I have heard about Web push notifications and Service Workers many times, but I have never implemented them until the last week for Just Comments. So I decided to share my notes about this technology..

Jekyll is an engine which transforms your content into a static website. Learn how to add comment widget to your static site easily.

Static sites are great! They are easy to publish and maintain. You can scale a static website easily for millions of users. And hosting is normally quite cheap. Another advantage is the convenience of local development and and the possibility to preview any change before publishing. One of the challenges of static websites is adding dynamic content to the site. In this post we add comments to a static website.

As the follow-up to my previous post, I wrote a simple NodeJS server which demonstrates how to implement synchronization of concurrent requests so that certain parts of business logic are not executed twice.

In this post, I discuss the problem of duplicate requests in typical HTTP APIs and how to solve it.