Özkan Pakdil Software Engineer

Green build, slow pages.

NVIDIA offers free access to their powerful Nemotron models through their NVIDIA Build platform.

In the world of software engineering, we often obsess over the “Testing Pyramid.”

After setting up CUDA on my other laptop, I moved to a different(older) machine that doesn’t have an NVIDIA GPU.

Setting up NVIDIA CUDA on Debian 13 (Trixie/Sid) to run Large Language Models (LLMs) can be a bit of a journey, especially if you’re transitioning from the default open-source drivers to the proprietary stack required for GPGPU workloads.

Note: These are suggested optimizations I have not personally tried yet.

I have been using Atlassian MCP with internal Confluence and Jira, and it has been wonderful.

Have you ever wondered exactly which files are being hammered by your Linux system in real-time?

Introduction Today I’m excited to announce the addition of Bun to our microservice framework benchmark suite.

The Spark The other day I came across a fascinating post on Substack by Skilled Coder about Java data structure performance.

Why this post I started this mini‑project after seeing a common roadblock: PKIX path building failed when calling HTTPS services with OpenFeign.

Introduction Test results for this benchmark run → Over the last two days, I’ve expanded our microservice framework benchmark suite to include two new contenders: Golang and Express.js.

So I got my Mac Mini M4 from Amazon for £500 and started using it.

From Frustration to Breakthrough: Running macOS on KVM For years, I chased the dream of running macOS in a virtual machine.

Why I built Paint Whenever I wanted to make a very small edit on my Debian laptop, crop a screenshot, add a quick arrow, or block out a small area, the system only had GIMP for editing images.

Quick numbers (avg; smaller is faster) I (imperative nested): 3.28 µs I2 (imperative freq-map): 1.93 µs F (streams grouping): 127.37 µs FP (parallel streams grouping): 599.28 µs Winner: I2 - imperative freq-map Note: These are sample numbers from the run…

In 2004, I was a new math graduate(Junior Dev) working on an in‑house CRM that was evolving into an ERP.

In short Run the app java -agentlib:native-image-agent=config-output-dir=.

This guide walks you through running PostgreSQL in Testcontainers with SSL enabled and client-certificate authentication (verify-full).

When it comes to preparing documents for important applications like the UK’s ILR (Indefinite Leave to Remain), efficiency and ease of use are everything.

PostgreSQL 🐘 is a robust database, but its MVCC (Multi-Version Concurrency Control) design can sometimes lead to a subtle issue: table and index bloat.

Modern servers are expected to push hundreds of gigabits per second while keeping latency low and CPU use manageable.

Junie is intellij`s AI agent, which is very helpful for working on code, I find it better then github copilot because its taks planning and implementation is more helpful then github copilot for me.

Today, I’m diving into Distinguished Name (DN) authentication-a powerful feature that enables certificate-based authentication when the Common Name (CN) in your client certificate doesn’t match your PostgreSQL username.

When implementing secure PostgreSQL connections, certificate creation forms the foundation of your PKI infrastructure.

Mutual TLS (mTLS) for PostgreSQL provides strong, passwordless authentication and encryption.

🚀 The Pagination Pitfall: A React + Spring Boot Cautionary Tale The Setup: “It’ll Be Fine…” A few years ago, I was working on a dashboard application with a React frontend and a Spring Boot backend.

1. pg_stat_statements Extension that tracks execution statistics for all SQL statements (execution count, total time, etc.).

Client certificate authentication in PostgreSQL provides a secure, passwordless way to authenticate users.

PostgreSQL 18 Beta 1 - New Features and Breaking Changes Source: GitHub - PostgreSQL 18 Beta 1 New Features Overview PostgreSQL 18 introduces over 200 new features and changes.

My Journey with Junie: A Game-Changer for Developers Over the past three weeks, I’ve been extensively using JetBrains Junie, and I’m genuinely impressed with how it has transformed my development workflow.

In July 2015, I packed my bags and left Istanbul for a new chapter in Wrocław, Poland, to join Credit Suisse.

I have an old Huawei laptop that was originally running Windows 10.

For years, I’ve been using Jekyll to power my blog at ozkanpakdil.github.io.

Prologue: The Era of WebLogic and Apache Mod_WebLogic It was 2012.

I am using Fail2Ban for around 12 years now, maybe more.

Today I needed to check which ports are open on a remote server to ensure that the services I need are running and accessible.

When building Spring Boot applications, handling concurrent API calls efficiently is crucial to ensure optimal performance and scalability.

Fillfactor in PostgreSQL is a parameter that sets the percentage of a data page to be filled with rows, leaving space for future updates to minimize page splits and improve performance on frequently updated tables.

Fine tuning and optimizing the fill factor in PostgreSQL can significantly impact the performance of your database.

“Load balancing” can be explained as maintaining any workload.

Spring boot is the most famous java framework, and I have been looking for a simple way to serve a java app on a hosting service(not dedicated which is very expensive not AWS/Azure which are too complicated), Most shared hosting does not support java apps,

I have this side project with me since 2007, it is an one file php website with sqlite db and some pictures and js and css.

Here is a summary of JetBrains developer stats of 2024.

I wrote this arti warp server for running whois via TOR network, Arti is CLI tool which has arti_client library inside for connecting the network, my main target to dockerize this for easy deploy to koyeb.com I used docker init to create Dockerfile and ot…

PostgreSQL has query execution plans configured as extension, meaning they do not come out of the box we need to configure it, For on-prem or owning server you can check this link which tells how to configure it.

I was thinking on this question How does HashMap handle collisions internally?

FFM is the new API trying to replace JNI and jep is here It is basically calling functions outside of JVM or accessing memory not managed by JVM.

Whenever I search anything on the start menu it triggers an internet search at the back and brings some results and suggestions from web, I use browser to do internet things, when we start mixing that to regular windows programs that slows down the comput…

I have been using Google Programmable Search Engine on my blog, but I found that it doesn’t work quite as I expected.