- author: Abhinav Tripathi - Microsoft Blogs
    link: https://devblogs.microsoft.com/cosmosdb/azure-cosmos-db-python-and-fastapi/
    title: Write a Python data layer with Azure Cosmos DB and FastAPI
  - author: Donny Peeters
    author_link: https://github.com/Donnype
    link: https://bitestreams.com/blog/fastapi-sqlalchemy/
    title: 10 Tips for adding SQLAlchemy to FastAPI
  - author: Jessica Temporal

this release is **compatibility** with Pydantic v1 and v2, to make sure your current apps keep working. Later there will be more focus on refactors, correctness, code improvements, and then **performance** improvements. Some third-party early beta testers that ran benchmarks on the beta releases of FastAPI reported improvements of **2x - 3x**. Which is not bad for just doing `pip install --upgrade fastapi pydantic`. This was not an official benchmark and I didn't check it myself, but it's a good sign....

Also, HTTP headers are case-insensitive, so, you can declare them with standard Python style (also known as "snake_case").

So, you can use `user_agent` as you normally would in Python code, instead of needing to capitalize the first letters as `User_Agent` or something similar.

If for some reason you need to disable automatic conversion of underscores to hyphens, set the parameter `convert_underscores` of `Header` to `False`:

=== "Python 3.10+"

But then the attackers try with username `stanleyjobsox` and password `love123`.

And your application code does something like:

```Python