Vijay T - Technical Blog

Moving environment variables to AWS secret manager

Updated: 3/4/2026, 9:53:41 PM

TL;DR

What you need to change How to do it
Task definition – replace the plain‑text environment block with a secrets block that points to the Secrets Manager ARN (or ARN + JSON key). JSON/YAML, CloudFormation, CDK, Terraform example...

Styles for blog post after transforming contents from markdown to html

Updated: 3/4/2026, 9:49:36 PM

Below is a stand‑alone CSS stylesheet you can drop into the <head> of the page (or import as a separate file).
All rules are scoped to the wrapper element that carries the class message, so they won’t interfere with the rest of the site.

<link rel="stylesheet" href="message.cs...

What is Chroma DB and how to use it?

Updated: 2/17/2026, 8:43:06 PM

🎯 Quick TL;DR

What is it? What it does How to get it on macOS
Chroma DB (or Chroma) is an open‑source vector‑database built for AI/LLM applications. • Stores dense embeddings (vectors) and...

How to cache in a nextjs application?

Updated: 2/6/2026, 3:07:20 AM

Here is how to implement an in-memory cache in a Next.js application with a one-hour expiration time.

⚠️ Important: The "Serverless" Caveat

Before implementing, it is crucial to understand how Next.js hosting works:

  • Vercel / Serverless: In-memory cache resets every time your server "spi...

Improve nextjs compilation time in local development

Updated: 1/15/2026, 1:55:39 AM

Of course. A slow Next.js compilation on a Mac is a frustratingly common issue. The causes can range from simple configuration oversights to deeper system-level problems.

Let's break down the solutions, starting with the quickest and most impactful wins and moving to more advanced diagnostics.

--...

Data types in Rust

Updated: 12/28/2025, 1:10:56 AM

Rust is a statically-typed language with a rich set of data types. They are broadly divided into scalar and compound types. Additionally, Rust provides custom and special types. Here's a breakdown:

🔹 1. Scalar Types

Represent single values.

✅ Integers

Signe...

Outbox pattern

Updated: 11/24/2025, 5:12:32 AM

The Outbox Pattern is a design pattern commonly used in distributed systems to ensure reliable message delivery (especially for events) while maintaining data consistency across service boundaries. It's especially useful when you want to guarantee that an event is published to a message ...

GitHub workflow using AWS copilot deploy

Updated: 11/22/2025, 5:45:17 AM

Setting up preview deployments using AWS Copilot involves dynamically creating isolated, short-lived environments (per-branch or per-PR) to preview changes before merging into mainline. You can achieve this with Copilot's environment and service management, combined with database schema clon...

Detect circular dependency in JSON schema

Updated: 10/28/2025, 5:57:04 PM

Detecting circular references in JSON Schema—especially ones like {"$ref": "#"} which refer back to the root—is important to prevent infinite loops when validating, parsing, or traversing the schema. In your case, the schema references itself directly via "$ref": "#", creating a circular dep...

SVG vs Canvas

Updated: 10/16/2025, 3:39:43 PM

TL;DR

  • SVG shines up to ~500 – 1 000 simple DOM nodes (paths, circles, rects, text). Beyond that you’ll start seeing noticeable slow‑downs in most browsers, especially on low‑end devices.
  • Canvas becomes the safe bet once you regularly draw > 1 000 “objects” (or the same obj...

WebRTC vs WebSockets

Updated: 9/27/2025, 6:15:22 PM

TL;DR

Feature WebRTC WebSockets
Primary purpose Real‑time peer‑to‑peer audio, video, and low‑latency data streams (e.g., video chat, screen sharing, online gaming). Full‑duplex client‑to‑server messaging (e.g., chat, ...

NextJS meta tags with the Head component

Updated: 3/7/2025, 2:57:37 AM

To add meta tags for a specific page in a Next.js app using the app router (introduced in Next.js 13), you will typically use the Head component from next/head. However, with the app router, the way you structure your pages and handle meta tags can differ slightly from the pages router.

H...