescing (??)
β”‚ └── Ternary (?:)
β”‚
β”œβ”€β”€ 6. Control Statements
β”‚ β”œβ”€β”€ if / else
β”‚ β”œβ”€β”€ switch
β”‚ β”œβ”€β”€ for
β”‚ β”œβ”€β”€ foreach
β”‚ β”œβ”€β”€ while
β”‚ β”œβ”€β”€ do-while
β”‚ β”œβ”€β”€ break / continue
β”‚ └── goto
β”‚
β”œβ”€β”€ 7. Methods
β”‚ β”œβ”€β”€ Method Declaration
β”‚ β”œβ”€β”€ Parameters
β”‚ β”‚ β”œβ”€β”€ ref
β”‚ β”‚ β”œβ”€β”€ out
β”‚ β”‚ β”œβ”€β”€ params
β”‚ β”‚ └── optional
β”‚ β”œβ”€β”€ Method Overloading
β”‚ └── Recursion
β”‚
β”œβ”€β”€ 8. Object-Oriented Programming
β”‚ β”œβ”€β”€ Classes & Objects
β”‚ β”œβ”€β”€ Constructors
β”‚ β”œβ”€β”€ Properties
β”‚ β”œβ”€β”€ Encapsulation
β”‚ β”œβ”€β”€ Inheritance
β”‚ β”œβ”€β”€ Polymorphism
β”‚ β”œβ”€β”€ Abstraction
β”‚ β”œβ”€β”€ Interfaces
β”‚ └── Abstract Classes
β”‚
β”œβ”€β”€ 9. Structs & Enums
β”‚ β”œβ”€β”€ struct
β”‚ β”œβ”€β”€ enum
β”‚ β”œβ”€β”€ record
β”‚ └── tuple
β”‚
β”œβ”€β”€ 10. Collections
β”‚ β”œβ”€β”€ Arrays
β”‚ β”œβ”€β”€ List<T>
β”‚ β”œβ”€β”€ Dictionary<K,V>
β”‚ β”œβ”€β”€ HashSet
β”‚ β”œβ”€β”€ Queue
β”‚ β”œβ”€β”€ Stack
β”‚ └── ObservableCollection
β”‚
β”œβ”€β”€ 11. Generics
β”‚ β”œβ”€β”€ Generic Classes
β”‚ β”œβ”€β”€ Generic Methods
β”‚ β”œβ”€β”€ Constraints
β”‚ └── Variance
β”‚
β”œβ”€β”€ 12. LINQ
β”‚ β”œβ”€β”€ Query Syntax
β”‚ β”œβ”€β”€ Method Syntax
β”‚ β”œβ”€β”€ Filtering
β”‚ β”œβ”€β”€ Projection
β”‚ β”œβ”€β”€ Grouping
β”‚ β”œβ”€β”€ Ordering
β”‚ └── Aggregation
β”‚
β”œβ”€β”€ 13. Delegates & Events
β”‚ β”œβ”€β”€ Delegates
β”‚ β”œβ”€β”€ Action / Func
β”‚ β”œβ”€β”€ Events
β”‚ └── Event Handlers
β”‚
β”œβ”€β”€ 14. Lambda & Expressions
β”‚ β”œβ”€β”€ Lambda Expressions
β”‚ β”œβ”€β”€ Expression Trees
β”‚ └── Anonymous Methods
β”‚
β”œβ”€β”€ 15. Exception Handling
β”‚ β”œβ”€β”€ try
β”‚ β”œβ”€β”€ catch
β”‚ β”œβ”€β”€ finally
β”‚ β”œβ”€β”€ throw
β”‚ └── Custom Exceptions
β”‚
β”œβ”€β”€ 16. Asynchronous Programming
β”‚ β”œβ”€β”€ async / await
β”‚ β”œβ”€β”€ Task
β”‚ β”œβ”€β”€ Parallel Programming
β”‚ β”œβ”€β”€ Thread
β”‚ └── ThreadPool
β”‚
β”œβ”€β”€ 17. File & I/O
β”‚ β”œβ”€β”€ File
β”‚ β”œβ”€β”€ Stream
β”‚ β”œβ”€β”€ FileStream
β”‚ β”œβ”€β”€ StreamReader
β”‚ β”œβ”€β”€ StreamWriter
β”‚ └── Serialization
β”‚
β”œβ”€β”€ 18. Memory Management
β”‚ β”œβ”€β”€ Garbage Collection
β”‚ β”œβ”€β”€ IDisposable
β”‚ β”œβ”€β”€ using statement
β”‚ └── Span / Memory
β”‚
β”œβ”€β”€ 19. Reflection & Attributes
β”‚ β”œβ”€β”€ Reflection API
β”‚ β”œβ”€β”€ Metadata Inspection
β”‚ β”œβ”€β”€ Attributes
β”‚ └── Custom Attributes
β”‚
β”œβ”€β”€ 20. Security
β”‚ β”œβ”€β”€ Cryptography
β”‚ β”œβ”€β”€ Hashing
β”‚ β”œβ”€β”€ Authentication
β”‚ └── Authorization
β”‚
β”œβ”€β”€ 21. Testing
β”‚ β”œβ”€β”€ Unit Testing
β”‚ β”œβ”€β”€ xUnit
β”‚ β”œβ”€β”€ NUnit
β”‚ └── Mocking (Moq)
β”‚
β”œβ”€β”€ 22. Interoperability
β”‚ β”œβ”€β”€ P/Invoke
β”‚ β”œβ”€β”€ COM Interop
β”‚ └── Native Libraries
β”‚
β”œβ”€β”€ 23. Packaging & Build
β”‚ β”œβ”€β”€ NuGet Packages
β”‚ β”œβ”€β”€ MSBuild
β”‚ β”œβ”€β”€ dotnet CLI
β”‚ └── Project SDK
β”‚
β”œβ”€β”€ 24. Framework Usage
β”‚ β”œβ”€β”€ ASP. NET Core
β”‚ β”œβ”€β”€ Blazor
β”‚ β”œβ”€β”€ WPF
β”‚ β”œβ”€β”€ WinForms
β”‚ └── MAUI
❀6πŸ”₯2
Learn Python for these job roles

β‘  Data Analyst β†’ Python + SQL + Pandas
β‘‘ Backend Developer β†’ Python + APIs + Databases
β‘’ Automation Engineer β†’ Python + scripting + workflows
β‘£ Data Scientist β†’ Python + ML + statistics
β‘€ AI/ML Engineer β†’ Python + deep learning + models
β‘₯ DevOps Engineer β†’ Python + cloud + automation
⑦ Cybersecurity Engineer β†’ Python + security tooling
β‘§ Quant Developer β†’ Python + finance + data
⑨ Web Developer β†’ Django / Flask + APIs
β‘© Cloud Engineer β†’ Python + AWS / Azure

Python opens many doors.

