convex-functions

To implement argument validation in Convex functions, use the `v` object to define argument schemas for your queries, mutations, and actions. This ensures type safety and prevents invalid data from entering your backend logic.

The best way to handle errors in Convex mutations and actions is by throwing a `ConvexError`. This allows you to manage error states gracefully and provide specific feedback when transactional data modifications or serverless executions fail.

Use Convex actions when you need to execute serverless functions that integrate with external APIs or perform multi-step operations. Use standard queries for reactive data fetching and mutations for transactional data modification.

Yes, you can integrate external API services within a Convex backend by using HTTP actions. These serverless functions allow you to connect to third-party services, such as notification providers, alongside your standard data logic.

You fetch real-time data using Convex queries by defining functions that read from your database. These query functions automatically update your application UI whenever the underlying data changes, providing reactive data fetching.