Blog | Fahim Imam - Software Developer

Short write-ups about things I’ve figured out — usually the hard way. Mostly Go, Linux, and deployment oddities. Each post is a real lesson from a real project, not a “10 things you didn’t know about X” roundup.

You’ll see a lot of posts about the lunch-tracker backend and the portfolio itself — those two systems are where most of the work happens.

Looking for something specific? Hit /search/, or browse by tags.

workflow

Start a new post

Run the command, edit the scaffolded file, flip draft: false. The archetype handles every field the rest of the site reads.

hugo new blog/your-slug.md

Show the archetype template

---
title: "{{ replace .File.ContentBaseName "-" " " | title }}"
date: {{ .Date }}
draft: true
summary: ""
tags: []
categories: ["Blog"]
series: ""
series_part: 0
cover: { image: "", alt: "" }
ShowToc: false
hideFromSearch: false
---

Write your post body here.

Conventions:

- One paragraph per line — the renderer doesn't care, but diffs do.
- Wrap code blocks with triple backticks and a language tag for
  syntax highlighting.
- Cross-link to a project page with `/projects/<slug>/` (host-relative,
  works on both domains).
- If the post is part of a multi-part series, set `series` to the series
  title and `series_part` to the position (1-indexed). The post_meta
  override renders this as a `Part N of <Series>` badge under the title.
- If the post is the canonical index for a series (the "table of
  contents" page), leave `series_part: 0`.
- Set `hideFromSearch: true` for posts that are stubs or in-progress
  notes you don't want showing up in `/search/`.
- Set `ShowToc: true` for posts long enough to benefit from a heading
  sidebar (usually > 1000 words).
- The first paragraph is excerpted into the list-card preview if you
  set `summary`, otherwise the renderer falls back to the first
  ~160 chars of the body.

Edit the archetype on GitHub →

The bug that locked every visitor to one domain

Hugo’s baseURL makes every internal link absolute. That’s fine for one domain. The moment you serve the same site from two domains, it’s a navigation bug.

Atomic writes in Go: temp file, fsync, rename

Every write to data.json in lunch-tracker goes through a temp file in the same directory, an explicit fsync, then a rename. Three lines of reasoning turn that into correctness.

60 forced reflows a second: fixing the matrix rain

The first version of the matrix-rain canvas called getComputedStyle() every animation frame to read the active –neon-blue token. Three small changes turned 60 reflows/sec into zero.

Optimizing VPS Deployment: Binary Uploads vs Docker

How I optimized my VPS deployment strategy to save resources