The key is building projects in the direction you want to go.

Learn it with our free course :

https://youtu.be/VZKNq5xHP-4?si=DcuV-zIqAy3H7k75
❀5
Master Full-Stack Development

FULL STACK MASTER TREE
β”‚
β”œβ”€β”€ 1. Internet & Web Fundamentals
β”‚ β”œβ”€β”€ How Internet Works
β”‚ β”‚ β”œβ”€β”€ DNS
β”‚ β”‚ β”œβ”€β”€ TCP/IP
β”‚ β”‚ β”œβ”€β”€ HTTP / HTTPS
β”‚ β”‚ └── Request–Response Cycle
β”‚ β”œβ”€β”€ Browser Architecture
β”‚ β”‚ β”œβ”€β”€ Rendering Engine
β”‚ β”‚ β”œβ”€β”€ JavaScript Engine
β”‚ β”‚ └── Event Loop
β”‚ └── Client vs Server
β”‚
β”œβ”€β”€ 2. Frontend Development
β”‚ β”‚
β”‚ β”œβ”€β”€ HTML
β”‚ β”‚ β”œβ”€β”€ Semantic HTML
β”‚ β”‚ β”œβ”€β”€ Forms
β”‚ β”‚ β”œβ”€β”€ Accessibility
β”‚ β”‚ └── SEO Basics
β”‚ β”‚
β”‚ β”œβ”€β”€ CSS
β”‚ β”‚ β”œβ”€β”€ Selectors
β”‚ β”‚ β”œβ”€β”€ Box Model
β”‚ β”‚ β”œβ”€β”€ Flexbox
β”‚ β”‚ β”œβ”€β”€ Grid
β”‚ β”‚ β”œβ”€β”€ Responsive Design
β”‚ β”‚ └── Animations
β”‚ β”‚
β”‚ β”œβ”€β”€ JavaScript
β”‚ β”‚ β”œβ”€β”€ ES6+ Features
β”‚ β”‚ β”œβ”€β”€ DOM Manipulation
β”‚ β”‚ β”œβ”€β”€ Events
β”‚ β”‚ β”œβ”€β”€ Async JS
β”‚ β”‚ β”‚ β”œβ”€β”€ Callbacks
β”‚ β”‚ β”‚ β”œβ”€β”€ Promises
β”‚ β”‚ β”‚ └── Async/Await
β”‚ β”‚ └── Fetch / AJAX
β”‚ β”‚
β”‚ β”œβ”€β”€ TypeScript
β”‚ β”‚ β”œβ”€β”€ Static Typing
β”‚ β”‚ β”œβ”€β”€ Interfaces
β”‚ β”‚ └── Generics
β”‚ β”‚
β”‚ β”œβ”€β”€ Frontend Frameworks
β”‚ β”‚ β”œβ”€β”€ React
β”‚ β”‚ β”‚ β”œβ”€β”€ Components
β”‚ β”‚ β”‚ β”œβ”€β”€ Hooks
β”‚ β”‚ β”‚ β”œβ”€β”€ Context API
β”‚ β”‚ β”‚ └── Next.js
β”‚ β”‚ β”œβ”€β”€ Angular
β”‚ β”‚ └── Vue
β”‚ β”‚
β”‚ β”œβ”€β”€ State Management
β”‚ β”‚ β”œβ”€β”€ Redux
β”‚ β”‚ β”œβ”€β”€ Zustand
β”‚ β”‚ └── Context API
β”‚ β”‚
β”‚ └── Styling Tools
β”‚ β”œβ”€β”€ Tailwind
β”‚ β”œβ”€β”€ Bootstrap
β”‚ └── Sass
β”‚
β”œβ”€β”€ 3. Backend Development
β”‚ β”œβ”€β”€ Server Basics
β”‚ β”‚ β”œβ”€β”€ REST Architecture
β”‚ β”‚ β”œβ”€β”€ API Design
β”‚ β”‚ └── Request Handling
β”‚ β”‚
β”‚ β”œβ”€β”€ Backend Languages
β”‚ β”‚ β”œβ”€β”€ Node.js
β”‚ β”‚ β”œβ”€β”€ Python
β”‚ β”‚ β”œβ”€β”€ Java
β”‚ β”‚ β”œβ”€β”€ C#
β”‚ β”‚ └── PHP
β”‚ β”‚
β”‚ β”œβ”€β”€ Backend Frameworks
β”‚ β”‚ β”œβ”€β”€ Express.js
β”‚ β”‚ β”œβ”€β”€ Django
β”‚ β”‚ β”œβ”€β”€ Spring Boot
β”‚ β”‚ β”œβ”€β”€ ASP. NET Core
β”‚ β”‚ └── Laravel
β”‚ β”‚
β”‚ β”œβ”€β”€ Authentication
β”‚ β”‚ β”œβ”€β”€ Sessions
β”‚ β”‚ β”œβ”€β”€ JWT
β”‚ β”‚ β”œβ”€β”€ OAuth
β”‚ β”‚ └── Role-Based Auth
β”‚ β”‚
β”‚ └── API Types
β”‚ β”œβ”€β”€ REST
β”‚ β”œβ”€β”€ GraphQL
β”‚ └── gRPC
β”‚
β”œβ”€β”€ 4. Databases
β”‚ β”œβ”€β”€ Relational DB
β”‚ β”‚ β”œβ”€β”€ MySQL
β”‚ β”‚ β”œβ”€β”€ PostgreSQL
β”‚ β”‚ └── SQL Server
β”‚ β”œβ”€β”€ NoSQL
β”‚ β”‚ β”œβ”€β”€ MongoDB
β”‚ β”‚ β”œβ”€β”€ Redis
β”‚ β”‚ └── Firebase
β”‚ β”œβ”€β”€ ORM / ODM
β”‚ β”‚ β”œβ”€β”€ Prisma
β”‚ β”‚ β”œβ”€β”€ Sequelize
β”‚ β”‚ β”œβ”€β”€ Entity Framework
β”‚ β”‚ └── Hibernate
β”‚ └── Database Design
β”‚ β”œβ”€β”€ Normalization
β”‚ β”œβ”€β”€ Indexing
β”‚ └── Transactions
β”‚
β”œβ”€β”€ 5. DevOps & Deployment
β”‚ β”œβ”€β”€ Git / GitHub
β”‚ β”œβ”€β”€ CI/CD
β”‚ β”‚ β”œβ”€β”€ GitHub Actions
β”‚ β”‚ └── Jenkins
β”‚ β”œβ”€β”€ Containers
β”‚ β”‚ β”œβ”€β”€ Docker
β”‚ β”‚ └── Kubernetes
β”‚ β”œβ”€β”€ Cloud
β”‚ β”‚ β”œβ”€β”€ AWS
β”‚ β”‚ β”œβ”€β”€ Azure
β”‚ β”‚ └── GCP
β”‚ └── Hosting
β”‚ β”œβ”€β”€ Vercel
β”‚ β”œβ”€β”€ Netlify
β”‚ └── VPS
β”‚
β”œβ”€β”€ 6. Performance & Security
β”‚ β”œβ”€β”€ Caching
β”‚ β”‚ β”œβ”€β”€ Redis
β”‚ β”‚ └── CDN
β”‚ β”œβ”€β”€ Optimization
β”‚ β”‚ β”œβ”€β”€ Code Splitting
β”‚ β”‚ β”œβ”€β”€ Lazy Loading
β”‚ β”‚ └── Compression
β”‚ └── Security
β”‚ β”œβ”€β”€ XSS
β”‚ β”œβ”€β”€ CSRF
β”‚ β”œβ”€β”€ CORS
β”‚ └── HTTPS
β”‚
β”œβ”€β”€ 7. Testing
β”‚ β”œβ”€β”€ Unit Testing
β”‚ β”œβ”€β”€ Integration Testing
β”‚ β”œβ”€β”€ E2E Testing
β”‚ β”œβ”€β”€ Jest
β”‚ β”œβ”€β”€ Cypress
β”‚ └── Playwright
β”‚
└── 8. Advanced Concepts
β”œβ”€β”€ Microservices
β”œβ”€β”€ Serverless
β”œβ”€β”€ WebSockets
β”œβ”€β”€ Progressive Web Apps
β”œβ”€β”€ Edge Computing
└── System Design Basics
❀17πŸ‘2
Master CSS

