Hi Folks, This article summirizes few most important JVM options or JVM arguments that can be used to monitor/debugging purposes or essential running of java application in production. Setting Java Heap SizeGarbage CollectionGarbage Collection LoggingSet Free Heap RatioHandling out of memory errorTracing of ClassloaderSetting TimeZone Setting Java Heap Size: This is widely used and most … Continue reading Essentials JVM Options
Author: Anupam Pawar
Spring Security Login Form
Hi Folks, This article is quick overview of how to use Spring boot security basic login with In-Memory authentication. Its a web based application, when user browse the application a spring security based Login Form presented to the user. The Maven dependencies are: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> Once these dependenceis added … Continue reading Spring Security Login Form
Setting up Vault Server as Google Cloud Storage as Storage Backend
Hello Folks ! Recently I worked on task to isolate the passwords, database credentials from properties file and store it inside the vault.This post explain how to install and setup the vault server, store data as Key-value pair and usage of this vault data in spring boot application.Vault comes with many secrete engines (and so … Continue reading Setting up Vault Server as Google Cloud Storage as Storage Backend
Shutdown Spring boot Application Job Programatically
Hi Folks, Recently, one of my colleague approached me for following problem statement: He develop a spring-boot application which is running as a cron job. The job interval time say every 2 mins. The application pulls the number of records from upstream system and process each record in loop updating 5-6 transaction tables for each … Continue reading Shutdown Spring boot Application Job Programatically
How to generate Java – Spring Code from OpenAPI YAML spec
Hi Folks, Lets see quickly how can generate the Spring Boot code from OpenAPI Specification i.e. YAML file. Swagger is popular tool to design the API. I'm working on some integration project and my Business Analyst shared a OpenAPI spec which describe the name of API, input parameters , data types, the output response, http … Continue reading How to generate Java – Spring Code from OpenAPI YAML spec
AWS Certified Solution Architect Associate – 2019 SAA-C01
It is an immense pleasure to announce that recently I passed AWS Certified Solution Architect - Associate exam. I choose to have AWS certified because I have some working exposure on AWS while working on my some freelancing clients/project in past. AWS is also a leading cloud provider and so I decided to go for … Continue reading AWS Certified Solution Architect Associate – 2019 SAA-C01
ARDUINO – Sound Sensor example – IOT
Hello Folks, This is second article on IoT sensors today. Today I'm going to show how to connect and use sound sensor. Sound sensor used detect the sound in proximity. The Pre-requisite for this and next few articles are: 1. Raspberry Pi or Arduino Board - in simple words it a small size computer that … Continue reading ARDUINO – Sound Sensor example – IOT
Arduino Basics – Circuit and LED Blink Hello World -IOT
Hello Folks, Let's start with one of my core interesting subject i.e. IoT (Internet Of Things). Today I'm going to focused on how to start, what needs to get start with basics of IoT and hands-on "Hello World" example. The Pre-requisite for this and next few articles are: 1. Raspberry Pi or Arduino Board - … Continue reading Arduino Basics – Circuit and LED Blink Hello World -IOT
SpringBoot and RabbitMQ Messaging – AMQP
Today, will quickly go through Spring Boot Messaging implementation using RabbitMQ - AMQP. AMQP stands for Advanced Messaging Queuing Protocol. It is an open standard wire specification for asynchronous messaging based communication. It provides a description on how a message should be constructed. The widely used AMQP brokers are RabbitMQ, StormMQ and OpenAMQ. Brokers role … Continue reading SpringBoot and RabbitMQ Messaging – AMQP
Angular Compilation, Deployments and Performance analysis
Hi Folks, This article put some focus on Angular compilation and deployment in production. We will also look into angular.json file. Angular offers 2 ways to compile application Just-in-time (JIT) : complies app in browser at runtime andAhead-of-time (AOT): compiles app at build time JIT compilation is default compilation when ng build or ng serve … Continue reading Angular Compilation, Deployments and Performance analysis
anupam pawar 