Xing's Blog

React Context

React useReducer hook

The CSS display property.

nc - Netcat utility

Flexbox is a one-dimensional layout method for arranging items in rows or columns. Items flex (expand) to fill additional space or shrink to fit into smaller spaces.

Spring RestController Usage

Basic Mockito Usage

Spring supports asynchronus processing using @Async annotaiton.

Java 8 introduces new Date Time API that is easier to used than the traditional java.util.Date class.

MongoDB Basics

Working with S3 using AWS SDK for Java 2.x

Multithread applications are more efficient but if shared resources are not protected, race condition may occur and cause unexpected behavior. We need to properly synchronize

sleep - delay for a specified number of seconds

Scheduling tasks in spring boot

Junit 5 Basics