CSS MASTER TREE
β”‚
β”œβ”€β”€ 1. CSS Fundamentals
β”‚ β”œβ”€β”€ What is CSS
β”‚ β”œβ”€β”€ CSS Syntax
β”‚ β”œβ”€β”€ CSS Types
β”‚ β”‚ β”œβ”€β”€ Inline CSS
β”‚ β”‚ β”œβ”€β”€ Internal CSS
β”‚ β”‚ └── External CSS
β”‚ └── CSS Comments
β”‚
β”œβ”€β”€ 2. Selectors
β”‚ β”œβ”€β”€ Basic Selectors
β”‚ β”‚ β”œβ”€β”€ Element
β”‚ β”‚ β”œβ”€β”€ Class
β”‚ β”‚ └── ID
β”‚ β”œβ”€β”€ Combinators
β”‚ β”‚ β”œβ”€β”€ Descendant
β”‚ β”‚ β”œβ”€β”€ Child
β”‚ β”‚ β”œβ”€β”€ Adjacent Sibling
β”‚ β”‚ └── General Sibling
β”‚ β”œβ”€β”€ Attribute Selectors
β”‚ └── Pseudo
β”‚ β”œβ”€β”€ Pseudo-classes
β”‚ └── Pseudo-elements
β”‚
β”œβ”€β”€ 3. Box Model
β”‚ β”œβ”€β”€ Content
β”‚ β”œβ”€β”€ Padding
β”‚ β”œβ”€β”€ Border
β”‚ β”œβ”€β”€ Margin
β”‚ └── box-sizing
β”‚
β”œβ”€β”€ 4. Layout
β”‚ β”œβ”€β”€ display
β”‚ β”‚ β”œβ”€β”€ block
β”‚ β”‚ β”œβ”€β”€ inline
β”‚ β”‚ β”œβ”€β”€ inline-block
β”‚ β”‚ β”œβ”€β”€ none
β”‚ β”‚ └── contents
β”‚ β”œβ”€β”€ position
β”‚ β”‚ β”œβ”€β”€ static
β”‚ β”‚ β”œβ”€β”€ relative
β”‚ β”‚ β”œβ”€β”€ absolute
β”‚ β”‚ β”œβ”€β”€ fixed
β”‚ β”‚ └── sticky
β”‚ β”œβ”€β”€ float / clear
β”‚ └── z-index
β”‚
β”œβ”€β”€ 5. Flexbox
β”‚ β”œβ”€β”€ flex container
β”‚ β”œβ”€β”€ flex direction
β”‚ β”œβ”€β”€ justify-content
β”‚ β”œβ”€β”€ align-items
β”‚ β”œβ”€β”€ align-content
β”‚ β”œβ”€β”€ flex-wrap
β”‚ └── flex-grow / shrink / basis
β”‚
β”œβ”€β”€ 6. Grid Layout
β”‚ β”œβ”€β”€ grid container
β”‚ β”œβ”€β”€ grid-template
β”‚ β”œβ”€β”€ grid-gap
β”‚ β”œβ”€β”€ grid-area
β”‚ β”œβ”€β”€ grid-column
β”‚ └── grid-row
β”‚
β”œβ”€β”€ 7. Typography
β”‚ β”œβ”€β”€ font-family
β”‚ β”œβ”€β”€ font-size
β”‚ β”œβ”€β”€ font-weight
β”‚ β”œβ”€β”€ line-height
β”‚ β”œβ”€β”€ letter-spacing
β”‚ └── text-align
β”‚
β”œβ”€β”€ 8. Colors & Backgrounds
β”‚ β”œβ”€β”€ color formats
β”‚ β”‚ β”œβ”€β”€ HEX
β”‚ β”‚ β”œβ”€β”€ RGB
β”‚ β”‚ β”œβ”€β”€ HSL
β”‚ β”‚ └── Named colors
β”‚ β”œβ”€β”€ background-color
β”‚ β”œβ”€β”€ background-image
β”‚ β”œβ”€β”€ background-position
β”‚ β”œβ”€β”€ background-size
β”‚ └── gradients
β”‚
β”œβ”€β”€ 9. Responsive Design
β”‚ β”œβ”€β”€ Media Queries
β”‚ β”œβ”€β”€ Mobile First
β”‚ β”œβ”€β”€ Breakpoints
β”‚ β”œβ”€β”€ Responsive Units
β”‚ β”‚ β”œβ”€β”€ %
β”‚ β”‚ β”œβ”€β”€ vw / vh
β”‚ β”‚ └── rem / em
β”‚ └── Fluid Layouts
β”‚
β”œβ”€β”€ 10. Transforms
β”‚ β”œβ”€β”€ translate
β”‚ β”œβ”€β”€ rotate
β”‚ β”œβ”€β”€ scale
β”‚ └── skew
β”‚
β”œβ”€β”€ 11. Transitions
β”‚ β”œβ”€β”€ transition-property
β”‚ β”œβ”€β”€ transition-duration
β”‚ β”œβ”€β”€ transition-delay
β”‚ └── transition-timing-function
β”‚
β”œβ”€β”€ 12. Animations
β”‚ β”œβ”€β”€ @keyframes
β”‚ β”œβ”€β”€ animation-name
β”‚ β”œβ”€β”€ animation-duration
β”‚ β”œβ”€β”€ animation-delay
β”‚ β”œβ”€β”€ animation-iteration-count
β”‚ └── animation-direction
β”‚
β”œβ”€β”€ 13. Variables
β”‚ β”œβ”€β”€ CSS Custom Properties
β”‚ β”œβ”€β”€ var()
β”‚ └── Global vs Local Scope
β”‚
β”œβ”€β”€ 14. Advanced CSS
β”‚ β”œβ”€β”€ CSS Functions
β”‚ β”‚ β”œβ”€β”€ calc()
β”‚ β”‚ β”œβ”€β”€ clamp()
β”‚ β”‚ └── min() / max()
β”‚ β”œβ”€β”€ Filters
β”‚ β”œβ”€β”€ Backdrop Filter
β”‚ β”œβ”€β”€ Object-fit
β”‚ └── Aspect-ratio
β”‚
β”œβ”€β”€ 15. Preprocessors
β”‚ β”œβ”€β”€ Sass / SCSS
β”‚ β”œβ”€β”€ Less
β”‚ └── Stylus
β”‚
β”œβ”€β”€ 16. Frameworks & Tools
β”‚ β”œβ”€β”€ Tailwind CSS
β”‚ β”œβ”€β”€ Bootstrap
β”‚ β”œβ”€β”€ PostCSS
β”‚ └── Autoprefixer
β”‚
β”œβ”€β”€ 17. Performance
β”‚ β”œβ”€β”€ Minification
β”‚ β”œβ”€β”€ Critical CSS
β”‚ β”œβ”€β”€ Lazy Loading Styles
β”‚ └── Reducing Reflows
β”‚
└── 18. Best Practices
β”œβ”€β”€ BEM Naming
β”œβ”€β”€ SMACSS
β”œβ”€β”€ OOCSS
└── Maintainable CSS
❀10πŸ”₯1
DSA Roadmap (Basic β†’ Advanced) :

