This is a hobby ASP.NET Core Web API project for rendering Buddhabrot images in parallel. It's written in C# and uses Docker to store images to SQL Server and log to Seq. The sample image was originally 4096x4096 with 200,000,000 sample points and 1,000 maximum iterations. It took about four minutes to plot on an eight core machine.
The plotting is currently noisy and I'm still tinkering with how to achieve the really cool images that you see in other people's projects. This is a work in progress.
The API offers a controller for creating Mandelbrot and Buddhabrot plots and retrieving images. Because the plotting process is a potentially long-running operation, plot requests are placed in a database queue and serviced individually. The plot creation response includes the plot's database ID, and the image can be retrieved by that ID. If the image plot is complete, a PNG image will be returned, otherwise it will respond with HTTP 202 Accepted.
Please note that the database is dropped and created every time the app runs. I haven't yet worked out how to stand up the database and run creation scripts in a separate service.
No default password is configured for the SQL Server container; you'll need to set one, and also include it in the API project's connection string.
The SQL Server container is configured to read the sa user's password from the
MSSQL_SA_PWD environment variable. You can create an .env file in the solution
directory to set your password:
MSSQL_SA_PWD=MySecretPasswordThe API project's connection string is configured to connect to the SQL Server
container, but doesn't include the password. You can add your password to the
DefaultConnection string in appsettings.json, or set a user secret called
DbPassword that will be read at startup.
dotnet user-secrets set "DbPassword" "MySecretPassword"