Topic2 published articles

Backend & Concurrency

High-throughput APIs, asynchronous runtimes, memory management, and networking.

9 min read

Building Resilient Event-Driven Microservices: Idempotency, Outbox, and Retries

How to prevent dual-write inconsistencies with the Transactional Outbox Pattern, guarantee exactly-once processing semantics through idempotency keys, and handle poison messages with DLQs.

#distributed-systems #system-design

Alexandre MercerPrincipal Systems Architect

Sep 18, 20261,436 views

Backend & Concurrency

12 min read

Linux Kernel Zero-Copy I/O: Deep Dive into sendfile(), splice(), and io_uring

How standard read()/write() system calls waste CPU cycles copying memory between user space and kernel space, and how modern zero-copy primitives dramatically boost network throughput.

#linux #performance

Alexandre MercerPrincipal Systems Architect

Sep 14, 20262,225 views