What indexes do you know and which ones have you used?
Senior
184
Golang
8397
379
Why did you use Mutex instead of Atomic for the counter?
Senior
183
Tell me about the team: which team you worked in, its composition and size.
Senior
183
```go type User struct { ID int Name string } var ( dbHits int ) func getUserInfoFromDB(id int) User { time.Sleep(100 * time.Millisecond) dbHits++ return User{ID: id, Name: fmt.Sprintf("User-%d", id), } } func main() { var wg sync.WaitGroup for i := 0; i < 5; i++ { wg.Add(1) go func(i int) { defer wg.Done() fmt.Println(getUserInfoFromDB(i)) }(42) } wg.Wait() fmt.Println("DB hits:", dbHits) } ``` ```go func main() { var wg sync.WaitGroup j := 12345 for i := 0; i < 5000; i++ { wg.Add(1) go func(i int) { defer wg.Done() once.Do(func() { user = getUserInfoFromDB(42) }) fmt.Println(user) }(j) } wg.Wait() fmt.Println("DB hits:", dbHits) } ``` (There is no explicit question text, but the code suggests a task related to concurrency, synchronization, and minimizing database hits by using sync.Once or similar techniques.)
Middle+
183
If you looked at the warehouse leftovers, did you key in specific SKUs?
Middle+
183
What challenges have you faced when working with Kafka?
Middle+
181
What are your financial expectations? Name the minimum and comfortable levels.
Senior
181
Tell us a little about yourself and your last place of work. What do you do?
Senior
178
Why does a B-tree work well for inequality and range queries?
Middle+
178
How have you interacted with data sources? Did you provide API endpoints, write to Kafka, or read from Kafka?
Middle+
177
Are you referring to ERP, 1C, and WMS as the platform?
Middle+
177
In what format did you transfer data via Kafka?
Middle+
176
Tell about your team composition.
Senior
176
What are the advantages of gRPC over REST?
Senior
175
Have you done sharding? What principle did you shard on?
Middle+
174
Tell about your main tasks at your last job and about a difficult task you managed to implement recently (what was, what you did, what happened).
Senior
172
Regarding motivation for transition — why did you decide to enter the market and consider other offers in general?
Middle+
172
Why did you choose gRPC? For what purpose?
Middle+
170
What indices have you used?
Middle+
169
What are your financial expectations? Name the minimum and comfortable levels.
Senior
168