521
Golang
8397
379
Explain what a goroutine is and how it is used in programming.
Junior — Middle
367
What is the difference between an array data structure and a slice in terms of usage and implementation features?
Junior — Middle
340
Why does a B-tree index have a complexity of O(log n)?
Senior
282
When should you pass context into the database in ExecContext, and when should you not?
Senior
272
Do you have experience working with banking processing or banking processing systems?
Middle+
264
Explain what is meant by the term 'heap' in the context of memory management in programming.
Junior — Middle
253
What is phantom reading and lost write?
Senior
248
What is the current offer amount you are considering?
Middle+
243
Calculate the load: we have 6 games per second and 80 moves per game — how many moves per second?
Senior
227
Why do we need Load Balancer and API Gateway — what do they do and what are they responsible for? Does the Load Balancer act as a rate limiter?
Senior
219
Which is better — modular monolith or microservices for a chess service?
Senior
218
How many years have you been developing in Go?
Middle+
217
Tell what blob storage is, what specific types exist, and what they store.
Senior
214
When is it appropriate to switch from monolith to microservices? At what RPS and under what conditions?
Senior
211
How to better organize the architecture of a chess service (like Chess.com) for Russia with 1 million users and 50k DAU, where a player plays 5 games a day, with profiles, matchmaking, and achievements?
Senior
209
What APIs have you worked with?
Middle+
208
What are sticky sessions and why are they needed for a connection to fall on one instance?
Senior
206
Do you understand how the principles of OOP are implemented in Go?
Middle+
201
How to store voice messages in messengers like WhatsApp? Why is it better to store images in S3 rather than in Postgres? What are the options for storing images in Postgres?
Senior
200