Coexistence of legacy code in high-load systems https://sudonull.com/coexistence-of-legacy-code-in-high-load-systems
Learn why removing legacy code is risky and how to apply feature toggles for safe coexistence in Spring Boot. Strategies for middle/senior dev without refactoring risks. Practical examples.
Redis Lua Queue: partition order and worker pool https://sudonull.com/redis-lua-queue-partition-order-and-worker-pool
Implementation of Redis queue on Lua for strict order in partitions, shared worker pool, retries. Benchmarks, diagrams, code. For middle/senior dev — study and implement.
Kafka RabbitMQ Courses 2026: Yandex vs Slerm https://sudonull.com/kafka-rabbitmq-courses-2026-yandex-vs-slerm
Comparison of Yandex Praktikum and Slerm courses on Kafka, RabbitMQ. KRaft, highload, Docker stands, reviews. Choose format for middle/senior devs and start learning.