Why 100% Synchronous Communication Can Destroy Your Microservices Architecture
If you use 100% synchronous communication (REST/OpenFeign/gRPC) between all microservices, the system will work…
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Java & interview insights
Understand Keycloak in depth with Large E-commerce Example
Most tutorials explain Keycloak poorly because they assume all applications share the same users.
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Java Optional Explained: of() vs ofNullable() vs empty() with Examples
Optional is used to avoid null-related issues and represent a value that may or may not be present.
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Master IntStream in Java: From Basics to Real Use Case
IntStream is a primitive stream in Java (from java.util.stream) that works specifically with int values.
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Can We Apply distinct() on All Streams in Java?
Short answer: Yes, but with an important condition.
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What is Boxing and Unboxing in Java? When to use it
Boxing means converting a primitive data type into its corresponding wrapper object.
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Java Streams Interview Trap: map() vs mapToInt() vs mapToDouble() Explained
If you’re working with a Stream<T> (objects), you must convert it to a primitive…
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