Using SQS between upload and image processing
How to send a small job to Amazon SQS after the file is in S3. Covers SendMessage, long polling, visibility timeout, and deleting the message only after the worker finishes.
Blog
Long-form articles on software engineering, product building, and lessons learned.
Saving uploaded images to S3
How a Node.js API writes the original file to Amazon S3 with PutObject and returns HTTP 202. Resizing happens later, not in the same request.
Log-Structured Merge Trees: Fast Writes Without Rewriting Pages
How LSM trees buffer writes in memory, flush sorted files, compact in the background, and trade read and space costs for high ingest – plus when a B-tree still fits better.
Database Indexes Explained: Find Rows Without Scanning Everything
A practical guide to database indexes: what they are, how B-trees find rows, when composite and covering indexes help, and when another index only slows your writes.
JavaScript Memory Management: How to Stop Leaks and Use Less RAM
JavaScript frees memory for you, but that does not mean you can ignore it. Learn how allocation, garbage collection, and weak references work – and how to write code that stays fast.
What Is Web Workers API?
Web Workers API allows you to run JavaScript in background threads, separate from the main execution thread. This keeps your UI responsive, improves performance, and enables heavy tasks to run without blocking the user experience.
The 4 Core Challenges of Web System Design
Every large-scale web application faces the same challenges: handling more users, managing growing amounts of data, maintaining low latency, and ensuring consistency. Learn the architectural patterns used to solve them.
What Is Infrastructure as Code (IaC)?
Infrastructure as Code turns manual infrastructure management into repeatable, version-controlled automation. Explore Terraform, Ansible, Docker, Kubernetes, and the role each plays in modern DevOps.