Why did you use a custom solution for charts instead of ready-made libraries (e.g., Grafana)?

Custom solutions for charts are often chosen over ready-made libraries like Grafana for several reasons:

• Design and UX requirements: Ready-made solutions may not allow flexible customization of the appearance and behavior of charts to meet unique product requirements.
• Performance: In some cases, custom charts are optimized for specific data and scenarios, reducing load and increasing responsiveness.
• Integration with business logic: Custom components are easier to integrate with internal APIs and specific data formats.
• Control over functionality: You can implement only the necessary features without excess code, reducing the bundle size.
• Licensing and cost: Using ready-made solutions may be limited by licenses or be costly.

For example, if you need to build an interactive chart with unique animations and specific data update logic, a custom implementation on D3.js or Canvas would be preferable.