One possible question for a Java Interview could be: what can you tell me about the spring bean scopes? In Spring Framework we have 5 (five) bean scopes: SINGLETON which means that only one instance of a bean is allowed per container (in other words, per application); PROTOTYPE which meansContinue Reading

Spring RestTemplate is like a bridge between client application and server applications. It is used to call REST services and deal with outages. RestTemplate has an builtin HTTP client and it is able to send HTTP request to the endpoints.

Nowadays, there are two different kinds of databases: relational databases (aka, Oracle, Microsoft MS, IBM DB 2) document oriented databases (some lectures call them NO-SQL databases) (aka, Mongo DB, FileNet) Let’s go to the subject, Scaling a relational database There are three operations involved in scaling a relational database: sharding.Continue Reading

Microservice definition by Martin Fowler

Microservices is a type of architecture with a single goal: to avoid complexity. Most of the books define microservices as an alternative architecture for building applications, while they offer a great way to to decouple components within an application boundary. In microservice paradigm, each component is a full but miniature applicationContinue Reading

Angular is a client side framework. It is a front-end JavaScript framework used to build single page applications. In Angular everything is a component (the basic block of an Angular application), which represents one area of a functionality. Generally, a component is composed of three files: an HTML template whichContinue Reading

Java 8 was released on March 2014 and it is about functional-style programming. It proposes a set of new features: lambdas method references the stream api default methods in interface parameterization Lambdas Lambda is a technique to passcode to methods. Looking at lambda from the point of view of aContinue Reading