eGlu.tech
Notes on technology, design, and engineering.
Optimizing Hex Formatting
How a simple change from String.format to JDK 17's HexFormat removed a significant bottleneck in a high-throughput backend.
Apr 18, 2026How Smart is AI?
Can it design, or is it even good at pairing?
Apr 16, 2026Ai, Agents and the Refactoring Loop
After spending quite some time with ai tools; here are my takes. How it helps and how it slows down;
Apr 6, 2026Zero-Downtime Deployments with Iptables
A technical walkthrough of achieving zero-downtime deployments using iptables and conntrack for a performance-critical backend.
Mar 29, 2026ThreadLocal Optimizations and Project Loom
An optimization journey from identifying high-allocation hot paths with Async Profiler to leveraging ThreadLocal, and why Project Loom is forcing us to rethink these classic patterns.
Mar 22, 2026Java Exceptions Swallowed: The ThreadPool Trap
Debugging silent failures in asynchronous Java code and understanding why ThreadPools might be swallowing your exceptions.
Mar 17, 2026A Low-Level UDP Echo Server for NAT Traversal
Exploring XDP, iptables, and nftables to build a high-performance UDP echo server in the Linux kernel.
Feb 28, 2026Choosing Blog CMS
Choosing the CMS for this blog