webapplog [tech blog] – Book author Azat Mardan writes about apps, sta...

node-pg-migration is a useful library. You can add a constraint of a foreign key with a simple references property on the column. For example, you have table client_session with publishable_key column and you want to reference publishable_key column...

I recently needed to update the check constraint on a Postgres table column. This check does format validation similar to regex. This check was part of the CREATE TABLE statement meaning it was created with the table.
However, ALTER COLUMN is not supporting updates of checks. So what we need to do is to drop the constraint and create a new one. dropConstraint requires the name of the constraint, but the name is not obvious. This is because check was create with createTable...

As a startup founder, you might think that building an app, whether it’s for the web or mobile, is the only way to validate your business idea. However, that’s not necessarily the case. In fact, using messenger apps like WhatsApp or Telegram can be a...

React.js version 17 was released in October 2020 and introduced several new features and improvements. In this blog post, we’ll explore the major updates in React.js version 17.
No More Event Pooling
One of the most significant changes in React.js version 17 is the removal of the event pooling optimization. Previously, React.js used a technique called “event pooling” to reduce the number of event objects created by the browser. However, this technique...