10+ Senior Magento Developer Interview Questions and Answers

Magento2 config can be set via XML files, database, or environment variables. Configuration can be automatically updated during deployment using tools like Ansible or Jenkins.

• Magento2 configuration can be set via XML files in the app/code/[Vendor]/[Module]/etc directory

• Configuration can also be set in the database using the core_config_data table

• Environment variables can be used to set configuration values

• Tools like Ansible or Jenkins can be used to automatically update confi...read more

MVC stands for Model-View-Controller. Magento uses MVC architecture to separate business logic, presentation, and user input.

• Model represents the data and business logic

• View represents the presentation layer

• Controller handles user input and updates the model and view accordingly

• Magento uses the layout XML files to define the view layer

• Magento's controllers are responsible for handling requests and responses

• Magento's models are responsible for interacting with the database and...read more

Plugins, events, dependency injection, and B2B development in Magento

• Plugins are modules that modify or extend the functionality of Magento

• Events are triggers that execute code when a specific action occurs in Magento

• Dependency injection is a design pattern that allows objects to be passed as dependencies rather than being created within a class

• B2B development involves creating custom features for business-to-business e-commerce websites

Mview files are used for indexing in Magento. Indexing techniques include full, partial, and delta indexing.

• Mview files are used to store data for indexing purposes.

• Full indexing updates all data in the index, while partial indexing updates only specific data.

• Delta indexing updates only the data that has changed since the last indexing.

• Indexing can be done manually or automatically based on a schedule or trigger.

Redis cache is an in-memory data structure store that can be used as a database, cache, and message broker.

• Redis cache is used to speed up the performance of web applications by storing frequently accessed data in memory.

• To modify or clear a customer based cache, we can use Redis commands like DEL, KEYS, and FLUSHDB.

• For example, to clear a customer's cache, we can use the command 'DEL customer:123'.

composer.json defines dependencies and composer.lock ensures their versions are consistent.

• composer.json lists the dependencies required by the project

• composer.lock ensures that the versions of the dependencies remain consistent across different environments

• composer.lock is generated automatically when dependencies are installed or updated

• composer.json can be manually edited to add or remove dependencies

• composer.lock should be committed to version control to ensure consistent...read more

To make a Magento module a global package for Composer, follow these steps:

• Create a composer.json file in the root directory of the module

• Specify the name, version, and type of the package in the composer.json file

• Add the module's files to the 'src' directory

• Create a 'vendor' directory in the module's root directory

• Run 'composer install' to generate the vendor/autoload.php file

• Publish the package to a repository like Packagist

• Use 'composer require' to install the package in o...read more

Magento patterns are design patterns used in Magento development to solve common problems and improve code reusability.

• Singleton Pattern: Ensures a class has only one instance and provides a global point of access to it.

• Factory Pattern: Used to create objects without specifying the exact class of object that will be created.

• Observer Pattern: Allows objects to subscribe and unsubscribe to events and be notified when those events occur.

• Decorator Pattern: Allows behavior to be a...read more

I am currently earning X amount and expecting Y amount for this position.

• My current CTC is X amount per annum

• I am expecting Y amount for this position based on market standards and my experience

• I am open to negotiation based on the overall package offered

Dependency injection in Magento allows for passing objects to a class instead of creating them within the class.

• Dependency injection is a design pattern used to increase code reusability and testability.

• In Magento, dependencies are injected into a class through constructor or method parameters.

• By using dependency injection, classes become more modular and easier to maintain.

• Example: Instead of creating a new object of a class within another class, the object is passed as a pa...read more