Using PDAs for Data Storage

Program-Derived Addresses (PDAs)

Chapter 3: Using PDAs for Data Storage

PDAs are perfect for storing program state, such as counters or user data.

• Key Points:

  • PDAs function like regular accounts but are program-controlled.

  • Ideal for global or user-specific state.

  • Example: Incrementing a counter.

• Code Example:

#[account]
pub struct Counter {
    pub count: u64,
}

pub fn increment(ctx: Context<Increment>) -> Result<()> {
    ctx.accounts.counter.count += 1;
    Ok(())
}

• Interactivity: Simulate incrementing the counter and see the updated value.