Blog Archives
1 2

15 slacknesses or lack of experience that can come back & bite you in the back

Production issues seek the attention of middle and top level management. Often these are intermittent issues that are harder to reproduce in lower environments without the right know-hows & tools. Some will shrug it off as “Cannot be reproduced“, … Read more ›...

Members Only Content
Log In Register Home


Auditing database record changes in Oracle

Q. What are some of the considerations in auditing database table data? A. Creating audit tables without any constraints to store record changes.  Audit tables are heavily hit with inserts, hence needs to have fewer indices if at all required. … Read more ›...

Members Only Content
Log In Register Home


Auditing, data retention and archiving interview Q&A

Q1 What are some of the considerations in auditing database table data? A1 1) Tables are created with auditable columns like created_by, created_date, updated_by, and updated_date, and synch_date or timestamp. You can also have a version column. Thes fields are handy to track changes. … Read more ›...

Members Only Content
Log In Register Home


How do you monitor the JVM?

Since Java SE 5.0, the JRE provides a mean to manage and monitor the Java Virtual Machine. It comes in two flavors: The JVM has built-in instrumentation that enables you to monitor and manage it using Java Management eXtension (JMX). … Read more ›...

Members Only Content
Log In Register Home


Monitoring/Profiling Java applications interview Q&A

Q1 How will you go about monitoring your Java application for potential performance or memory issues? A1 1. Visual VM for monitoring Java memory, CPU, threads, etc VisualVM is a visual tool integrating several command-line JDK tools and lightweight profiling capabilities. Designed for both production and development time use, …...

Members Only Content
Log In Register Home


QoS & SLAs interview Q&As on Availability, Serviceability, Fault tolerance & Disaster Recoverability – Non Functional Requirements

Q1. What are the system qualities that typically form a basis for QoS requirements? A1. Quality of service (QoS) covers Non Functional requirements such as As microservices use disparate datasources like SQL store, NoSQL store, Cache, Object store like AWS S3, … Read more ›...

Members Only Content
Log In Register Home


Splunk to analyse Java logs and other machine data

Q1. What is Splunk and where will you use it?
A1. Splunk is an enterprise-grade software tool for collecting and analyzing “machine data” like log files, feed files, and other big data in terra bytes. You can upload logs from your websites and let Splunk index them,

Read more ›



1 2

800+ Java Interview Q&As Menu

Learn by categories on the go...
Learn by categories such as FAQs – Core Java, Key Area – Low Latency, Core Java – Java 8, JEE – Microservices, Big Data – NoSQL, Architecture – Distributed, Big Data – Spark, etc. Some posts belong to multiple categories.
Top