Are DevOps practices implemented in your project or is there a team that handles automation and integration of development and operations processes?
Junior — Middle
172
Java
14621
265
What changes in approach or solutions would you make in the last completed project, knowing what you know now?
Junior — Middle
169
How is the team structured and distributed in your project?
Junior — Middle
163
Write tests for the notification filtering system using JUnit 5 and Mockito, covering main scenarios: null/empty input, valid notification, sender blocking, channel filtering, deduplication.
Senior
161
What current projects or tasks have you been working on recently?
Junior — Middle
159
What is the time complexity of adding an element to a stack?
Junior — Middle
159
How is the time complexity of the get method in the HashMap data structure determined?
Junior — Middle
157
How does one microservice determine how to communicate with another in the Direct Call approach?
Junior — Middle
155
What data type can be used to store a sequence of elements in programming?
Junior — Middle
149
How can the implementation of the notification filtering system be optimized?
Senior
132
/* The company provides a mass notification sending service for other businesses. A product owner has approached you with a task to create a notification filtering system considering user preferences. ## Definitions Notification: - notification id - notification type (EMAIL, SMS, PUSH) - recipient (user id) - message text Recipient may have preference settings: - allowed notification channels (list of types) - blocked senders (list of sender ids) Notification sending history: - list of notifications sent to the user ## Important User settings and notification history are provided by other system components. You need to design contracts to obtain this data. Storage implementation is not required. ## Task Write a notification filtering system that: - takes a list of notifications for filtering and a sender id as input - excludes notifications that do not match user preferences - implements duplicate message protection, including messages sent in the last 24 hours. Duplicates are considered messages with the same id addressed to the same user - returns a filtered list of notifications ready to be sent. Sending notifications is not part of your task - another team will handle sending the filtered list. Your task is only filtering. */ class NotificationFilter { UserSettingsService userSettingsService; NotificationHistoryService notificationHistoryService; public ??? filter(??? senderId, List<???> msgs) { // TODO implement } } interface UserSettingsService { // TODO any functions } interface NotificationHistoryService { // TODO any functions }
Senior
131