Apr 3, 2011

Sprite cache invalidation

Vladimir Sidorenko

When we use css-sprites it's important to make browser cache them for longest period possible. On other hand, we need to refresh them when they are updated. This is especially visible when all icons are stored in single sprite. When it's outdated - entire site becomes ugly.

To solve this task I've implemented this small script that adds file's hash to url:

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Update

This is pretty old article. Now it's better to use something integrated to your build process - grunt, webassets, etc.

More thoughts

Feb 18, 2010Technology

User profiles with inheritance in Django

Usually users' profiles are stored in single model. When there are multiple user types, separation is made by some field like user_type.Situation is a little more complicated when different data is needed for each user type.In this article I'll describe how I solve this task.

Vladimir Sidorenko

May 9, 2018Technology

How to Generate PDF Files in Python with Xhtml2pdf, WeasyPrint or Unoconv

Programmatic generation of PDF files is a frequent task when developing applications that can export reports, bills, or questionnaires. In this article, we will consider three common tools for creating PDFs, including their installation and converting principles.

Vladimir Sidorenko

Mar 4, 2011Technology

Css sprite generation

I've created this small sprite to create css sprites. It glues images from directory directory into single file and generates corresponding css.

Vladimir Sidorenko

Jun 25, 2011Technology

Ajax blocks in Django

Quite often we have to write paginated or filtered blocks of information on page. I created a decorator that would automate this process.

Vladimir Sidorenko

Jan 22, 2017Technology

Django vs Rails Performance

This article is aimed for beginners, who are trying to choose between Ruby on Rails and Django. Let’s see which is fastest and why.

Vladimir Sidorenko

Sep 22, 2016Technology

Angular Form Validation

In this article, we will describe some useful scripts and directives we use with angular form validation in our projects.

Igor Tokarev

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