Q1. How do you ensure code quality in your application? A1. Code quality means writing readable, maintainable and robust code, that conforms as much as possible to the style-guideline that is used, and that has as little as possible defects. … Read more ›...
Q1. How does Git differ from SVN (i.e Subversion)? A1. #1. Git is a distributed source control system meaning that there will be multiple client repositories. SVN is one repository with lots of clients. … Read more ›...
Have you seen job advertisements requiring Java candidates to work in low latency, high throughput, real-time and distributed systems with share-nothing architectures? Wondering what questions you will be asked? If you are an experienced Java developer targeting high paying skills then it pays to get a good handle on Java low latency interview questions &
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Q1 How do you remove the Control-M characters from a file?
A1 Control-M is a carriage return on keyboard. The ^M is the keyboard equivalent to \r. In a file originated from DOS/Windows the \r\n is used for an end of line carriage return, whereas in Unix it is \n for a new line.
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Apache Kafka is used in Micro Services Architecture (i.e. MSA) to Big Data & Low Latency application architectures. Q01. What is Apache Kafka? A01. Apache Kafka is a message broker like ActiveMQ, IBM WebSphere MQ, RabitMQ, etc. Apache Kafka is a distributed messaging broker with the purpose of being a...
This extends 8 Apache Kafka must-know basics interview Q&As – Part 1. Q07. What do you understand by the term “data is presented to Kafka as stream“? A07. This means either the Data is acquired from source systems in real time or as a scheduled extract process, … Read more...
This extends Apache Kafka must-know basics interview Q&As – Part 2. Q15. What do you understand by the terms Kafka Consumer Groups & group.id? A15. Consumers read from any single partition, … Read more ›...
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Q1. How would you go about designing a “farm animals” application where animals like cow, pig, horse, etc move from a barn to pasture, a stable to paddock, etc? The solution should also cater for extension into other types of animals like circus animals, wild animals, etc in the future....
Q1. What are some of the design considerations for a read heavy system? A1. Before designing any systems, one should gather the functional & non-functional requirements. The SLAs (i.e. Service Level Agreements) have to be clearly defined. A rough-cut capacity planning has to be done in terms of how many...
This extends High level & low level system design considerations for read heavy systems Q1. What are some of the design considerations for a write heavy system? A1. Before designing any systems, one should gather the functional & … Read more ›...
Java does not have a sizeof operator like C++ does. Java uses automatic memory management known as the Garbage Collection, hence it is not that important to evaluate size of various objects. But, for the purpose of learning & fixing any potential memory issues, I have used “jvisualvm”, … Read...
Q1. What are the key differences between SQL & NoSQL databases? A1. Now a days you have a choice which database to use based on your requirements. There are pros & cons for each database. SQL NoSQL (Not Only SQL) SQL databases store structured data & … Read more ›...
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