Notes from every lesson along the way.

Mastering Java Streams API

Learned Java Streams to process collections in a functional style. Practiced filtering, mapping, sorting and collecting data efficiently using lambda expressions.

Introduction to System Design

Started learning system design concepts including scalability, load balancing, caching and distributed systems.

Implementing JWT Authentication

Implemented authentication using JSON Web Tokens. Learned token generation, validation, refresh tokens and secure authentication flow.

Database Indexing Explained

Studied database indexes and how they improve query performance. Learned B-Tree indexing and situations where indexes should or should not be created.

Building REST APIs with Spring Boot

Created REST APIs using Spring Boot. Learned about controllers, request mappings, path variables and REST architecture.

Deep Dive into Java Collections Framework

Explored Java Collections including List, Set, Queue and Map. Learned their implementations, differences and when to use each collection depending on performance requirements.

easy

Mastering Time Complexity and Big-O Notation

Today I focused on understanding time complexity and Big-O notation. I learned how to evaluate the efficiency of algorithms by analyzing the number of operations performed as the input size grows. Understanding complexity helps in writing optimized and scalable solutions.

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Mastering Java Streams API

Learned Java Streams to process collections in a functional style. Practiced filtering, mapping, sorting and collecting data efficiently using lambda expressions.

Introduction to System Design

Started learning system design concepts including scalability, load balancing, caching and distributed systems.

Implementing JWT Authentication

Implemented authentication using JSON Web Tokens. Learned token generation, validation, refresh tokens and secure authentication flow.

Database Indexing Explained

Studied database indexes and how they improve query performance. Learned B-Tree indexing and situations where indexes should or should not be created.

Building REST APIs with Spring Boot

Created REST APIs using Spring Boot. Learned about controllers, request mappings, path variables and REST architecture.

Deep Dive into Java Collections Framework

Explored Java Collections including List, Set, Queue and Map. Learned their implementations, differences and when to use each collection depending on performance requirements.

easy

Mastering Time Complexity and Big-O Notation

The Log

Every Entry

July 2026

10 entries

10Fri

Java

Mastering Java Streams API

Learned Java Streams to process collections in a functional style. Practiced filtering, mapping, sorting and collecting data efficiently using lambda expressions.

09Thu

System Design

Introduction to System Design

Started learning system design concepts including scalability, load balancing, caching and distributed systems.

08Wed

Backend

Implementing JWT Authentication

Implemented authentication using JSON Web Tokens. Learned token generation, validation, refresh tokens and secure authentication flow.

07Tue

Frontend

Optimizing React Performance

Explored React optimization techniques including memoization, lazy loading and avoiding unnecessary re-renders.

06Mon

DevOps

Getting Started with Docker

Learned containerization using Docker. Understood images, containers, Dockerfiles and Docker Compose for development environments.

05Sun

Database

Database Indexing Explained

Studied database indexes and how they improve query performance. Learned B-Tree indexing and situations where indexes should or should not be created.

04Sat

Spring Boot

Building REST APIs with Spring Boot

Created REST APIs using Spring Boot. Learned about controllers, request mappings, path variables and REST architecture.

03Fri

DSA

Understanding Binary Search

Learned how Binary Search reduces the search space by half on every iteration. Practiced iterative and recursive implementations along with edge cases.

02Thu

Java

Deep Dive into Java Collections Framework

Explored Java Collections including List, Set, Queue and Map. Learned their implementations, differences and when to use each collection depending on performance requirements.