How can the performance of SQL queries in a database be improved?
Junior — Middle
227
Java
14627
265
What other ways of connecting and initializing components in Spring Boot exist besides using starter dependencies?
Junior — Middle
227
Have you had experience working with databases that do not use a relational model?
Junior — Middle
226
What methods are used to increase throughput and horizontal scaling of distributed database systems?
Middle — Middle+
225
What components or objects can be available or interact during the execution of a method annotated with PostConstruct in Spring?
Junior — Middle
224
How do microservices interact with each other?
Senior
223
What is the average time complexity of search, insert, and delete operations by key in a HashMap?
Junior — Middle
223
The service is crashing with OutOfMemoryError in production. How to localize the problem?
Middle
223
How is the traceId unique identifier determined at the start of request tracing?
Junior — Middle
223
Can you explain the architecture and main components of the Kafka system?
Middle — Middle+
223
What are the differences between HashMap, ConcurrentHashMap, and SynchronizedMap?
Middle
223
Is it possible to ensure sequential message output from Kafka so that they are in the same order as they were written to the Topic?
Junior — Middle
223
What is the difference between using @Service and @Repository annotations in Spring Framework?
Junior — Middle
222
Have you ever had to choose or replace the technological tools or platforms used in a project?
Junior — Middle
222
Have you used tools for documenting REST API (Swagger/OpenAPI)?
Senior
222
Can it be said that Kubernetes is used in the current project and who exactly manages it?
Junior — Middle
222
What levels of transaction isolation exist?
Middle+
222
What annotations applied to classes are available for retrieval from the Spring ApplicationContext?
Junior — Middle
221
// get list of users who are in a group starting with "X" public List<User> consume(Stream<User> usersStream) { }
Senior
221
Have you used the @PostConstruct annotation in a Spring application?
Junior — Middle
219