If you visit this site, you are probably interested in protecting your personal data. I care about the privacy and security of my readers, so below you will find all information about cookies, processing personal data and all relevant functions and mechanisms on the site.

The administrator of the DevDiary blog is Piotr Wachulec, residing in Warsaw in Poland. To contact send an email to piotr (at)

Personal data is processed on this blog and cookies appear. Cookies are small files saved in your browser that facilitate the operation of the site and remember some of your activities. Thanks to this, I get help that is important to me in the development of my blog, such as collecting website statistics, enabling marketing activities, and for you using the website is more convenient and enjoyable. You can delete cookies at any time using the appropriate option of your web browser.

  • Google Analytics allows me to analyze website traffic and collect visit statistics. Anonymously counts, for example, how many subpages the user visits, how much time he spends on the site and from what region of the world. This allows me to analyze what content is the most interesting and attracts the most people, and this facilitates the further development of the blog and allows for better selection of content.

  • The Disqus system allows to place a comment under the entries. By using this comment system, you accept Disqus cookies and privacy policy. You can log in to your Disqus account at any time and delete your comments.

  • In some entries I put videos from YouTube and posts from Facebook, Instagram, LinkedIn or Twitter, that’s why the blog has cookies of these websites.

  • You can subscribe to the Newsletter, which is sent using the MailChimp system, originating in the United States. Email addresses and the name or nickname needed to send the message are saved. The database is profiled - for example, I can extract a group of people who did not open the last message. In the newsletter I send news related to the blog’s activities, but commercial and marketing information may also appear. You can always unsubscribe, for example, by clicking on the resignation link in the footer of each email. Learn more about Mailchimp’s privacy practices here.

  • On the DevDiary blog, some of these links may be so-called affiliate links. An affiliate link is a link thanks to which a company or a person whose subject or service I recommend on my blog knows that you have reached him / her / them thanks to me, in exchange for which I can receive some commissions. This has no effect on your purchases and product prices! 🙂 Information about your visit to my blog and clicks on the links is saved in your browser cookies. Of course, appropriate information will appear with each such link.

All these tools are used to contact the readers and to work on the blog. They enable website development. If you have any questions or concerns, please contact me by email at piotr (at)