In the world of web development, one common task is to provide users with the ability to download multiple files as a single ZIP archive. This can be particularly useful when dealing with large datasets or when users need to…
AWS DynamoDB is a key-value and document database (read more about this type of database in my databases overview) managed by AWS. One of the operations that is not so easy to do there is changing a primary key in…
Generic types are commonly used in most modern programming languages. In the case of Java, they were added in Java 5 which was released in 2004. Even though it’s present in the language for many years, it still confuses some…
Choosing the right database may be obvious for you if you don’t have complex requirements and just need to store data in any way. In such cases it’s as simple as choosing the database you already know or one you…
Do you need a full history of changes in your data for audit or recovery from failure purposes? Time for Event Sourcing – a pattern that is changing the traditional way of data persistence from a simple always up-to-date current…
Form validation in Angular is a well-known mechanism to perform client-side validation. This way user receives rapid feedback about the data put into the form. It may spare a lot of time as form submission usually takes a few seconds…
Enum is widely used in Java to define fixed set of values. It provides more type-safety and increases code’s readability in many cases. Most people are also aware that it is a special kind of class that cannot extend any…