Setting up Ephemeral GPU workspaces in Modal for SGLang Development
How to setup a persistent workspace in Modal for doing development on GPU required apps.
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Personal website of Doğaç Eldenk.
Latest posts
Training language models on TPUs shouldn’t be scary
A practical guide to migrating your PyTorch training code to TPUs, with step-by-step debugging and optimization tips.
The Case Against Dependency Injection
I first met with Dependency Injection when I on-boarded myself on a large backend project that used Scala and Play framework. Over time, I have convinced myself that dependency injection is a good way of managing dependencies, but recently, I have come to the conclusion most of the time, it hurts more than it helps.
Rethinking Modern Asynchronous Paradigms
Most developers deal with some sort of asynchronous operation day to day. For most of us, it is I/O (Input & Output). A web developer does network calls, a systems developer could do some file operations, both are based on a submit and wait system, where program waits until some operation is completed. Different programming languages provide different ways to write code that is asynchronous, as…
Start with a clean slate: Integration testing with PostgreSQL
We have been using PostgreSQL as our primary database in production for 4 over years, however over time, as our database grew bigger and reached over 500 tables in a single monolithic application, we had to come up with smart ways to manage it. PostgreSQL is a database that is capable of handling hundreds of tables and billions of rows, however it doesn't necessarily mean it will be easy to…
Behind the 6-digit code: Building HOTP and TOTP from scratch
A while ago, I have started working on authorization and authentication at work. This taught me a lot about how modern authentication systems work. However I have always thought One-Time Password logins are the most mystical ones. A six-digit code that changes every time and can be used to verify your identity. How does the server know the newly generated one, and how is it really secure? In this…
On Decidability of Our Jobs and AI Replacing Software Engineers
Among all the occupations AI could replace, why are we focusing so much on Engineering jobs that require such expertise? I'm well aware of quality of the code AI writes, it is beyond useful but I don't see a world where that piece of code can find its way into the real world without the help of a software engineer. First, I would like to talk about the kind of jobs that I think AI will replace…
Supercharge Your Home Cluster Using Cloudflare Tunnel
I'm a big fan of self-hosting and DIY. Since writing my previous blog post about my self-hosting journey, I have learned some exciting new things that I want to share it with you. First, I’ll explain my initial server setup. Then, I’ll discuss why I looked for an alternative, and finally, I’ll show how Cloudflare Tunnels helped me achieve my goals.
I Like Self-Hosting
As I mentioned in my previous posts, I love open-source software. How do I prefer my open-source projects? Of course, self-hosted. I love self-hosting not because I save a ton of money on hosting or SaaS fees, but because it offers a fun and educational experience. However, in my professional life, I usually avoid self-hosting due to the responsibilities it entails and the total cost that…
Building an Authorization Framework with Armeria - a Case Study
I have been introduced to Armeria 2 years ago in 2022. Since then, it is my go-to framework for JVM based projects. Recently, I had some experience at work to build some shared authorization code in our system and I wanted to share my experience on how we built our authorization framework using Armeria by applying it to a theoretical scenario.