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Contributing Writer
Pavel Zavialov is a Software Engineer specializing in high-load backend infrastructure, distributed systems, and API performance. With over eight years of experience, he has designed and scaled data pipelines and microservices in Go for major tech companies including Wheely, VK.com, and Wisebits. His engineering expertise spans across ride-hailing operations, large-scale social platforms, and machine learning infrastructure. The MongoDB polling architecture and monolith extraction detailed in th
A back-end team extracted notification delivery from a large Ruby monolith into a centralized Go service, only to discover that their shared RabbitMQ cluster could not reliably support the new workload. Hereβs how they solved the problem using MongoDB as a polling queue and the trade-offs that came with it. The Scaling Problem Inside the [β¦]
Jul 24, 2026 Β· 3 min