Wunderman Thompson Commerce Senior Magento Developer Interview Questions and Answers

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 mo...read more

Custom attributes can be created in Magento Product, Customer and Sales.

• For Product: Use Magento's setup script to create a custom attribute.

• For Customer: Use Magento's customer setup script to create a custom attribute.

• For Sales: Use Magento's sales setup script to create a custom attribute.

• Custom attributes can also be created programmatically using Magento's API.

• Attributes can be added to attribute sets and used in ...read more

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.

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 An...read more

Magento uses various caching techniques to improve performance. We can control them through configuration settings.

• Magento uses full page caching, block caching, and session caching.

• Full page caching stores the entire page in cache to reduce server load.

• Block caching stores individual blocks of content in cache to reduce database queries.

• Session caching stores session data in cache to reduce database queries.

• Caching ca...read more

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 s...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 P...read more