Summary of "Что спрашивают на собеседовании GO-разработчика в 2025? Разбор всех вопросов!"

Overview

The video provides a comprehensive overview of typical interview questions for Go (Golang) developer positions in 2025. The content is based on the speaker’s experience with about ten full interview cycles for junior (Cinder) and mid-level roles at well-known companies.

Key Technological Concepts and Topics Covered

1. Go Language Fundamentals

Maps Keys, iteration order, checking key existence, map comparison, complexity of get/delete operations.
Slices Internal structure, length vs capacity, append mechanics and growth factor, passing slices to functions (by value/reference), copy function.
Goroutines and Channels Race conditions, deadlocks, writing to closed channels, lightweight goroutines vs system threads, context switches, stack vs heap, scheduler workings, preemptive vs cooperative multitasking, channel closing, select statement.
Sync Package Mutex, RWMutex, Sync Map and its purpose compared to regular maps.

2. Interfaces and OOP Concepts

Definition of interfaces.
Object-oriented principles and their implementation in Go interfaces.

3. [Databases](https://www.amazon.com/dp/1849513627?tag=dtdgstoreid08-20)

Relational (PostgreSQL) and non-relational (MongoDB).
Transactions and ACID principles (Atomicity, Consistency, Isolation, Durability).
Transaction isolation levels.
Indexes (primary, secondary, composite) and their purpose.
EXPLAIN function and normalization (normal forms).

4. Message Brokers

Differences between Kafka and RabbitMQ.
Core concepts: producer, consumer, partition, consumer groups, offsets, topics.

5. Containerization and Orchestration

Docker and Kubernetes: practical experience, configuration writing, deployment, CI/CD pipelines.

6. Networking and Protocols

HTTP vs HTTPS protocols.
TCP vs UDP transport protocols.
REST API principles.
Router functioning.
Differences between MAC and IP addresses.
Basic OS network organization.

7. Algorithms and Complexity

Types of encryption (symmetric, asymmetric).
Hash functions.
Algorithm complexity estimation.
Code review and optimization suggestions.

8. Architecture and Design Patterns

Microservice design patterns.
Data consistency and system dependency.
SOLID principles explanation and practical implementation.
Clean architecture.
Dependency inversion (example with Uber’s Fx library).
Transactional Outbox pattern for data consistency across systems.

Interview Tips and Strategies

When confident in a topic, elaborate broadly with related concepts, use cases, and edge cases to impress.
For unknown questions, try to rephrase or shift to a related topic you know.
Avoid guessing or providing incorrect answers; admit limited knowledge and express willingness to learn.
Senior interviews expect deeper knowledge and more complex explanations but cover similar topics.
Answering about 80% of questions is generally sufficient to pass.

Additional Resources

The speaker maintains a Telegram channel Ampilov Pro IT, where the full list of interview questions is posted.

Main Speaker / Source

The video is presented by an experienced Go developer who has undergone multiple interview cycles and shares personal insights and advice. The speaker’s Telegram channel is named Ampilov Pro IT.