1.Basics
β†’ Time & Space Complexity
β†’ Math Basics
β†’ Bit Manipulation (Basics)

2.Arrays & Strings
β†’ Arrays
β†’ Strings
β†’ Two Pointers
β†’ Sliding Window
β†’ Prefix Sum
β†’ Kadane’s Algorithm

3.Searching & Sorting
β†’ Basic Sorting
β†’ Binary Search
β†’ Binary Search on Answer
β†’ Merge Sort
β†’ Quick Sort
β†’ Heap Sort

4.Recursion & Backtracking
β†’ Recursion Basics
β†’ Subsets / Subsequences
β†’ Permutations
β†’ Backtracking (N-Queens, Sudoku)

5.Hashing
β†’ Hash Maps
β†’ Frequency Counting
β†’ Prefix Hashing
β†’ Subarray / Substring Problems

6.Linked List
β†’ Singly Linked List
β†’ Doubly Linked List
β†’ Fast & Slow Pointer
β†’ Cycle Detection
β†’ Reverse / Merge Linked List

7.Stack & Queue
β†’ Stack
β†’ Queue
β†’ Deque
β†’ Monotonic Stack
β†’ Next Greater Element
β†’ Expression Evaluation

8.Greedy
β†’ Activity Selection
β†’ Interval Problems
β†’ Job Scheduling
β†’ Greedy with Sorting

9.Binary Trees
β†’ Tree Traversals
β†’ Height / Depth
β†’ Diameter
β†’ Lowest Common Ancestor
β†’ Tree Views

10.Binary Search Trees
β†’ BST Basics
β†’ Insert / Delete
β†’ Floor / Ceil
β†’ Validate BST
β†’ BST Problems

