Cardlytics Software Engineer Interview Questions and Answers

Q1. Laravel framework question.
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Q1. Laravel framework question
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Easy leetcode data structure question

Q1. Write working code for calling a rest API, design rate limiter
Ans. 
Code for calling a REST API and designing a rate limiter
• Use a library like requests or axios to make the API call

• Implement a token bucket algorithm for rate limiting

• Set a maximum number of requests per second and queue excess requests

• Consider using a distributed rate limiter for scalability
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Q1. Design Database schema for instagram
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Design a database schema for Instagram.
• Create tables for users, posts, comments, likes, and follows.

• Use primary and foreign keys to establish relationships between tables.

• Store user data such as username, email, and password securely.

• Include fields for post content, location, and timestamp.

• Track likes and comments on posts.

• Implement a notification system for follows and likes.

• Consider scalability and performance in the...read more
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Software testing and coding related questions

Programming test coding

Q1. Myself intro HR subject question with answer
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Q2. Subject related questions
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Q3. What is types software testing
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Types of software testing include unit testing, integration testing, system testing, and acceptance testing.
• Unit testing focuses on testing individual components or modules of the software.

• Integration testing involves testing how different modules work together.

• System testing checks the entire system as a whole.

• Acceptance testing ensures that the software meets the requirements of the end users.
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Q4. What is unit testing
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Unit testing is a software testing method where individual units or components of a software are tested in isolation.
• Unit testing helps in identifying bugs early in the development process.

• It ensures that each unit of code is working as expected.

• Unit tests are automated and can be run frequently to catch regressions.

• Mocking and stubbing are often used in unit testing to isolate the unit being tested.

• Example: Testing a ...read more
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Q5. What is integration testing
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Integration testing is testing the interactions between different components/modules of a software system.
• Tests how well different parts of the system work together

• Ensures that data flows correctly between components

• Identifies any issues with communication or data transfer

• Examples: testing API integrations, testing database connections
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Q6. What is types of software testing
Ans. 
Types of software testing include unit testing, integration testing, system testing, and acceptance testing.
• Unit testing focuses on testing individual components or modules of the software.

• Integration testing involves testing the interactions between different components/modules.

• System testing tests the entire system as a whole.

• Acceptance testing is performed to validate if the software meets the requirements of the st
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Q7.  What is integration testing
Ans. 
Integration testing is testing the interactions between different components or systems to ensure they work together correctly.
• Integration testing verifies that different modules or components of a software work together as expected.

• It focuses on testing the interfaces and interactions between components.

• Examples include testing the integration between a front-end user interface and a back-end database, or between diff
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Q1. Difference between SQL and PL/SQL
Ans. 
SQL is a standard language for managing relational databases, while PL/SQL is Oracle's proprietary extension for SQL with procedural features.
• SQL is a standard language used to manage and manipulate relational databases.

• PL/SQL is Oracle's proprietary extension to SQL that adds procedural programming capabilities.

• SQL is used for querying and updating data, while PL/SQL is used for writing stored procedures, functions, a...read more
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Q2. What is trigger
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A trigger is a special kind of stored procedure that is automatically executed when certain events occur in a database.
• Triggers can be used to enforce business rules, perform data validation, or automate tasks.

• Examples of trigger events include INSERT, UPDATE, and DELETE operations on a table.

• Triggers can be defined to execute before or after the triggering event.
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Q1. Ledger details posting profile
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Q2. Fixed Asset project management and accounting
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