Briefly describe the architecture of the accounts receivable project.
Intern
160
Golang
8397
379
What was the profile of read and write load for these storages: how many requests per second?
Middle
160
What was the largest amount of data you worked with, and how many read/write requests were there?
Senior
158
Why did you decide to use LLM instead of just logic in code?
Intern
157
Can you briefly describe your experience? What is your main programming language? How many years of experience do you have in industrial development?
Senior
157
How does JWT differ advantageously from storing sessions on the server?
Intern
156
// code snippet for the best() function // with error handling for no backend available
Middle
155
func Pipe(p Producer, c Consumer) error { // TODO buf := make([]any, 0, MaxItems) cookies := make([]int, 0) flush := func() error { if len(buf) == 0 { return nil } if err := c.Process(buf); err != nil { return err } for _, cookie := range cookies { if err := p.Commit(cookie); err != nil { return err } } buf = buf[:0] cookies = cookies[:0] return nil } for { items, cookie, err := p.Next() if err != nil { flush() return err }
Middle+
153
How much memory is initially allocated for the buffer?
Middle+
153
What is the main programming language you use? Do you use C++ or Python?
Middle+
153
Describe the algorithm for solving the maxSegment problem.
Senior
152
Why was the backend.Invoke call moved outside the mutex?
Middle
152
The load balancer should understand that the backend responds with errors, and after exceeding a threshold for a certain period, exclude it from balancing (Circuit Breaker).
Senior
150
What will happen if Consumer.Process returns an error — will the data in the buffer be lost?
Middle+
150
Given a string S, count the number of substrings in this string that contain all characters from this string at least once. Examples: "abca" -> 3 // abc, bca, abca "aa" -> 3 // aa, a, a, "ffg" -> 2 // ffg, fg
Senior
149
Where do you live, where are you located?
Senior
147
Given a string of characters, find the number of index pairs i and j (i <= j) between which there are no repeating characters, inclusive. For the string "aba", the answer is 5: [0, 0] ("a") [0, 1] ("ab") [1, 1] ("b") [1, 2] ("ba") [2, 2] ("a") For the string "acbb", what is the answer?
Intern
147
What programming languages, besides Go, do you use for yourself or in commercial development?
Middle
147
What is the maximum number of requests per second you currently handle under high load?
Senior
147
/* We need to transfer data from a certain source to a consumer. The source provides data in small batches (~tens of records), while the consumer works more efficiently with larger batches (~thousands of records). A real-world example is transferring data from Kafka queues to a Clickhouse database. Source: - Conditionally infinite. - The source never returns more than MaxItems records per call to Next. - During a single "session" (one call to the Pipe function), the source returns new data on each Next call. - However, after a restart, the source resumes from the last "confirmed" position, set by a cookie. Therefore, *each* cookie value returned by Next, after data is saved in the receiver, must be fixed with a Commit call, strictly in the same order they were returned by Next. Receiver: - Cannot process more than MaxItems at once. The task is to implement the function func Pipe(p Producer, c Consumer) error which reads data from the source, groups it into a buffer of size not more than MaxItems, and saves it to the receiver, then commits the progress in the source. */ const MaxItems = 9999 // Producer interface // Next returns: // - batch of items to be processed // - cookie to be committed when processing is done // - error // Commit is used to mark data batch as processed // type Producer interface { Next() (items []any, cookie int, err error) Commit(cookie int) error } type Consumer interface { Process(items []any) error } func Pipe(p Producer, c Consumer) error { // TODO }
Middle+
145