11.Heaps
β†’ Min Heap / Max Heap
β†’ Priority Queue
β†’ Kth Largest / Smallest
β†’ Merge K Sorted Lists

12.Graphs
β†’ Graph Representation
β†’ BFS / DFS
β†’ Cycle Detection
β†’ Topological Sort
β†’ Shortest Path Algorithms
β†’ Minimum Spanning Tree

13.Dynamic Programming
β†’ 1D DP
β†’ 2D DP
β†’ DP on Subsequences
β†’ DP on Strings
β†’ DP on Trees
β†’ Space Optimization

14.Advanced Topics
β†’ Tries
β†’ Disjoint Set (Union Find)
β†’ Segment Tree
β†’ Fenwick Tree
β†’ String Algorithms (KMP, Z)
❀8πŸ”₯2
Master System Design

SYSTEM DESIGN MASTER TREE
β”‚
β”œβ”€β”€ 1. Foundations
β”‚ β”œβ”€β”€ What is System Design
β”‚ β”œβ”€β”€ Functional vs Non-Functional Requirements
β”‚ β”œβ”€β”€ Scalability (Vertical / Horizontal)
β”‚ β”œβ”€β”€ Latency vs Throughput
β”‚ β”œβ”€β”€ Availability vs Consistency
β”‚ └── CAP Theorem
β”‚
β”œβ”€β”€ 2. Core Architecture
β”‚ β”œβ”€β”€ Client–Server Architecture
β”‚ β”œβ”€β”€ 3-Tier Architecture
β”‚ β”œβ”€β”€ Monolithic Systems
β”‚ β”œβ”€β”€ Microservices
β”‚ β”œβ”€β”€ Service Oriented Architecture
β”‚ └── Event Driven Architecture
β”‚
β”œβ”€β”€ 3. Networking Layer
β”‚ β”œβ”€β”€ HTTP / HTTPS
β”‚ β”œβ”€β”€ REST APIs
β”‚ β”œβ”€β”€ gRPC
β”‚ β”œβ”€β”€ WebSockets
β”‚ β”œβ”€β”€ API Gateway
β”‚ └── Service Discovery
β”‚
β”œβ”€β”€ 4. Load Handling
β”‚ β”œβ”€β”€ Load Balancers
β”‚ β”‚ β”œβ”€β”€ Round Robin
β”‚ β”‚ β”œβ”€β”€ Least Connections
β”‚ β”‚ └── Consistent Hashing
β”‚ β”œβ”€β”€ Rate Limiting
β”‚ β”œβ”€β”€ Throttling
β”‚ └── Traffic Shaping
β”‚
β”œβ”€β”€ 5. Caching Systems
β”‚ β”œβ”€β”€ Client Side Cache
β”‚ β”œβ”€β”€ CDN
β”‚ β”œβ”€β”€ Reverse Proxy Cache
β”‚ β”œβ”€β”€ In-Memory Cache
β”‚ β”‚ β”œβ”€β”€ Redis
β”‚ β”‚ └── Memcached
β”‚ └── Cache Strategies
β”‚ β”œβ”€β”€ Cache Aside
β”‚ β”œβ”€β”€ Write Through
β”‚ └── Write Back
β”‚
β”œβ”€β”€ 6. Databases
β”‚ β”œβ”€β”€ SQL Databases
β”‚ β”‚ β”œβ”€β”€ MySQL
β”‚ β”‚ └── PostgreSQL
β”‚ β”œβ”€β”€ NoSQL
β”‚ β”‚ β”œβ”€β”€ MongoDB
β”‚ β”‚ β”œβ”€β”€ Cassandra
β”‚ β”‚ └── DynamoDB
β”‚ β”œβ”€β”€ Data Modeling
β”‚ β”œβ”€β”€ Indexing
β”‚ └── Replication
β”‚
β”œβ”€β”€ 7. Database Scaling
β”‚ β”œβ”€β”€ Vertical Scaling
β”‚ β”œβ”€β”€ Horizontal Scaling
β”‚ β”œβ”€β”€ Sharding
β”‚ β”œβ”€β”€ Partitioning
β”‚ β”œβ”€β”€ Read Replicas
β”‚ └── Leader–Follower Replication
β”‚
β”œβ”€β”€ 8. Message Systems
β”‚ β”œβ”€β”€ Message Queue
β”‚ β”‚ β”œβ”€β”€ RabbitMQ
β”‚ β”‚ └── SQS
β”‚ β”œβ”€β”€ Event Streaming
β”‚ β”‚ └── Kafka
β”‚ β”œβ”€β”€ Pub/Sub
β”‚ └── Event Bus
β”‚
β”œβ”€β”€ 9. Storage Systems
β”‚ β”œβ”€β”€ Object Storage
β”‚ β”‚ β”œβ”€β”€ S3
β”‚ β”‚ └── Blob Storage
β”‚ β”œβ”€β”€ File Storage
β”‚ └── Distributed Storage
β”‚
β”œβ”€β”€ 10. Reliability
β”‚ β”œβ”€β”€ Fault Tolerance
β”‚ β”œβ”€β”€ Failover
β”‚ β”œβ”€β”€ Redundancy
β”‚ β”œβ”€β”€ Health Checks
β”‚ └── Circuit Breaker
β”‚
β”œβ”€β”€ 11. Observability
β”‚ β”œβ”€β”€ Logging
β”‚ β”œβ”€β”€ Monitoring
β”‚ β”œβ”€β”€ Metrics
β”‚ β”œβ”€β”€ Alerting
β”‚ └── Distributed Tracing
β”‚
β”œβ”€β”€ 12. Security
β”‚ β”œβ”€β”€ Authentication
β”‚ β”‚ β”œβ”€β”€ JWT
β”‚ β”‚ └── OAuth
β”‚ β”œβ”€β”€ Authorization
β”‚ β”œβ”€β”€ Encryption
β”‚ β”œβ”€β”€ TLS
β”‚ └── Secret Management
β”‚
β”œβ”€β”€ 13. Design Patterns (Industry)
β”‚ β”œβ”€β”€ Microservices Patterns
β”‚ β”‚ β”œβ”€β”€ API Gateway Pattern
β”‚ β”‚ β”œβ”€β”€ Service Registry Pattern
β”‚ β”‚ β”œβ”€β”€ Sidecar Pattern
β”‚ β”‚ └── Saga Pattern
β”‚ β”œβ”€β”€ Data Patterns
β”‚ β”‚ β”œβ”€β”€ CQRS
β”‚ β”‚ β”œβ”€β”€ Event Sourcing
β”‚ β”‚ └── Database per Service
β”‚ β”œβ”€β”€ Communication Patterns
β”‚ β”‚ β”œβ”€β”€ Request-Response
β”‚ β”‚ β”œβ”€β”€ Publish-Subscribe
β”‚ β”‚ └── Event Streaming
β”‚ └── Reliability Patterns
β”‚ β”œβ”€β”€ Circuit Breaker
β”‚ β”œβ”€β”€ Bulkhead
β”‚ └── Retry Pattern
β”‚
β”œβ”€β”€ 14. Distributed Systems Concepts
β”‚ β”œβ”€β”€ Consensus (Raft)
β”‚ β”œβ”€β”€ Leader Election
β”‚ β”œβ”€β”€ Distributed Locks
β”‚ β”œβ”€β”€ Id Generation (Snowflake)
β”‚ └── Time Synchronization
β”‚
β”œβ”€β”€ 15. Deployment Infrastructure
β”‚ β”œβ”€β”€ Containers (Docker)
β”‚ β”œβ”€β”€ Container Orchestration
β”‚ β”‚ └── Kubernetes
β”‚ β”œβ”€β”€ CI/CD Pipelines
β”‚ └── Infrastructure as Code
β”‚
└── 16. Real-World Design Problems
β”œβ”€β”€ URL Shortener
β”œβ”€β”€ Social Media Feed
β”œβ”€β”€ Chat System
β”œβ”€β”€ Video Streaming Platform
└── Ride Sharing System
❀7πŸ‘2
Fundamental Skills.
❀11
Frontend architecture.
❀7πŸ‘2
Master DSA

