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How to Fix Git Pull Errors: Divergent Branches, Fast-Forward, and Unrelated Histories

7 min read
Serhii Hrekov
Senior Software Engineer & System Architect specializing in Python, Web Systems, Cloud Infrastructure & Automation

Running git pull is usually straightforward, but when your local repository's history doesn't align with the remote server, Git stops the operation to prevent you from losing your work. This results in errors like:

  • fatal: Not possible to fast-forward, aborting.
  • Hint: You have divergent branches and need to specify how to reconcile them.
  • fatal: refusing to merge unrelated histories

Because git pull is a shortcut for running git fetch followed by git merge, you must explicitly tell Git how to reconcile these divergent histories. This guide walk you through how to fix each of these errors.

Best Practices for Using Pydantic with Flask for Request and Response Serialization

5 min read
Serhii Hrekov
Senior Software Engineer & System Architect specializing in Python, Web Systems, Cloud Infrastructure & Automation

Pydantic is widely known for its powerful data validation and parsing capabilities using Python type hints. While it's most popular with FastAPI, it can be elegantly integrated with Flask to improve request validation, input parsing, and response formatting.

This article outlines best practices for combining Flask with Pydantic in a clean, maintainable way.

How to Display Blog and Documentation Counts in Docusaurus

6 min read
Serhii Hrekov
Senior Software Engineer & System Architect specializing in Python, Web Systems, Cloud Infrastructure & Automation

Adding a metric counter that displays the total number of blog articles and documentation pages is a great way to make a Docusaurus site feel active.

However, since Docusaurus compiles your pages statically, you cannot call internal hooks like useBlogPosts() inside static landing pages (such as src/pages/index.js). Doing so causes server-side rendering (SSR) failures during build execution on platforms like Vercel.

This guide provides a robust, build-time solution that counts flat files, subdirectories, and nested folders, saving the results to a static JSON file that can be safely imported anywhere in your project.

How to Display Blog Post Count on Docusaurus Homepage

4 min read
Serhii Hrekov
Senior Software Engineer & System Architect specializing in Python, Web Systems, Cloud Infrastructure & Automation

Many developers using Docusaurus want to display the number of blog posts they have-especially on their homepage. While this may sound trivial, doing it the right way (that works on both your local dev and production builds like Vercel) requires some thought.

Here's a simple and reliable way to implement this-no hacks, no unstable APIs, just clean engineering.

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