- How to Use System Design in Your React Project
- “AWS EC2: Unable to Connect,” a Security Group Checklist for Developers
- Why Your Team Needs a Leader, Not Just More Developers
- SLF4J, Logback, and Log4j: A Straightforward Guide to Java Logging
- Flyway vs. Liquibase: Which Database Migration Tool is Right for You?
- VM or Container? The Developer’s Guide to Choosing the Right Isolation
- A Three-Step Framework for Launching Your Project
- Centralized Error Handling with React useContext
- The Art of Prompting for a Developer
- The No-Code Backend
- MagicMock with Python
- Layered Architecture in Java: A Practical Guide to Keeping Your Code Clean
- 3 JVM Parameters You Must Know
- The CEO’s Guide to Choosing the Right Tech Stack
- Publish a Python Wheel to GCP Artifact Registry with Poetry
- Mastering Data Validation in Java Applications
- 3 Signs Your Website Is Slowing Down Your Company’s Growth
- Architecture, DevOps and Security: The 3 Pillars to Grow A Product
- Python Unittest Mocking Constructors
- Debug Server Performance
- Architecture for my Generative AI Application
- Advantages and Disadvantages of Alembic
- Mastering Docker Compose for Local Development and Testing
- Multi-Environment Configuration in Spring Boot
- React Performance Tips and Tools
- I’ve Created a RAG in Two Days
- Forms in React, with or without React Forms
- Stop & Start GCP SQL Instances at Nights
- SQLAlchemy and JSON values
- GCP Cloud Functions with SQL Access
- Deploying a Spring Boot Application to AWS ECS Fargate
- Handle The Errors with Flask Correctly
- How to Center Content into a DIV with CSS
- How to Handle AttributeError: ‘NoneType’ Object Has No Attribute X’ Like a Pro
- Forgot Password Feature with Python and Flask
- Shut Down GCP Instance Groups at Nights
- Create a GCP Instance Group using Docker
- How to Create A GCP Instance Group Easily
- Optional vs Null
- Create a GCP Bucket with a Custom Domain
- 3 Steps to Estimate a Task with Precision
- How to Create a Singleton with Java Enums
- How to Solve the CORS error with Flask
- How to Organize the Packages of your Project?
- Git Reset
- OAuth2, Which Workflow to Choose?
- 5 Essential Tips for Securing Your Spring Application
- Estimate a Task in Points or Time
- Understand the Most Important DNS Records
- AWS API Gateway With A Proxy Lambda and Binary Content
- Authenticate Your Spring Application With AWS Cognito
- 5 Tips to Maintain a Code Clean
- How To Create SSH Keys
- Code Review Tips
- Where To Write Documentation
- When It’s Time To Refactor
- Custom domain For Backend And Frontend In AWS
- The 5 Keys to Effective RESTful API Design
- Router and React Application in AWS S3
- Which HTTP Response Code to Use?
- OAuth2 With Google, Spring Boot And Angular
- Which HTTP Verb to Use?
- 3 Ways To Store Passwords Securely
- Use Pagination to Speed Up Your API
- 6 Tips To Keep Your Code Clean
- 5 Productivity Tips To Work From Home
- Feature Flags: Deploy Unstable Features
- Optimize Your API Using Memoization
- Security In The Cloud: 7 AWS Best Practices
- Deploy A Spring Boot Application in AWS Lambda
- What Does My CI/CD Pipelines Look Like?
- How I use Gitflow in real-life projects with GitlabCI
- How to use React for a CRUD application
- 4 Ways to Protect Your Application From Being Hacked
- How to Solve a NullPointerException Correctly
- How Not To Create An Application
- 7 Habits of Great Developers
- Advantages and Disadvantages of the JWT
- Workflow of the Forget Password Strategy
- 3 Steps to Get a Job as a Junior With No Experience
- Complexity vs Urgency
- 4 Performance Optimization Techniques for Your Application
- Deploy a React Frontend to AWS S3
- Upload your Angular Frontend to GCP Storage
- Solve the CORS error with Spring Security
- How I Solved 20 Vulnerabilities in Less Than An Hour
- Exploring the Benefits and Challenges of AWS Adoption
- 5 Architecture Styles To Build a Big Application
- Trade-offs in Pursuit of High-Performance Application
- 10 AWS Services Every Developer Should Know About
- How to Calculate the Servers Sizes for my Microservices
- Authenticate Your Angular Application with JWT
- Microservices Communications
- My Problems with Flyway
- Microservices vs Serverless
- Stop Using Null on Database Rows
- Protect your Spring Boot application with JWT
- Implement the CRUD Operations in Angular
- The Hardest Bug I’ve Faced
- PostgreSQL’s Deadlocks
The Dev World – Sergio Lema
Software Architect
The Dev World - Sergio Lema 