DSA MASTER TREE
β”‚
β”œβ”€β”€ 1. Foundations
β”‚ β”œβ”€β”€ What is Data Structure
β”‚ β”œβ”€β”€ What is Algorithm
β”‚ β”œβ”€β”€ Time Complexity
β”‚ β”‚ β”œβ”€β”€ Big-O
β”‚ β”‚ β”œβ”€β”€ Big-Ξ©
β”‚ β”‚ └── Big-Θ
β”‚ β”œβ”€β”€ Space Complexity
β”‚ └── Recurrence Relations
β”‚
β”œβ”€β”€ 2. Mathematical Basics
β”‚ β”œβ”€β”€ Logarithms
β”‚ β”œβ”€β”€ Modular Arithmetic
β”‚ β”œβ”€β”€ Prime Numbers
β”‚ β”œβ”€β”€ GCD / LCM
β”‚ └── Sieve of Eratosthenes
β”‚
β”œβ”€β”€ 3. Arrays
β”‚ β”œβ”€β”€ Traversal
β”‚ β”œβ”€β”€ Searching
β”‚ β”‚ β”œβ”€β”€ Linear Search
β”‚ β”‚ └── Binary Search
β”‚ β”œβ”€β”€ Prefix Sum
β”‚ β”œβ”€β”€ Sliding Window
β”‚ β”œβ”€β”€ Two Pointers
β”‚ β”œβ”€β”€ Kadane’s Algorithm
β”‚ └── Matrix / 2D Arrays
β”‚
β”œβ”€β”€ 4. Strings
β”‚ β”œβ”€β”€ String Manipulation
β”‚ β”œβ”€β”€ Pattern Matching
β”‚ β”‚ β”œβ”€β”€ Naive
β”‚ β”‚ β”œβ”€β”€ KMP
β”‚ β”‚ β”œβ”€β”€ Rabin-Karp
β”‚ β”‚ └── Z Algorithm
β”‚ β”œβ”€β”€ Palindrome Problems
β”‚ β”œβ”€β”€ String Hashing
β”‚ └── Trie
β”‚
β”œβ”€β”€ 5. Linked Lists
β”‚ β”œβ”€β”€ Singly Linked List
β”‚ β”œβ”€β”€ Doubly Linked List
β”‚ β”œβ”€β”€ Circular Linked List
β”‚ β”œβ”€β”€ Reverse Linked List
β”‚ β”œβ”€β”€ Cycle Detection (Floyd)
β”‚ └── Merge Lists
β”‚
β”œβ”€β”€ 6. Stack
β”‚ β”œβ”€β”€ Stack Implementation
β”‚ β”œβ”€β”€ Balanced Parentheses
β”‚ β”œβ”€β”€ Next Greater Element
β”‚ β”œβ”€β”€ Monotonic Stack
β”‚ └── Min Stack
β”‚
β”œβ”€β”€ 7. Queue
β”‚ β”œβ”€β”€ Queue Implementation
β”‚ β”œβ”€β”€ Circular Queue
β”‚ β”œβ”€β”€ Deque
β”‚ β”œβ”€β”€ Priority Queue
β”‚ └── Monotonic Queue
β”‚
β”œβ”€β”€ 8. Hashing
β”‚ β”œβ”€β”€ Hash Tables
β”‚ β”œβ”€β”€ Collision Handling
β”‚ β”‚ β”œβ”€β”€ Chaining
β”‚ β”‚ └── Open Addressing
β”‚ β”œβ”€β”€ Load Factor
β”‚ └── Rehashing
β”‚
β”œβ”€β”€ 9. Trees
β”‚ β”œβ”€β”€ Binary Tree
β”‚ β”‚ β”œβ”€β”€ Traversals
β”‚ β”‚ β”‚ β”œβ”€β”€ Inorder
β”‚ β”‚ β”‚ β”œβ”€β”€ Preorder
β”‚ β”‚ β”‚ └── Postorder
β”‚ β”‚ β”œβ”€β”€ Height / Depth
β”‚ β”‚ └── Diameter
β”‚ β”œβ”€β”€ Binary Search Tree
β”‚ β”œβ”€β”€ AVL Tree
β”‚ β”œβ”€β”€ Red-Black Tree
β”‚ β”œβ”€β”€ Segment Tree
β”‚ β”œβ”€β”€ Fenwick Tree
β”‚ └── Heap
β”‚ β”œβ”€β”€ Min Heap
β”‚ └── Max Heap
β”‚
β”œβ”€β”€ 10. Graphs
β”‚ β”œβ”€β”€ Graph Representation
β”‚ β”‚ β”œβ”€β”€ Adjacency Matrix
β”‚ β”‚ └── Adjacency List
β”‚ β”œβ”€β”€ BFS
β”‚ β”œβ”€β”€ DFS
β”‚ β”œβ”€β”€ Topological Sort
β”‚ β”œβ”€β”€ Cycle Detection
β”‚ β”œβ”€β”€ Shortest Path
β”‚ β”‚ β”œβ”€β”€ Dijkstra
β”‚ β”‚ β”œβ”€β”€ Bellman-Ford
β”‚ β”‚ └── Floyd-Warshall
β”‚ β”œβ”€β”€ Minimum Spanning Tree
β”‚ β”‚ β”œβ”€β”€ Kruskal
β”‚ β”‚ └── Prim
β”‚ └── Disjoint Set (Union-Find)
β”‚
β”œβ”€β”€ 11. Recursion & Backtracking
β”‚ β”œβ”€β”€ Recursion Basics
β”‚ β”œβ”€β”€ Subsets
β”‚ β”œβ”€β”€ Permutations
β”‚ β”œβ”€β”€ N-Queens
β”‚ └── Sudoku Solver
β”‚
β”œβ”€β”€ 12. Greedy Algorithms
β”‚ β”œβ”€β”€ Activity Selection
β”‚ β”œβ”€β”€ Huffman Coding
β”‚ β”œβ”€β”€ Fractional Knapsack
β”‚ └── Job Scheduling
β”‚
β”œβ”€β”€ 13. Dynamic Programming
β”‚ β”œβ”€β”€ Memoization
β”‚ β”œβ”€β”€ Tabulation
β”‚ β”œβ”€β”€ 1D DP
β”‚ β”œβ”€β”€ 2D DP
β”‚ β”œβ”€β”€ Knapsack Variants
β”‚ β”œβ”€β”€ Longest Common Subsequence
β”‚ β”œβ”€β”€ Longest Increasing Subsequence
β”‚ └── Matrix Chain Multiplication
β”‚
β”œβ”€β”€ 14. Bit Manipulation
β”‚ β”œβ”€β”€ Bitwise Operators
β”‚ β”œβ”€β”€ Set / Clear Bits
β”‚ β”œβ”€β”€ Count Set Bits
β”‚ └── XOR Tricks
β”‚
β”œβ”€β”€ 15. Advanced DSA
β”‚ β”œβ”€β”€ Sparse Table
β”‚ β”œβ”€β”€ Heavy-Light Decomposition
β”‚ β”œβ”€β”€ Treap
β”‚ β”œβ”€β”€ Splay Tree
β”‚ └── Skip List
β”‚
└── 16. Interview Patterns
β”œβ”€β”€ Two Pointer Pattern
β”œβ”€β”€ Sliding Window Pattern
β”œβ”€β”€ Binary Search Pattern
β”œβ”€β”€ BFS / DFS Pattern
β”œβ”€β”€ Greedy Choice Pattern
└── DP Pattern Recognition
❀13πŸ”₯3
Python + Pandas β†’ Data Manipulation
Python + Scikit-learn β†’ ML Engineering
Python + TensorFlow β†’ Deep Learning
Python + Matplotlib β†’ Data Visualization
Python + Seaborn β†’ Advanced Charts
Python + BeautifulSoup β†’ Web Scraping
Python + Selenium β†’ Browser Auto.
Python + FastAPI β†’ Performance APIs
Python + SQLAlchemy β†’ DB Access
Python + Flask β†’ Lightweight Apps
Python + Django β†’ Scalable Platforms
Python + OpenCV β†’ Computer Vision
Python + Pygame β†’ Game Development

