0xfnzero
88 lines
3.3 KiB
Markdown
88 lines
3.3 KiB
Markdown
# Address Lookup Table Guide
|
|
|
|
This guide explains how to use Address Lookup Tables (ALT) in Sol Trade SDK to optimize transaction size and reduce fees.
|
|
|
|
## 📋 What are Address Lookup Tables?
|
|
|
|
Address Lookup Tables are a Solana feature that allows you to store frequently used addresses in a compact table format. Instead of including full 32-byte addresses in transactions, you can reference addresses by their index in the lookup table, significantly reducing transaction size and cost.
|
|
|
|
## 🚀 Core Benefits
|
|
|
|
- **Transaction Size Optimization**: Reduce transaction size by using address indices instead of full addresses
|
|
- **Cost Reduction**: Lower transaction fees due to reduced transaction size
|
|
- **Performance Improvement**: Faster transaction processing and validation
|
|
- **Network Efficiency**: Reduced bandwidth usage and block space consumption
|
|
|
|
## 🛠️ Implementation
|
|
|
|
Include lookup tables in your trade parameters:
|
|
|
|
```rust
|
|
let lookup_table_key = Pubkey::from_str("use_your_lookup_table_key_here").unwrap();
|
|
let alt = fetch_address_lookup_table_account(&client.rpc, &lookup_table_key).await?;
|
|
|
|
// Include lookup table in trade parameters
|
|
let buy_params = sol_trade_sdk::TradeBuyParams {
|
|
dex_type: DexType::PumpFun,
|
|
mint: mint_pubkey,
|
|
sol_amount: buy_sol_amount,
|
|
slippage_basis_points: Some(100),
|
|
recent_blockhash: Some(recent_blockhash),
|
|
extension_params: Box::new(PumpFunParams::from_trade(&trade_info, None)),
|
|
address_lookup_table_accounts: vec![alt], // One ALT
|
|
wait_transaction_confirmed: true,
|
|
create_wsol_ata: false,
|
|
close_wsol_ata: false,
|
|
create_mint_ata: true,
|
|
open_seed_optimize: false,
|
|
};
|
|
|
|
// Execute transaction
|
|
client.buy(buy_params).await?;
|
|
```
|
|
|
|
Multiple lookup tables are also supported:
|
|
|
|
```rust
|
|
let alt1 = fetch_address_lookup_table_account(&client.rpc, &lookup_table_key_1).await?;
|
|
let alt2 = fetch_address_lookup_table_account(&client.rpc, &lookup_table_key_2).await?;
|
|
|
|
let params = SimpleBuyParams::new(
|
|
DexType::PumpFun,
|
|
TradeTokenType::SOL,
|
|
mint_pubkey,
|
|
BuyAmount::ExactInput(buy_lamports),
|
|
extension_params,
|
|
recent_blockhash,
|
|
gas_fee_strategy,
|
|
)
|
|
.address_lookup_table_accounts(vec![alt1, alt2]);
|
|
```
|
|
|
|
Use the same `address_lookup_table_accounts` field for one or many ALTs: `vec![alt]` for a single ALT, `vec![alt1, alt2]` for multiple ALTs.
|
|
|
|
## 📊 Performance Comparison
|
|
|
|
| Aspect | Without ALT | With ALT | Improvement |
|
|
|--------|-------------|----------|-------------|
|
|
| **Transaction Size** | ~1,232 bytes | ~800 bytes | 35% reduction |
|
|
| **Address Storage** | 32 bytes per address | 1 byte per address | 97% reduction |
|
|
| **Transaction Fees** | Higher | Lower | Up to 30% savings |
|
|
| **Block Space Usage** | More | Less | Improved network efficiency |
|
|
|
|
## ⚠️ Important Notes
|
|
|
|
1. **Lookup Table Address**: Must provide a valid address lookup table address
|
|
3. **RPC Compatibility**: Ensure your RPC provider supports lookup tables
|
|
4. **Network Specific**: Lookup tables are network-specific (mainnet/devnet/testnet)
|
|
5. **Testing**: Always test on devnet before using on mainnet
|
|
|
|
## 🔗 Related Documentation
|
|
|
|
- [Trading Parameters Reference](TRADING_PARAMETERS.md)
|
|
- [Example: Address Lookup Table](../examples/address_lookup/)
|
|
|
|
## 📚 External Resources
|
|
|
|
- [Solana Address Lookup Tables Documentation](https://docs.solana.com/developing/lookup-tables)
|