Technology Learning

What is AWS Savings Plans and how to reduce your Cloud Cost by choosing the right Savings Plans?

AWS Savings Plans are a pricing model offered by Amazon Web Services (AWS) to help customers save money on their cloud computing costs. They provide a flexible and cost-effective way .. Read more...

Oct 6, 2023

What is Kubecost and How to integrate with a kubernetes cluster?

Managing costs in a Kubernetes environment can be complex due to the dynamic nature of containerized workloads. Kubecost provides insights into resource utilization, allowing users to understand .. Read more...

July 8, 2023

How to get access to private key of the root certificate when using AWS Private CA?

When using AWS Private CA for issuing and managing digital certificates within your organization, you would not have access to private key of the root certificate. But this article would guide you to a way you can get access to it. Read more...

Mar 24, 2023

How to deploy maximum number of pods on Kubernetes (EKS) nodes

AWS EKS supports native VPC networking with the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. Using this plugin allows Kubernetes Pods to have the same IP address inside the pod as they do on the VPC network.

Jan 16, 2023

How to save data of your queues on to disk instead of in-memory in Python ?

In your python program you might need to save the data of your queues on to disk. One use case can be lets say you are streaming location data of a device to a server

May 26, 2022

How to build a distributed scalable system using Kafka ?

Apache Kafka can be used for both stream-processing as well as message processing. The following describes how we can build a distributed scalable message processing system with Kafka.

Oct 29, 2021

How to access Spring Beans from Non-Spring managed classes and pojos ?

You can easily access spring beans from other spring managed beans by simply Autowiring. But in some cases you may want to access Spring Beans from a non-Spring managed class or pojo.

Oct 3, 2021

How to fix "HikariPool Failed to validate connection. Consider using a shorter maxLifetime value"

com.zaxxer.hikari.pool.PoolBase: HikariPool-5 - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@7ae6d507 
(No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.

Aug 14, 2021

Simple API Security

How to secure your SpringBoot REST APIs simple way?
You can have a unique secure API key or token for all your services

Feb 27, 2021

Kafka Concepts

What is Kafka?
3 key capabilities of Kafka.
Kafka Topics, Partitions, Offsets.
Kafka Brokers, Producers, Consumers.
Kafka Broker Discovery and Zookeeper.

Feb 7, 2021

Rotation Monthly

How to pick a different item weekly or monthly.

August 26, 2020

Functional Programming in Java

Every Lambda expression has 3 parts:

() Argument List
-> token

August 9, 2020

Route53 (DNS Management)

What is Route53?

Route53 is AWS DNS product. It provides both public and private DNS services. It does both
Read more...

August 9, 2020

Autoscaling (DNS Management)

What is AWS Autoscaling?

Auto Scaling Groups. Common problems with Autoscaling and solutions Whenever your application is loaded up either with high traffic
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