Tell me about a project at Avito — position (mid/senior), what tasks did you solve?

In a project at Avito in a mid/senior position, I worked on a system for processing large data streams using Golang. The main tasks included:

• Developing and optimizing microservices for processing and aggregating user data.
• Implementing high-load APIs with low latency.
• Working with message queues (e.g., Kafka) to ensure reliable data transfer.
• Optimizing memory and CPU usage, profiling, and eliminating bottlenecks.
• Implementing monitoring and logging for quick problem detection.

Example task: implementing a service that receives events from users, filters them according to specified rules, and forwards them to an analytics system. Goroutines and channels were used for efficient parallel processing.