KENECHUKWU DevAsmodeus07

## validator_error_handling.rs
use std::sync::{Arc, RwLock, PoisonError};

use std::collections::HashMap;

// ❌ BAD: Crashes on any error

fn process_transaction_bad(

    accounts: &HashMap<String, u64>,

## validator_rwlock_example.rs
use std::sync::{Arc, Mutex, RwLock};

use std::thread;

use std::time::Instant;

// ❌ BAD: Using Mutex (blocks all readers)

struct ValidatorStateMutex {
	use std::sync::{Arc, RwLock, PoisonError};

	use std::collections::HashMap;

	// ❌ BAD: Crashes on any error

	fn process_transaction_bad(

	accounts: &HashMap<String, u64>,
	use std::sync::{Arc, Mutex, RwLock};

	use std::thread;

	use std::time::Instant;

	// ❌ BAD: Using Mutex (blocks all readers)

	struct ValidatorStateMutex {