Java

What formula is used to determine the number of brokers (nodes) when designing a fault-tolerant Kafka cluster?

Middle — Middle+

ОТП Банк

Почему важно переопределять методы equals и hashCode в Java?

Is it possible to send a separate message to a Telegram channel from a list of companies?

Junior — Middle

СБЕР Тех

What is the purpose of the @Bean annotation in Spring?

How does the class loading process occur in JVM during Java program execution?

Tell us about your experience working with the RabbitMQ queue system

Junior — Middle

Иннотех

Why is using parallel streams faster than sequential ones when calculating the sum of numbers from 1 to 100?

Junior — Middle

Альфа-Банк

Tell us about your achievements and successes in your professional field.

What type of tree is used inside the TreeMap data structure?

Junior — Middle

СБЕР

How many elements can Flux accept in Project Reactor?

How can an infinite loop be created using HashMap?

What are stored procedures and how can they be invoked via JDBC?

Why do string objects go into the string pool?

What data transfer protocols do you know?

Is using an object with Singleton scope considered best practice by default?

What are the stages of the Maven lifecycle and what happens at each of them?

How to create a custom annotation in Java?

What are the advantages of microservices architecture compared to monolithic?

What data structure is used to implement a dynamic array similar to ArrayList?

Junior — Middle

Aston

В чем различия между StringBuilder и StringBuffer в Java?