Como se preparar para entrevistas na Databricks

+14

What project are you most proud of?

+10

Design a Job Scheduler

Design a distributed job scheduler that can handle high-throughput job processing (10,000+ jobs per second), support both scheduled (cron-based) and ad-hoc job execution, include retry mechanisms for failed jobs, and maintain execution history for up to one year.

+8

Design a Chat/Messaging System

Design a real-time messaging system like WhatsApp or Facebook Messenger that supports 1:1 and group conversations, message delivery status tracking, user presence features, conversation history, and can scale to handle millions of users.

+5

Describe experience working on a complex project

+2

Tell me about a project of your choice and its challenges

Design a Key-Value Store

Design a distributed key-value store that supports persistent storage with append-only file operations, handles both read-heavy and write-heavy workloads with strong consistency, and can manage large values (up to 2GB) that cannot fit entirely in memory.

Leetcode 1293. Shortest Path in a Grid with Obstacles Elimination

Find the minimum number of steps from the top-left to bottom-right in a 4-directional binary grid if you may remove up to k obstacles; treat each position together with remaining eliminations as the state and perform a shortest-path search (BFS) over that expanded state space, returning the step count or -1 if unreachable.

Design a stock trading platform

Design a simplified stock trading platform that supports limit orders for buying and selling stocks, with basic portfolio tracking capabilities at small scale (100 writes per second).

Design Typeahead Search

Design a typeahead search system that displays real-time search suggestions as users type their queries. The system should focus on the retrieval and display of non-personalized recommendations.

Design Slack

Design a messaging platform like Slack that supports real-time messaging through direct messages and channels (public/private), message threads, new message indicators, and persistent message storage.

Design an Online Bookstore

Design a system for selling physical books through a website that allows users to browse catalogs, search for books, make purchases, and manage inventory.

Design a Distributed File System

Design a hierarchical distributed file system that supports immutable file storage and mutable directory operations, with APIs for file upload/retrieval, directory management, and deletion across hundreds of petabytes for thousands of customers.

Leetcode 348. Design Tic-Tac-Toe

Implement a Tic-Tac-Toe class for an n×n board that supports making moves and immediately reports whether a player wins; the key challenge is designing state (e.g., per-row, per-column and diagonal counters) to detect a win in O(1) time per move without scanning the whole board.

Design an Ad Budgeting System

Design a system that allows companies to set budgets for ad campaigns across different regions, charges based on user clicks, and manages budget allocation when ads are displayed.

Design a Solution for the Noisy Neighbor Problem

Design a cloud resource management system that prevents noisy neighbor problems by isolating tenants and managing resource contention between multiple clients sharing VMs and other infrastructure.

Design a visa payment network system for transaction processing

Design a payment network system that processes credit card transactions between merchants and issuing banks at scale. The system should handle transaction routing, bank connectivity, failure scenarios (retries, idempotency), and network outages.

Design a Book Seller Platform

Design a book marketplace platform that connects customers with multiple book sellers, allowing customers to submit purchase requests with their maximum price and automatically finding the best deal from registered sellers. The system should handle seller registration with varying APIs, support both synchronous and asynchronous processing, and scale to 10,000 queries per second.