One language. Infinite leverage.
____

Learn it with our free course :

https://youtu.be/VZKNq5xHP-4?si=DcuV-zIqAy3H7k75
❀10πŸ’―3πŸ‘2😁2
Forwarded from Muhammed Teshome
Skills that will pay you for the rest of your life:

1. Copywriting (turn words into money)
2. Video Editing (every brand needs this)
3. SEO (get found without paying for ads)
4. Public Speaking (command any room you enter)
5. Coding (build anything you imagine)
6. Graphic Design (visual communication is everything)
7. Data Analysis (companies will always pay for insights)
8. Sales (the one skill that never goes unemployed)
9. Email Marketing (highest ROI of any digital channel)
10. Content Writing (fuel every business online)
11. Social Media Management (every brand needs a voice)
12. UX Design (make products people actually love using)
13. Prompt Engineering (get the most out of AI tools)
14. Financial Modelling (banks and startups both need this)
15. Negotiation (save and earn more in every conversation)
16. No-Code Development (build apps without writing a single line)
17. Personal Branding (make your name worth something online)

Learn one skill deeply. The internet will reward you for it.
❀20πŸ‘5πŸ‘Ž2
Forwarded from Muhammed Teshome
ዩቱα‰₯ αˆ‹α‹­ α‰  αˆŒαˆŽα‰½ α‰‹αŠ•α‰‹α‹Žα‰½α‹Žα‰½αŠ• α‰  αŠ αˆ›αˆ­αŠ› αŠ«α•αˆΊαŠ• αŠ₯αŠ•α‹²α‹«α‹°αˆ­αŒαˆ‹α‰½αˆ αŠ¨αˆαˆαŒ‹α‰½αˆ ...

setting αŒα‰‘....
subtitle On.
to Amharic... α‰ αˆ‰α‰΅!

