Hacker News: elwray

New comment by elwray in "Callgraph.io – Visualize the code flow of complex databases and system softwares"

elwray — Tue, 07 Apr 2026 18:33:17 +0000

Hi HN,

I built Callgraph.io, a web app designed to visualize the code flow of complex databases and system softwares to help developers understand the source code.

The problem: I spend a lot of time diving into massive, complex codebases—particularly database like Valkey, PostgreSQL, RocksDB. Trying to trace execution paths for things like query parsing or B+ tree implementations across thousands of lines of C, C++, or Go can get overwhelming quickly. I constantly found myself lost in a maze of tabs and IDE windows just trying to hold the execution context in my head.

The Solution: I wanted a bird's-eye view. With, Callgraph.io I mapped the codebase of several databases and system softwares to create interactive visualizations of the execution flow. It makes it significantly easier to understand the relationship between different source files and functions. I also added a "one-click AI insight" feature to get a quick summary of what a function does, among other tools.

This is primarily aimed at engineers who are at the beginning of their journey into database internals, rather than seasoned experts.

I'd really appreciate your feedback!

Callgraph.io – Visualize the code flow of complex databases and system softwares

elwray — Tue, 07 Apr 2026 18:33:17 +0000

Article URL: https://callgraph.io/

Comments URL: https://news.ycombinator.com/item?id=47679457

Points: 1

# Comments: 1

New comment by elwray in ""The new Copilot app for Windows 11 is really just Microsoft Edge""

elwray — Tue, 07 Apr 2026 13:12:35 +0000

wow. I wonder how this was found out originally?

New comment by elwray in "I won't download your app. The web version is a-ok"

elwray — Tue, 07 Apr 2026 08:35:20 +0000

I wonder what happened to PWAs

New comment by elwray in "My Experience as a Rice Farmer"

elwray — Tue, 07 Apr 2026 08:09:38 +0000

I and my wife live in the city for work. While most people flock to the city and settle there as an upgraded life, we always felt empty here. Our dream is to buy a piece of land at our village and come back to our roots. I dont enjoy farming that much but my wife does. I however like the bliss of living close to nature. There is a river that flows nearby and taking a dip in that fills me with so much joy that I could never find anywhere in the city.

New comment by elwray in "A cryptography engineer's perspective on quantum computing timelines"

elwray — Tue, 07 Apr 2026 07:54:57 +0000

For the uninitiated, could you share your perspective on how feasible quantum computing is? Isnt it built on quantum entanglement which seems to break universal speed limit? Is this a feasible engineer or just a scientists imagination?

New comment by elwray in "Dear Heroku: Uhh What's Going On?"

elwray — Tue, 07 Apr 2026 06:50:56 +0000

I think its impossible for the Herokus and the digital oceans of the world to survive in the cloud world. They might be able to create better experience for customers but noone can match the networking that AWS, GCP and Azure can provide. Low latency will always win over better developer experience.

New comment by elwray in "The team behind a pro-Iran, Lego-themed viral-video campaign"

elwray — Tue, 07 Apr 2026 06:48:45 +0000

I hope we never get there but what do you think could push Israel into using Nukes?

New comment by elwray in "What being ripped off taught me"

elwray — Tue, 07 Apr 2026 06:01:18 +0000

Tried freelancing for a bit. Thought being my own boss might give me better mental health. I couldn't have been more wrong. The better part of my time was spent on convincing the clients, what is built is what they had described.