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Data structuresPatterns to solve algorithm problemsBacktracking, DPGraphs, BSF, ...

Spring JDBCJPAMongoDBCouchbaseRedisCassandra

Spring Security featuresHow it worksBasic AuthenticationJWTOAuth2

Microservices ArchitectureMicroservice design patterns How to apply design patte...

Why JavaJDK, JRE,JVMJava basics (variables, data types, and operations)Classes a...

Features of the Spring Boot Basic Architecture of Spring Applications Spring Com...

What is Angular Angular core conceptsCreating UI  projects with Angular

What is TypeScript & how it worksTypeScript BasicsOOP in TypeScript

Features of the ReactCore ConceptsCreating projects using react

How  JavaScript  worksJavaScript basicsObjects and Classes in JavaScriptDOMModul...

What is GoHow Go worksGo basicsGoroutines

What is PythonHow Python worksPython BasicsOOP 

What is Kotlin &How it worksKotlin BasicsOOP in Kotlin