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Cluster load balancing in Node.js helps distribute incoming requests among multiple instances of the application to improve performance and reliability.
Cluster load balancing allows Node.js applications to utilize multiple CPU cores efficiently by creating child processes to handle incoming requests.
It helps prevent a single instance of the application from becoming overwhelmed with requests, leading to improved p...
CQRS is a design pattern that separates the read and write operations of a system, using different models for each.
CQRS separates the responsibility of handling commands (write operations) from queries (read operations).
It helps in achieving better scalability, performance, and maintainability by using different models for reads and writes.
For example, in a banking application, the write model may handle transacti...
Transactions in a database ensure that a group of operations are completed successfully or rolled back if any part fails.
Transactions help maintain data integrity by ensuring all changes are either committed or rolled back as a single unit.
ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in transactions.
Examples of transactions include transferring money between bank accounts or booki...
Durability ensures that once a transaction is committed, it will persist even in the event of a system failure.
Durability guarantees that once a transaction is committed, it will not be lost even in the event of a system crash.
This is typically achieved through mechanisms like write-ahead logging and periodic checkpoints.
Examples of ACID-compliant databases that ensure durability include PostgreSQL, Oracle, and SQ...
Replication in a database involves copying and distributing data across multiple servers to ensure redundancy and availability.
Replication involves creating multiple copies of the database on different servers.
Changes made to the primary database are then propagated to the replica databases.
Replication can be synchronous or asynchronous, with synchronous replication ensuring data consistency but potentially impact...
There are two types of pipes: named pipes and anonymous pipes.
Named pipes are used for communication between processes on different computers or on the same computer.
Anonymous pipes are used for communication between processes on the same computer.
Named pipes have a unique name and can be accessed by any process that knows the name.
Anonymous pipes are created by a process and can only be accessed by that process a...
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variables declared with var are hoisted to the top of their scope
Function declarations are hoisted before variables
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and should be avoided
I appeared for an interview in Jan 2025.
Cluster load balancing in Node.js helps distribute incoming requests among multiple instances of the application to improve performance and reliability.
Cluster load balancing allows Node.js applications to utilize multiple CPU cores efficiently by creating child processes to handle incoming requests.
It helps prevent a single instance of the application from becoming overwhelmed with requests, leading to improved perfor...
CQRS is a design pattern that separates the read and write operations of a system, using different models for each.
CQRS separates the responsibility of handling commands (write operations) from queries (read operations).
It helps in achieving better scalability, performance, and maintainability by using different models for reads and writes.
For example, in a banking application, the write model may handle transactions a...
Transactions in a database ensure that a group of operations are completed successfully or rolled back if any part fails.
Transactions help maintain data integrity by ensuring all changes are either committed or rolled back as a single unit.
ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in transactions.
Examples of transactions include transferring money between bank accounts or booking a ...
Durability ensures that once a transaction is committed, it will persist even in the event of a system failure.
Durability guarantees that once a transaction is committed, it will not be lost even in the event of a system crash.
This is typically achieved through mechanisms like write-ahead logging and periodic checkpoints.
Examples of ACID-compliant databases that ensure durability include PostgreSQL, Oracle, and SQL Ser...
Advantages of using a microservice architecture include scalability, flexibility, fault isolation, and technology diversity.
Scalability: Microservices allow for individual components to be scaled independently, leading to better resource utilization.
Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for faster innovation and reduced time to market.
Fault Isolation: If one micr...
Replication in a database involves copying and distributing data across multiple servers to ensure redundancy and availability.
Replication involves creating multiple copies of the database on different servers.
Changes made to the primary database are then propagated to the replica databases.
Replication can be synchronous or asynchronous, with synchronous replication ensuring data consistency but potentially impacting p...
CQRS works by separating read and write operations in a system, improving scalability and performance.
CQRS allows for optimized read and write operations by using separate models for each
It simplifies the design of the system by separating concerns
Improves scalability as read and write operations can be scaled independently
Enables better performance by allowing for optimized data storage and retrieval strategies
I applied via Company Website and was interviewed in Oct 2024. There were 2 interview rounds.
One question related to string manipulation which is of medium level difficulty.
I applied via LinkedIn and was interviewed in Jun 2024. There was 1 interview round.
Technical round: where they will ask you about the technical questions in your technology and few coding questions.
There are two types of pipes: named pipes and anonymous pipes.
Named pipes are used for communication between processes on different computers or on the same computer.
Anonymous pipes are used for communication between processes on the same computer.
Named pipes have a unique name and can be accessed by any process that knows the name.
Anonymous pipes are created by a process and can only be accessed by that process and it...
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variables declared with var are hoisted to the top of their scope
Function declarations are hoisted before variables
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and should be avoided
I applied via Naukri.com and was interviewed in Apr 2022. There was 1 interview round.
I applied via Naukri.com and was interviewed before Apr 2023. There were 3 interview rounds.
Major questions on JavaScript
Javascript questions along with related technology questions
Top trending discussions
Mine sweeper logic for a box click
To delete an element from a linked list, update the pointers of the previous node to skip the node to be deleted.
Traverse the linked list to find the node to be deleted
Update the 'next' pointer of the previous node to skip the node to be deleted
Free the memory allocated to the node to be deleted
I expect a competitive salary that reflects my skills, experience, and the industry standards for a Senior Software Engineer.
Research industry standards: For example, Glassdoor or Payscale can provide insights into average salaries for similar roles.
Consider my experience: With over 5 years in software development and expertise in multiple programming languages, I bring significant value.
Location matters: Salaries can ...
I applied via LinkedIn and was interviewed in Jul 2020. There was 1 interview round.
posted on 26 Feb 2021
I applied via Company Website and was interviewed before Feb 2020. There were 4 interview rounds.
Handled high pressure from client by prioritizing tasks and communicating effectively.
Identified critical issues and addressed them first
Communicated regularly with the client to provide updates and manage expectations
Collaborated with team members to delegate tasks and ensure timely delivery
Maintained a calm and professional demeanor to avoid escalating the situation
Release management is the process of planning, scheduling, coordinating, and deploying software releases.
It involves identifying the scope of the release and the features to be included
Creating a release plan and schedule
Coordinating with different teams involved in the release process
Testing the release to ensure it meets quality standards
Deploying the release to production
Monitoring the release to ensure it is stable...
Some of the top questions asked at the Synechron Senior Software Developer interview -
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