Designing Data-Intensive Applications
Martin Kleppmann
Architecture & Philosophy
Building enterprise systems that scale. My approach combines battle-tested patterns with pragmatic engineering decisions.
Core Expertise
JavaSpring BootMicroservicesEvent SourcingDDDAWSSystem DesignCQRSKafkaPostgreSQL
Recommended Reading
Release It!
Michael T. Nygard
System Design Interview
Alex Xu
Building Microservices
Sam Newman
Flagship Business Products
Production-grade B2B SaaS solutions with paying customers
R&D Lab & Hobby Projects
Technology playgrounds for exploring new architectures and ideas
Lumina Clash
2025
Online browser game exploring real-time multiplayer architecture. Battle others, collect crystals, expand your base.
LaunchMMO
2025
Open-source framework for launching browser MMORPGs quickly. A technology playground for real-time multiplayer systems.
Nasza Rokietnica 🇵🇱
2025
Local community portal - experimenting with hyperlocal content and community-driven platforms.
Latest posts
See all posts
How I got my first paying SaaS customer in a boring niche
July 18, 2025
How I turned a stagnant product into my first revenue-generating SaaS by refining the offer, talking to real users, and running targeted ads.
My first AI agent: scans Reddit, sends me business ideas every morning
June 15, 2025
Built in 3 hours: an AI tool that searches Reddit for user pain points, scores them by business potential, and emails me a daily report. A simple but powerful way to spot ideas worth building.
What I’ve been up to lately, thoughts on AI, and 10 lessons from Pozitive Tech 2024
December 11, 2024
A personal update on recent business moves, reflections on the fast-moving world of AI, and key takeaways from the Pozitive Technologies 2024 conference-including some surprising facts you might not expect.
Building an indie MMORPG – part 7: Login, database persistence, monsters, items and obstacles
October 3, 2024
Implementation of registration and login system with a welcome screen. Game state persistence in MongoDB. Introduction of monsters with basic AI, item corpses, and tile-blocking obstacles like trees and rocks.
Building an indie MMORPG – part 6: Player vs Player combat, shared tiles, and new layout
August 1, 2024
First version of melee combat between players. Exception-based support for multiple players on one tile. New UI layout with left and right panels. Backend model restructuring and streamlined state management.
Building an indie MMORPG – part 5: smooth movement, player rotation & dynamic map loading
July 25, 2024
Fluid walking and rotation, real-time updates for nearby players, dynamic map chunk loading and cleanup, plus key backend threading and serialization improvements.