iCIMS Interview Questions, Process, and Tips

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Q1. LRU cache and its implementation
Ans. 
LRU cache is a data structure that stores the most recently used items, discarding the least recently used items when full.
• LRU cache stands for Least Recently Used cache

• It is typically implemented using a combination of a doubly linked list and a hashmap

• When a new item is accessed, it is moved to the front of the list. If the cache is full, the least recently used item at the end of the list is removed

• Example: If the c...read more
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Q1. What is transaction management and how is it handled in microservices
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Transaction management is the process of ensuring data consistency and integrity in a system.
• In microservices, each service has its own database, making distributed transactions challenging.

• Two popular approaches to handle transaction management in microservices are Saga pattern and two-phase commit protocol.

• Saga pattern involves breaking a transaction into multiple smaller transactions that can be rolled back individu...read more
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Q2. Statefull vs stateless
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Stateful vs stateless refers to whether a system retains information about the state of a user's interactions.
• Stateful systems store client session information on the server side, requiring more resources and making scaling more complex.

• Stateless systems do not store client session information, making them easier to scale and more fault-tolerant.

• Stateful systems are typically used for applications that require maintain...read more
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Q1. Discuss the types of Joins in SQL
Ans. 
Types of Joins in SQL include Inner Join, Left Join, Right Join, and Full Outer Join.
• Inner Join: Returns rows when there is a match in both tables.

• Left Join: Returns all rows from the left table and the matched rows from the right table.

• Right Join: Returns all rows from the right table and the matched rows from the left table.

• Full Outer Join: Returns rows when there is a match in either table.
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Q2. What are the ways to optimize Tableau dashboard?
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Optimizing Tableau dashboard involves improving performance, usability, and visual appeal.
• Limit the number of worksheets on a dashboard to improve performance

• Use filters and parameters effectively to allow for interactivity

• Optimize data source connections for faster loading times

• Utilize dashboard actions to create dynamic interactions

• Design with user experience in mind to ensure clarity and ease of use
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Q3. What are the different types of LOD functions? Give examples of situations where you used them.
Ans. 
Different types of LOD functions include INCLUDE, EXCLUDE, and FIXED.
• INCLUDE LOD function is used to compute the level of detail for a specific dimension while keeping all other dimensions constant.

• EXCLUDE LOD function is used to compute the level of detail for all dimensions except the specified dimension.

• FIXED LOD function is used to compute the level of detail independently of the visualization's dimensions.

• Examples...read more
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Q1. He asked about the introduction
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Q2. About the projects that I have worked on
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Q1. Casual discussion and previous experience
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Q1. Technical and previous experience
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Q1. Current compensation and expectations and negotiation
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