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aws-playground

AWS Playground: repository for tracking projects while learning AWS.

binary-file-download-rest-api

POC to download binary files by hiiting a rest API endpoint by modifying the HttpServletResponse object

blog-tutorials

:star: Codebase for various tutorials about Java, Spring Boot, AWS, Kotlin, and Testing

budget-pkce-spring-boot

Budget Proof Key for Code Exchange (PKCE) implementation using Java Spring-boot

camel-integration-spring-boot-kafka

Apache Camel Integration with Spring-boot and Kafka with one application serving as a producer and the other consuming the messages

checkbox-values-bitfield-enum-poc

POC to demonstrate storing values of all checkboxes displayed on an UI component, in a single column of a table instead of creating a separate table and mapping each checkbox as a column

code-examples

A collection of code examples from blog posts etc.

email-2fa-spring-boot

Email based 2FA implementation using Spring-boot and Java-mail API

entity-activity-automator

POC to demonstrate automation of entity fields such as created_at, created_by, updated_by using JPA @Embedded, @Embeddable and ThreadLocal

firebase-integration-spring-boot

Spring-boot application integrating with Firestore and Firebase Authentication to build a CRUD application.

just-another-testcontainer-integration

Backend application using Testcontainers for Integration Testing AWS S3, Azure Blob Storage, Kafka, MySQL, Egress calls including Chaos testing and Redis.

jwt-auth-flow-spring-security

Java backend application using Spring-security to implement JWT based Authentication and Authorization

kafka-java-spring-boot-poc

Kafka integration with Java Spring-boot with one application serving as a producer and the other consuming the messages

multiple-open-api-group-spring-boot

POC showing how to divide endpoint(s) among different Open-API screens

ngram-search-api

Search API with spelling correction using ngram-index algorithm: implementation using Java Spring-boot and MySQL ngram full text search index

otp-generation-validation-spring-boot-poc

Proof Of Concept showing OTP generation and validation technique using Java Spring-boot and LoadingCache Bean from google guava library to handle user's forgot-password flow

personal-finance-management-system

Personal Finance Management System using Java Spring boot and PostgreSQL: Submission for Technohack 2021: Spoon theme

quartz-scheduler-daily-mail-subscription-spring-boot

Daily mail subscription implementation using Java Spring-boot and Quartz Scheduler

rate-limiting-api-spring-boot

Rate limiting private APIs with Token Bucket Algorithm employing Bucket4J, Redis and Spring Security.

redis-caching-java-spring-boot

Backend application leveraging redis cache to reduce network calls and improve latency.

reflectoring.github.io

reflectoring blog

rsql-spring-boot

Representational State Transfer + Structured Query Language(RSQL): Demo application using RSQL parser to filter records based on provided condition(s)

spotifyapispring

Spring-boot MVC application consuming Spotify's REST API

spring-aop-custom-validation-on-jwt

spring-boot-admin-server-client-poc

Two Spring-boot applications registering themselves to an spring-boot-admin-server application as separate clients for the purpose of monitoring and managing the clients

spring-boot-apache-poi

list of reference POCs to work with excel files using apache-POI and spring-boot

spring-boot-freemarker-java-mail-api

POC that sends emails to user on account creation event occurrence: made using java spring boot, apache freemarker, java-mail-API, bootstrap email editor and spring events.

spring-boot-movie-finder

Application made with spring boot and thymeleaf as the templating engine, consuming OMDBs API to show movie details

spring-boot-qr-code-generator-reader-api

Spring-boot application exposing REST API endpoints to generate QR-code representing custom message and endpoint to read the decoded message using java and google's zxing library.

url-shortner-nosql-redis

Url-Shortner using java and NoSQL DB (Redis)