αŠ¨α‹šα‹« αˆ›αŠ•αŠ›α‹αŠ•αˆ α‰‹αŠ•α‰‹ α‰  αŠ αˆ›αˆ­αŠ› α…αˆα‰αŠ• α‰³α‹©α‰³αˆ‹α‰½αˆ!

If you are new.
❀13πŸ‘5
πŸ“‚ SaaS Stack
┃
┣ πŸ“‚ Frontend
┃ ┣ πŸ“‚ React
┃ ┣ πŸ“‚ NextJS
┃ ┣ πŸ“‚ Vue
┃ ┣ πŸ“‚ TailwindCSS
┃ β”— πŸ“‚ Shadcn UI
┃
┣ πŸ“‚ Backend
┃ ┣ πŸ“‚ NodeJS
┃ ┣ πŸ“‚ Django
┃ ┣ πŸ“‚ Laravel
┃ ┣ πŸ“‚ FastAPI
┃ β”— πŸ“‚ Express
┃
┣ πŸ“‚ Database
┃ ┣ πŸ“‚ PostgreSQL
┃ ┣ πŸ“‚ MySQL
┃ ┣ πŸ“‚ MongoDB
┃ ┣ πŸ“‚ Redis
┃ β”— πŸ“‚ Supabase
┃
┣ πŸ“‚ Auth
┃ ┣ πŸ“‚ Clerk
┃ ┣ πŸ“‚ Auth0
┃ ┣ πŸ“‚ Firebase Auth
┃ ┣ πŸ“‚ Supabase Auth
┃ β”— πŸ“‚ NextAuth
┃
┣ πŸ“‚ Payments
┃ ┣ πŸ“‚ Stripe
┃ ┣ πŸ“‚ Paddle
┃ ┣ πŸ“‚ Dodo Payments
┃ ┣ πŸ“‚ Lemon Squeezy
┃ β”— πŸ“‚ Polar
┃
┣ πŸ“‚ Emails
┃ ┣ πŸ“‚ Resend
┃ ┣ πŸ“‚ SendGrid
┃ ┣ πŸ“‚ Mailgun
┃ ┣ πŸ“‚ Postmark
┃ β”— πŸ“‚ Amazon SES
┃
┣ πŸ“‚ Storage
┃ ┣ πŸ“‚ AWS
┃ ┣ πŸ“‚ Cloudflare
┃ ┣ πŸ“‚ Google Cloud Storage
┃ ┣ πŸ“‚ Supabase Storage
┃ β”— πŸ“‚ Uploadcare
┃
┣ πŸ“‚ Deployment
┃ ┣ πŸ“‚ Vercel
┃ ┣ πŸ“‚ Netlify
┃ ┣ πŸ“‚ Railway
┃ ┣ πŸ“‚ Render
┃ β”— πŸ“‚ AWS
┃
┣ πŸ“‚ Domains and DNS
┃ ┣ πŸ“‚ Namecheap
┃ ┣ πŸ“‚ Hostinger
┃ ┣ πŸ“‚ Cloudflare DNS
┃ ┣ πŸ“‚ Google Domains
┃ β”— πŸ“‚ SiteGround
┃
┣ πŸ“‚ Analytics
┃ ┣ πŸ“‚ Google Analytics
┃ ┣ πŸ“‚ Plausible
┃ ┣ πŸ“‚ PostHog
┃ ┣ πŸ“‚ Mixpanel
┃ β”— πŸ“‚ DataFast
┃
┣ πŸ“‚ Monitoring
┃ ┣ πŸ“‚ Sentry
┃ ┣ πŸ“‚ LogRocket
┃ ┣ πŸ“‚ Datadog
┃ ┣ πŸ“‚ NewRelic
┃ β”— πŸ“‚ UptimeRobot
┃
┣ πŸ“‚ DevOps
┃ ┣ πŸ“‚ Docker
┃ ┣ πŸ“‚ Kubernetes
┃ ┣ πŸ“‚ GitHub Actions
┃ ┣ πŸ“‚ CI CD
┃ β”— πŸ“‚ Terraform
┃
┣ πŸ“‚ Search
┃ ┣ πŸ“‚ Algolia
┃ ┣ πŸ“‚ Meilisearch
┃ ┣ πŸ“‚ Elasticsearch
┃ ┣ πŸ“‚ Typesense
┃ β”— πŸ“‚ OpenSearch
┃
┣ πŸ“‚ AI Integration
┃ ┣ πŸ“‚ OpenAI API
┃ ┣ πŸ“‚ Anthropic API
┃ ┣ πŸ“‚ Replicate
┃ ┣ πŸ“‚ HuggingFace
┃ β”— πŸ“‚ Gemini API
┃
┣ πŸ“‚ Integrations
┃ ┣ πŸ“‚ Zapier
┃ ┣ πŸ“‚ Make
┃ ┣ πŸ“‚ n8n
┃ ┣ πŸ“‚ Pabbly
┃ β”— πŸ“‚ Webhooks
┃
┣ πŸ“‚ Security
┃ ┣ πŸ“‚ SSL
┃ ┣ πŸ“‚ Cloudflare
┃ ┣ πŸ“‚ WAF
┃ ┣ πŸ“‚ Rate Limiting
┃ β”— πŸ“‚ Secrets Management
┃
┣ πŸ“‚ Marketing
┃ ┣ πŸ“‚ Search Console
┃ ┣ πŸ“‚ Outrank
┃ ┣ πŸ“‚ Buffer
┃ ┣ πŸ“‚ Analytics
┃ β”— πŸ“‚ Kit
┃
β”— πŸ“‚ Customer Support
┣ πŸ“‚ Intercom
┣ πŸ“‚ Crisp
┣ πŸ“‚ Zendesk
┣ πŸ“‚ Tawk
β”— πŸ“‚ HelpScout
πŸ‘8❀2
To make money, create value.

To create value, solve problems.

To solve problems, build skills.

Learn with us.

@EmmersiveLearning
❀19πŸ‘6